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88 89<link rel="icon" href="/wp-content/uploads/2024/07/logoisska_Blanc_sanslettre_512x512.png" sizes="any"> 90<link rel="apple-touch-icon" href="/wp-content/uploads/2024/07/cropped-logoisska_Blanc_sanslettre_512x512.png"> 91 </head> 92 <body class="wp-singular page-template-default page page-id-1526 page-child parent-pageid-189 wp-embed-responsive wp-theme-yootheme translatepress-fr_FR"> 93 94 95 <div class="uk-hidden-visually uk-notification uk-notification-top-left uk-width-auto"> 96 <div class="uk-notification-message"> 97 <a href="#tm-main" class="uk-link-reset">Skip to main content</a> 98 </div> 99 </div> 100 101 102 103 <div class="tm-page"> 104 105 106 107 108<header class="tm-header-mobile uk-hidden@m"> 109 110 111 <div uk-sticky show-on-up animation="uk-animation-slide-top" cls-active="uk-navbar-sticky" sel-target=".uk-navbar-container"> 112 113 <div class="uk-navbar-container"> 114 115 <div class="uk-container uk-container-expand"> 116 <nav class="uk-navbar" uk-navbar="{"align":"left","container":".tm-header-mobile > [uk-sticky]","boundary":".tm-header-mobile .uk-navbar-container"}"> 117 118 <div class="uk-navbar-left "> 119 120 <a href="https://www.isska.ch/fr/" aria-label="Retourner à l'accueil" class="uk-logo uk-navbar-item"> 121 <picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/18/Transparant_detourage_blanc-18db9374.webp 180w" sizes="(min-width: 90px) 90px"><img src="/wp-content/uploads/yootheme/cache/dd/Transparant_detourage_blanc-dd7e86f9.png" width="90" height="71" alt="ISSKA - SISKA"></picture></a> 122 123 124 </div> 125 126 127 <div class="uk-navbar-right"> 128 129 130 131 132 <a class="uk-navbar-toggle" href="#search-container-8" uk-search-icon uk-toggle></a> 133 134 <div uk-modal id="search-container-8" class="uk-modal"> 135 <div class="uk-modal-dialog uk-modal-body"> 136 137 138 139 <form action="https://www.isska.ch/fr/" method="get" role="search" class="uk-search uk-width-1-1 uk-search-medium"><span uk-search-icon></span><input name="s" placeholder="Rechercher" required aria-label="Rechercher" type="search" class="uk-search-input" autofocus></form> 140 141 142 </div> 143 </div> 144 145<a uk-toggle href="#tm-dialog-mobile" class="uk-navbar-toggle" aria-controls="tm-dialog-mobile"> 146 147 148 <div uk-navbar-toggle-icon></div> 149 150 151 </a> 152 </div> 153 154 </nav> 155 </div> 156 157 </div> 158 159 </div> 160 161 162 163 164 165 166 <div id="tm-dialog-mobile" class="uk-dropbar uk-dropbar-top" uk-drop="{"flip":"false","container":".tm-header-mobile > [uk-sticky]","target-y":".tm-header-mobile .uk-navbar-container","mode":"click","target-x":".tm-header-mobile .uk-navbar-container","stretch":true,"pos":"bottom-left","bgScroll":"false","animation":"reveal-top","animateOut":true,"duration":300,"toggle":"false"}"> 167 168 <div class="tm-height-min-1-1 uk-flex uk-flex-column"> 169 170 171 <div class="uk-margin-auto-bottom uk-text-center"> 172 173<div class="uk-grid uk-child-width-1-1" uk-grid> <div> 174<div class="uk-panel"> 175 176 177 <ul class="uk-grid uk-flex-inline uk-flex-middle uk-flex-nowrap uk-grid-medium"> <li><a href="https://twitter.com/isska_siska" class="uk-preserve-width uk-icon-link" rel="noreferrer"><span uk-icon="icon: twitter;"></span></a></li> 178 <li><a href="https://ch.linkedin.com/company/isska-institut-suisse-de-speleologie-et-de-karstologie" class="uk-preserve-width uk-icon-link" rel="noreferrer"><span uk-icon="icon: linkedin;"></span></a></li> 179 <li><a href="https://www.instagram.com/isska_siska/" class="uk-preserve-width uk-icon-link" rel="noreferrer"><span uk-icon="icon: instagram;"></span></a></li> 180 <li><a href="https://www.youtube.com/@isska3345" class="uk-preserve-width uk-icon-link" rel="noreferrer"><span uk-icon="icon: youtube;"></span></a></li> 181 </ul> 182</div> 183</div> <div> 184<div class="uk-panel widget widget_nav_menu" id="nav_menu-5"> 185 186 187 188<ul class="uk-nav uk-nav-default uk-nav-accordion uk-nav-center" uk-nav="targets: > .js-accordion" uk-scrollspy-nav="closest: li; scroll: true;"> 189 190 <li class="menu-item menu-item-type-post_type menu-item-object-page menu-item-home"><a href="https://www.isska.ch/fr/">PAGE D'ACCUEIL</a></li> 191 <li class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children js-accordion uk-parent"><a href>QUI SOMMES-NOUS? <span uk-nav-parent-icon></span></a> 192 <ul class="uk-nav-sub"> 193 194 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/qui-sommes-nous">L'ISSKA</a></li> 195 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/qui-sommes-nous/#equipe">Ãquipe</a></li> 196 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/qui-sommes-nous/#rapports">Rapports annuels</a></li> 197 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/qui-sommes-nous/#histoire">Histoire</a></li> 198 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/qui-sommes-nous/#collaborations">Collaborations</a></li></ul></li> 199 <li class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children js-accordion uk-parent"><a href>COMPÃTENCES <span uk-nav-parent-icon></span></a> 200 <ul class="uk-nav-sub"> 201 202 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/competences/geoscience/">Géoscience</a></li> 203 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/competences/geocomputing">Géocomputing</a></li> 204 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/competences/patrimoine">Patrimoine</a></li> 205 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/competences/enseignement">Enseignement</a></li> 206 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/competences/archeozoologie">Archéozoologie</a></li></ul></li> 207 <li class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children js-accordion uk-parent"><a href>PRESTATIONS <span uk-nav-parent-icon></span></a> 208 <ul class="uk-nav-sub"> 209 210 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/prestations/services-et-analyses/">Services et analyses</a></li> 211 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/prestations/consulting/">Consulting</a></li> 212 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/prestations/developpement/">Développement</a></li> 213 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/prestations/enseignement/">Enseignement</a></li></ul></li> 214 <li class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children js-accordion uk-parent"><a href>PROJETS FNS <span uk-nav-parent-icon></span></a> 215 <ul class="uk-nav-sub"> 216 217 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/thermokarst/">ThermoKarst</a></li> 218 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/cave-seds/">CaveSeds</a></li></ul></li> 219 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/excursions/">EXCURSIONS</a></li> 220 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/formulaire-de-commande-3/">SHOP</a></li></ul> 221 222</div> 223</div></div> </div> 224 225 226 </div> 227 228 </div> 229 230 231</header> 232 233 234 235 236<header class="tm-header uk-visible@m"> 237 238 239 240 <div uk-sticky media="@m" cls-active="uk-navbar-sticky" sel-target=".uk-navbar-container"> 241 242 <div class="uk-navbar-container uk-navbar-primary"> 243 244 <div class="uk-container"> 245 <nav class="uk-navbar" uk-navbar="{"align":"left","container":".tm-header > [uk-sticky]","boundary":".tm-header .uk-navbar-container"}"> 246 247 <div class="uk-navbar-left "> 248 249 <a href="https://www.isska.ch/fr/" aria-label="Retourner à l'accueil" class="uk-logo uk-navbar-item"> 250 <picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/09/Transparant_detourage_blanc-0913e25d.webp 120w, /wp-content/uploads/yootheme/cache/e5/Transparant_detourage_blanc-e521f702.webp 240w" sizes="(min-width: 120px) 120px"><img src="/wp-content/uploads/yootheme/cache/5e/Transparant_detourage_blanc-5e74a784.png" width="120" height="95" alt="ISSKA - SISKA"></picture></a> 251 252 253 </div> 254 255 256 <div class="uk-navbar-right"> 257 258 259<div class="uk-navbar-item widget widget_search" id="search-8"> 260 261 262 263 264 <form action="https://www.isska.ch/fr/" method="get" role="search" class="uk-search uk-search-navbar"><span uk-search-icon></span><input name="s" placeholder="Rechercher" required aria-label="Rechercher" type="search" class="uk-search-input"></form> 265 266 267</div> 268<a uk-toggle href="#tm-dialog" aria-controls="tm-dialog" class="uk-navbar-toggle"> 269
270 <span class="uk-margin-xsmall-right uk-text-middle">Menu</span> 271 272 <div uk-navbar-toggle-icon></div> 273 274 275 </a> 276 277 </div> 278 279 </nav> 280 </div> 281 282 </div> 283 284 </div> 285 286 287 288 289 290 291 292 293 294 <div id="tm-dialog" class="uk-dropbar uk-dropbar-large uk-dropbar-top" uk-drop="{"flip":"false","container":".tm-header > [uk-sticky]","target-y":".tm-header .uk-navbar-container","mode":"click","target-x":".tm-header .uk-navbar-container","stretch":true,"pos":"bottom-left","bgScroll":"false","animateOut":true,"duration":300,"toggle":"false"}"> 295 296 <div class="tm-height-min-1-1 uk-flex uk-flex-column"> 297 298 299 <div class="uk-margin-auto-bottom tm-height-expand uk-text-center"> 300 301<div class="uk-grid uk-child-width-1-1" uk-grid> <div> 302<div class="uk-panel widget widget_nav_menu" id="nav_menu-15"> 303 304 305 306<ul class="uk-nav uk-nav-default uk-nav-accordion uk-nav-center" uk-nav="targets: > .js-accordion" uk-scrollspy-nav="closest: li; scroll: true;"> 307 308 <li class="menu-item menu-item-type-post_type menu-item-object-page menu-item-home"><a href="https://www.isska.ch/fr/">PAGE D'ACCUEIL</a></li> 309 <li class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children js-accordion uk-parent"><a href>QUI SOMMES-NOUS? <span uk-nav-parent-icon></span></a> 310 <ul class="uk-nav-sub"> 311 312 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/qui-sommes-nous">L'ISSKA</a></li> 313 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/qui-sommes-nous/#equipe">Ãquipe</a></li> 314 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/qui-sommes-nous/#rapports">Rapports annuels</a></li> 315 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/qui-sommes-nous/#histoire">Histoire</a></li> 316 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/qui-sommes-nous/#collaborations">Collaborations</a></li></ul></li> 317 <li class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children js-accordion uk-parent"><a href>COMPÃTENCES <span uk-nav-parent-icon></span></a> 318 <ul class="uk-nav-sub"> 319 320 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/competences/geoscience/">Géoscience</a></li> 321 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/competences/geocomputing">Géocomputing</a></li> 322 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/competences/patrimoine">Patrimoine</a></li> 323 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/competences/enseignement">Enseignement</a></li> 324 <li class="menu-item menu-item-type-custom menu-item-object-custom"><a href="https://www.isska.ch/competences/archeozoologie">Archéozoologie</a></li></ul></li> 325 <li class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children js-accordion uk-parent"><a href>PRESTATIONS <span uk-nav-parent-icon></span></a> 326 <ul class="uk-nav-sub"> 327 328 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/prestations/services-et-analyses/">Services et analyses</a></li> 329 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/prestations/consulting/">Consulting</a></li> 330 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/prestations/developpement/">Développement</a></li> 331 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/prestations/enseignement/">Enseignement</a></li></ul></li> 332 <li class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children js-accordion uk-parent"><a href>PROJETS FNS <span uk-nav-parent-icon></span></a> 333 <ul class="uk-nav-sub"> 334 335 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/thermokarst/">ThermoKarst</a></li> 336 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/cave-seds/">CaveSeds</a></li></ul></li> 337 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/excursions/">EXCURSIONS</a></li> 338 <li class="menu-item menu-item-type-post_type menu-item-object-page"><a href="https://www.isska.ch/fr/formulaire-de-commande-3/">SHOP</a></li></ul> 339 340</div> 341</div> <div> 342<div class="uk-panel"> 343 344
345 <ul class="uk-grid uk-flex-inline uk-flex-middle uk-flex-nowrap uk-grid-medium"> <li><a href="https://twitter.com/isska_siska" class="uk-preserve-width uk-icon-button" rel="noreferrer" target="_blank"><span uk-icon="icon: twitter;"></span></a></li> 346 <li><a href="https://www.instagram.com/isska_siska/" class="uk-preserve-width uk-icon-button" rel="noreferrer" target="_blank"><span uk-icon="icon: instagram;"></span></a></li> 347 <li><a href="https://ch.linkedin.com/company/isska-institut-suisse-de-speleologie-et-de-karstologie" class="uk-preserve-width uk-icon-button" rel="noreferrer" target="_blank"><span uk-icon="icon: linkedin;"></span></a></li> 348 <li><a href="https://www.youtube.com/@isska3345" class="uk-preserve-width uk-icon-button" rel="noreferrer" target="_blank"><span uk-icon="icon: youtube;"></span></a></li> 349 </ul> 350</div> 351</div></div> </div> 352 353 354 </div> 355 356 </div> 357 358 359 360</header> 361 362 363 364 <main id="tm-main"> 365 366 <!-- Builder #page --><style class="uk-margin-remove-adjacent">#page\#0 .el-content{font-family: "Century Gothic", Verdana, sans-serif;}@media (max-width:759px){#page\#0 .el-content{margin: 10px 50px; width: 250px; position: relative; top: 180px;}}@media (min-width:760px){#page\#0 .el-content{margin: 10px 6px; width: 217px; position: relative; top: 104px;}}@media (min-width:1200px){#page\#0 .el-content{width: 260px; margin: 0px 40px; position: relative; top: 165px;}}@media (min-width:1600px){#page\#0 .el-content{margin-top: 250px;}}@media (min-width:1600px) and (max-height:1100px){#page\#0 .el-content{margin-top: 130px;}}@media (max-width:759px){#page\#1{height: 370px;}}@media (min-width:760px){#page\#1{height: 275px;}}@media (min-width:1200px){#page\#1{height: 340px;}}@media (min-width:1600px){#page\#1{height: 580px;}}@media (min-width:1600px) and (max-height:1100px){#page\#1{height: 460px;}}@media (max-width: 759px){#page\#2{padding-top: 135px;}}@media (max-width: 759px) and (orientation:landscape){#page\#2{padding-top: 140px;}}#page\#2{font-family: 'Century Gothic', Verdana, sans-serif;}@media (max-width: 759px){#appliquee{padding-top: 135px;}}@media (max-width: 759px) and (orientation:landscape){#appliquee{padding-top: 140px;}}#appliquee{font-family: 'Century Gothic', Verdana, sans-serif;}#appliquee{margin-top: -100px;}#page\#3{text-align: justify; font-family: 'Century Gothic', Verdana, sans-serif;}#Fondamentale{margin-top: -50px;}</style> 367<div id="page#1" class="uk-section-default"> 368 <div class="uk-background-norepeat uk-background-cover uk-background-center-center uk-section uk-section-large" data-sources="[{"type":"image\/webp","srcset":"\/wp-content\/uploads\/yootheme\/cache\/5c\/CreteVaas_2023_RW_5-scaled-5c49f12f.webp 768w, https:\/\/www.isska.ch\/index.php?yootheme=cache\/1f\/CreteVaas_2023_RW_5-scaled-1f7fcf09.webp&src=wp-content\/uploads\/2024\/01\/CreteVaas_2023_RW_5-scaled.jpg&thumbnail=1024,362,&type=webp,85&hash=5578d45c 1024w, \/wp-content\/uploads\/yootheme\/cache\/e1\/CreteVaas_2023_RW_5-scaled-e1104953.webp 1366w, \/wp-content\/uploads\/yootheme\/cache\/e1\/CreteVaas_2023_RW_5-scaled-e1dac158.webp 1600w, \/wp-content\/uploads\/yootheme\/cache\/45\/CreteVaas_2023_RW_5-scaled-4555eb47.webp 1920w, \/wp-content\/uploads\/yootheme\/cache\/03\/CreteVaas_2023_RW_5-scaled-03cf3237.webp 2560w","sizes":"(max-aspect-ratio: 2560\/904) 283vh"}]" data-src="/wp-content/uploads/2024/01/CreteVaas_2023_RW_5-scaled.jpg" uk-img> 369 370 371 372 373 <div class="uk-container"> 374 375<div class="uk-grid-margin uk-grid tm-grid-expand uk-child-width-1-1"> 376 377 378<div class="uk-width-1-1"> 379 380 381 382 383 384 385 386<div id="page#0" class="uk-margin uk-text-center">
387 <div class="uk-flex-middle uk-grid-column-collapse uk-grid-row-small uk-child-width-auto uk-flex-center" uk-grid> 388 389 <div class="el-item"> 390 391 392<a class="el-content uk-button uk-button-primary" href="https://www.isska.ch/qui-sommes-nous"> 393 394 Qui sommes-nous ? 395 396</a> 397 398 399 </div> 400 401 402 <div class="el-item"> 403 404 405<a class="el-content uk-button uk-button-primary" href="https://www.isska.ch/competences/"> 406 407 ComÂpéÂtences 408 409</a> 410 411 412 </div> 413 414 415 <div class="el-item"> 416 417 418<a class="el-content uk-button uk-button-primary" href="https://www.isska.ch/prestations/"> 419 420 PresÂtaÂtions 421 422</a> 423 424 425 </div> 426 427 428 </div> 429</div> 430 431 432 433 434 435</div> 436 437</div> 438 </div> 439 440 441 </div> 442 443</div> 444<div id="page#2" class="uk-section-default uk-section"> 445 446 447 448 449 450 <div class="uk-container"> 451 452<div class="uk-grid-margin uk-grid tm-grid-expand uk-child-width-1-1"> 453 454 455<div class="uk-width-1-1"> 456 457 458 459 460 461 462 463 464<nav aria-label="Fil d'ariane" class="uk-visible@s"> 465 <ul class="uk-breadcrumb uk-margin-remove-bottom" vocab="https://schema.org/" typeof="BreadcrumbList"> 466 467 <li property="itemListElement" typeof="ListItem"> <a href="https://www.isska.ch/fr/" property="item" typeof="WebPage"><span property="name">Accueil</span></a> 468 <meta property="position" content="1"> 469 </li> 470 <li property="itemListElement" typeof="ListItem"> <a href="https://www.isska.ch/fr/competences/" property="item" typeof="WebPage"><span property="name">ComÂpéÂtences</span></a> 471 <meta property="position" content="2"> 472 </li> 473 <li property="itemListElement" typeof="ListItem"> <a href="https://www.isska.ch/fr/competences/geosciences/" property="item" typeof="WebPage"><span property="name">GéosÂciences</span></a> 474 <meta property="position" content="3"> 475 </li> 476 </ul> 477</nav> 478 479<h1> 480 481 482 Géosciences 483 484 485</h1><div class="uk-panel uk-margin"><p>LâISSKA mène une actiÂviÂté scienÂtiÂfique dans les difÂféÂrents domaines liés au karst : géoÂloÂgie, hydroÂgéoÂloÂgie, géoÂmorÂphoÂloÂgie, paléoÂcliÂmaÂtoÂloÂgie. 486Les connaisÂsances acquises et les comÂpéÂtences déveÂlopÂpées au sein de lâInstitut, depuis plus de vingt ans nous perÂmettent dâintervenir sur toutes les proÂbléÂmaÂtiques qui peuvent surÂveÂnir lors de la conduite de proÂjets en milieu karsÂtique.<br> 487LâISSKA porte et parÂtiÂcipe ausÂsi bien à des proÂjets très apliÂqués, liés par exemple au perÂceÂment de tunÂnels, quâà des proÂjets de recherche fonÂdaÂmenÂtale, notamÂment en accueillant et encaÂdrant des docÂtoÂrants et postÂdocÂtoÂrants. 488</p></div> 489 490 491 492 493</div> 494 495</div> 496 </div> 497 498 499 500</div> 501<div id="appliquee" class="uk-section-default uk-section"> 502 503 504 505 506 507 <div class="uk-container"> 508
509<div class="uk-grid-margin uk-grid tm-grid-expand" uk-grid id="ressource"> 510 511 512<div class="uk-width-3-4@m"> 513 514 515 516 517 518 519 520<h2> 521 522 523 Recherche appliquée 524 525 526</h2> 527<h3> 528 529 530 Ressources en eau 531 532 533</h3><div class="uk-panel uk-margin"><p>Les eaux souÂterÂraines repréÂsentent lâessentiel des resÂsources en eau en milieux calÂcaires. Ces resÂsources sont souÂvent de bonne quaÂliÂté et en quanÂtiÂté sufÂfiÂsante, mais la difÂfiÂculÂté reste leur accesÂsiÂbiÂliÂté. 534LocaÂliÂser et dimenÂsionÂner des ouvrages de proÂducÂtion dâeau en foncÂtion de lâadéquation entre besoins et resÂsources disÂpoÂnibles nécesÂsite une connaisÂsance préaÂlable du milieu et des invesÂtiÂgaÂtions spéÂciÂfiques. 535LâISSKA apporte des soluÂtions pour la recherche, lâexploitation, la gesÂtion et la proÂtecÂtion des eaux souÂterÂraines en milieu calÂcaire. 536</p></div> 537<h5> 538 539 540 Ressources 541 542 543</h5> 544<div class="uk-margin"> 545 546 547 548 549<a class="el-content uk-width-1-1 uk-button uk-button-primary uk-flex-inline uk-flex-center uk-flex-middle" href="https://www.bafu.admin.ch/dam/fr/sd-web/972UprvsWxTX/UW-2510-F_EPIK.pdf"> 550 <span class="uk-margin-xsmall-right" uk-icon="file-text"></span> 551 Méthode de carÂtoÂgraÂphie de la vulÂnéÂraÂbiÂliÂté 552 553</a> 554 555 556 557 558 559</div> 560 561<div class="uk-slider-container uk-margin uk-text-center" uk-slider> 562 <div class="uk-position-relative"> 563 564 <div class="uk-slider-items uk-grid"> <div class="uk-flex uk-flex-center"> 565<div class="el-item uk-flex uk-flex-column uk-inverse-light uk-inline-clip uk-transition-toggle" tabindex="0"> 566 567 568<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/e5/porrentruy-scaled-e5054695.webp 768w, /wp-content/uploads/yootheme/cache/ae/porrentruy-scaled-aec638a7.webp 1024w, /wp-content/uploads/yootheme/cache/4c/porrentruy-scaled-4c407b86.webp 1366w, /wp-content/uploads/yootheme/cache/65/porrentruy-scaled-65fab898.webp 1600w, /wp-content/uploads/yootheme/cache/bc/porrentruy-scaled-bc9b2776.webp 1920w, /wp-content/uploads/yootheme/cache/b7/porrentruy-scaled-b7efd8ad.webp 2560w" sizes="(min-width: 2560px) 2560px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/porrentruy-scaled.jpg" alt loading="lazy" width="2560" height="1703"></picture> 569 570 571 572 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 573 574 575 576<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Mesure de la conducÂtiÂviÂté de lâeau dans la grotte de Milandre (JU). © ISSKA</p></div> 577 578</div></div> 579 580</div></div> <div class="uk-flex uk-flex-center"> 581<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 582 583 584<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/90/121002_UGPS_Moulin_LCDF_0003-905e0cf6.webp 768w, /wp-content/uploads/yootheme/cache/b5/121002_UGPS_Moulin_LCDF_0003-b5ebc5ac.webp 1024w, /wp-content/uploads/yootheme/cache/74/121002_UGPS_Moulin_LCDF_0003-74ba1668.webp 1366w, /wp-content/uploads/yootheme/cache/67/121002_UGPS_Moulin_LCDF_0003-67cc9f0b.webp 1600w, /wp-content/uploads/yootheme/cache/68/121002_UGPS_Moulin_LCDF_0003-68cb3b82.webp 2000w" sizes="(min-width: 2000px) 2000px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/121002_UGPS_Moulin_LCDF_0003.JPG" alt loading="lazy" width="2000" height="1500"></picture> 585 586 587 588 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 589 590 591 592<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>LocaÂliÂsaÂtion et carÂtoÂgraÂphie des cours dâeau souÂterÂrains. © ISSKA</p></div> 593 594</div></div> 595 596</div></div> <div class="uk-flex uk-flex-center"> 597<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 598 599 600<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/c3/S19-7-c30d54ff.webp 768w, /wp-content/uploads/yootheme/cache/29/S19-7-296e75dd.webp 1024w, /wp-content/uploads/yootheme/cache/a7/S19-7-a7fdef8f.webp 1366w, /wp-content/uploads/yootheme/cache/c8/S19-7-c81aa7f1.webp 1600w, /wp-content/uploads/yootheme/cache/1e/S19-7-1e961fad.webp 2006w" sizes="(min-width: 2006px) 2006px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/S19-7.jpg" alt loading="lazy" width="2006" height="1333"></picture> 601 602 603 604 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 605 606 607 608<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Lac souÂterÂrain dans la grotte Crête de Vaas. © ISSKA</p></div> 609 610</div></div> 611 612</div></div> </div> 613 614 615 616 <div class="uk-visible@s uk-position-medium uk-position-center-left" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-previous uk-slider-item="previous"></a> </div> 617 <div class="uk-visible@s uk-position-medium uk-position-center-right" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-next uk-slider-item="next"></a> </div> 618 619 620 </div> 621 622<div class="uk-margin-top" uk-inverse> 623 <ul class="el-nav uk-slider-nav uk-dotnav uk-flex-center" uk-margin></ul> 624</div> 625</div> 626 627 628 629 630</div> 631<div class="uk-width-1-4@m uk-visible@m"> 632 633 634 635 636 637 638 639<div class="uk-card uk-card-default uk-margin-remove-first-child uk-margin uk-v
639isible@m"> 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 <div class="el-content uk-panel uk-margin-top"><h3 style="text-align: center;"><br>Contact</h3> 657<p style="text-align: center;"><img decoding="async" src="https://www.isska.ch/wp-content/uploads/2024/01/Pierre_Yves-1-scaled.jpg" alt width="191" height="255" class="alignnone wp-image-610"></p> 658<p style="text-align: center;">Pierre-Yves JeanÂnin <br><a href="mailto:[email protected]">Envoyer un eâmail</a></p><br></div> 659 660 661 662 663 664 665 666 667</div> 668 669 670 671 672</div> 673 674</div> 675<div class="uk-grid-margin uk-grid tm-grid-expand" uk-grid id="dangers"> 676 677 678<div class="uk-width-3-4@m"> 679 680 681 682 683 684 685 686<h3> 687 688 689 Dangers naturels 690 691 692</h3><div class="uk-panel uk-margin"><p>Le karst joue un rôle parÂtiÂcuÂlier dans la proÂbléÂmaÂtique des danÂgers natuÂrels. LâISSKA a déveÂlopÂpé des méthodes dâinÂvesÂtiÂgaÂtions pour lâéÂvaÂluaÂtion et la carÂtoÂgraÂphie des danÂgers natuÂrels suiÂvants :</p></div> 693<h5> 694 695 696 Danger dâeffondrements en milieu karstique 697 698 699</h5><div class="uk-panel uk-margin"><p>Dans les régions karsÂtiques, des effonÂdreÂments se proÂduisent réguÂlièÂreÂment. Lâétude de ces phéÂnoÂmènes par des cas concrets nous perÂmet de préÂdire les condiÂtions qui conduisent à ces évèÂneÂments. Des cartes de zonaÂtion des risques dâeffondrement peuvent donc être proÂduites.</p></div> 700<h5> 701 702 703 Ressources 704 705 706</h5> 707<div class="uk-margin"> 708 709 710 711 712<a class="el-content uk-width-1-1 uk-button uk-button-primary uk-flex-inline uk-flex-center uk-flex-middle" href="https://www.isska.ch/pdf/Fr/Competences/Fiche_explicative_effondrements_C1-2.pdf"> 713 <span class="uk-margin-xsmall-right" uk-icon="file-text"></span> 714 Fiche synÂthéÂtique « effonÂdreÂment de doline » 715 716</a> 717 718 719 720 721 722</div> 723 724<div class="uk-slider-container uk-margin uk-text-center" uk-slider> 725 <div class="uk-position-relative"> 726 727 <div class="uk-slider-items uk-grid"> <div class="uk-flex uk-flex-center"> 728<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 729 730 731<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/08/IMG_20230626_103142-scaled-086925bd.webp 768w, /wp-content/uploads/yootheme/cache/9b/IMG_20230626_103142-scaled-9b51cb1c.webp 1024w, /wp-content/uploads/yootheme/cache/b9/IMG_20230626_103142-scaled-b9952bb5.webp 1366w, /wp-content/uploads/yootheme/cache/de/IMG_20230626_103142-scaled-de2afacf.webp 1600w, /wp-content/uploads/yootheme/cache/a6/IMG_20230626_103142-scaled-a65cc7e0.webp 1800w" sizes="(min-width: 1800px) 1800px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/IMG_20230626_103142-scaled.jpg" alt loading="lazy" width="1800" height="1350"></picture> 732 733 734 735 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 736 737 738 739<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>EffonÂdreÂment en aval de la STEP de La Chaux-de-Fonds. © ISSKA</p></div> 740 741</div></div> 742 743</div></div> <div class="uk-flex uk-flex-center"> 744<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 745 746 747<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/99/CHA_0244-scaled-995e3398.webp 768w, /wp-content/uploads/yootheme/cache/56/CHA_0244-scaled-567a72e8.webp 1024w, /wp-content/uploads/yootheme/cache/08/CHA_0244-scaled-0826f0e0.webp 1366w, /wp-content/uploads/yootheme/cache/df/CHA_0244-scaled-df3263a4.webp 1600w, /wp-content/uploads/yootheme/cache/4f/CHA_0244-scaled-4f9a2876.webp 1920w, /wp-content/uploads/yootheme/cache/ee/CHA_0244-scaled-eed4b346.webp 2560w" sizes="(min-width: 2560px) 2560px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/CHA_0244-scaled.jpg" alt loading="lazy" width="2560" height="1714"></picture> 748 749 750 751 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 752 753 754 755<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Doline dâefÂfonÂdreÂment dans un patuÂrage jurasÂsien. © ISSKA</p></div> 756 757</div></div> 758 759</div></div> <div class="uk-flex uk-flex-center"> 760<div class="el-item uk-flex uk-flex-column uk-inverse-light uk-inline-clip uk-transition-toggle" tabindex="0"> 761 762 763<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/ff/Effondrmt-Templalle-83_17.4.07-040-rotated-fff254e3.webp 768w, /wp-content/uploads/yootheme/cache/a7/Effondrmt-Templalle-83_17.4.07-040-rotated-a7749339.webp 1024w, /wp-content/uploads/yootheme/cache/72/Effondrmt-Templalle-83_17.4.07-040-rotated-7233f008.webp 1366w, /wp-content/uploads/yootheme/cache/b4/Effondrmt-Templalle-83_17.4.07-040-rotated-b47ef69e.webp 1600w" sizes="(min-width: 1600px) 1600px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/Effondrmt-Templalle-83_17.4.07-040-rotated.jpg" alt loading="lazy" width="1600" height="1200"></picture> 764 765 766 767 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 768 769 770 771<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>EffonÂdreÂment en plein centre-ville de La Chaux-de-Fonds (NE). © ISSKA</p></div> 772 773</div></div> 774 775</div></div> </div> 776 777 778 779 <div class="uk-visible@s uk-position-medium uk-position-center-left" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-previous uk-slider-item="previous"></a> </div> 780 <div class="uk-visible@s uk-position-medium uk-position-center-right" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-next uk-slider-item="next"></a> </div> 781 782 783 </div> 784 785<div class="uk-margin-top" uk-inverse> 786 <ul class="el-nav uk-slider-nav uk-dotnav uk-flex-center" uk-margin></ul> 787</div> 788</div> 789<h5> 790 791 792 Danger de crues en milieu karstique 793 794 795</h5><div class="uk-panel uk-margin"><p>Dans le karst, les écouÂleÂments sont essenÂtielÂleÂment souÂterÂrains donc inviÂsibles. Il arrive cepenÂdant que la nappe souÂterÂraine atteigne la surÂface, inonde des endroits habiÂtuelÂleÂment secs, et proÂduise des augÂmenÂtaÂtions bruÂtales et conséÂquentes du débit des rivières. Grâce aux modèles déveÂlopÂpés par lâISSÂKA (KARSYS, KarstÂMOD), il est posÂsible de préÂvoir les inonÂdaÂtions, les débits des rivières et de proÂduire des cartes de danÂgers de crues, adapÂtées aux spéÂciÂfiÂciÂtés du karst.</p></div> 796<div class="uk-slider-container uk-margin uk-text-center" uk-slider> 797 <div class="uk-position-relative"> 798 799 <div class="uk-slider-items uk-grid"> <div class="uk-flex uk-flex-center"> 800<div class="el-item uk-flex uk-flex-column uk-inverse-light uk-inline-clip uk-transition-toggle" tabindex="0"> 801 802 803<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/df/COMP_GEOSCI_IMG_5373-scaled-dfa818e4.webp 768w, /wp-content/uploads/yootheme/cache/ac/COMP_GEOSCI_IMG_5373-scaled-ac09f71b.webp 1024w, /wp-content/uploads/yootheme/cache/fb/COMP_GEOSCI_IMG_5373-scaled-fbc3eba1.webp 1366w, /wp-content/uploads/yootheme/cache/52/COMP_GEOSCI_IMG_5373-scaled-52046b3f.webp 1600w, /wp-content/uploads/yootheme/cache/a4/COMP_GEOSCI_IMG_5373-scaled-a4633679.webp 2000w" sizes="(min-width: 2000px) 2000px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/04/COMP_GEOSCI_IMG_5373-scaled.JPG" alt loading="lazy" width="2000" height="1500"></picture> 804 805 806 807 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 808 809 810 811<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>MonÂtée du niveau de lâeau souÂterÂraine jusÂquâà la surÂface lors dâune crue à CheÂveÂnez (JU). © ISSKA</p></div> 812 813</div></div> 814 815</div></div> <div class="uk-flex uk-flex-center"> 816<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 817 818 819<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/81/IMG_5319-scaled-810d9df4.webp 768w, /wp-content/uploads/yootheme/cache/08/IMG_5319-scaled-08f939a6.webp 1024w, /wp-content/uploads/yootheme/cache/a1/IMG_5319-scaled-a140e9b1.webp 1366w, /wp-content/uploads/yootheme/cache/ad/IMG_5319-scaled-ad644fb1.webp 1600w, /wp-content/uploads/yootheme/cache/0f/IMG_5319-scaled-0f44328a.webp 2000w" sizes="(min-width: 2000px) 2000px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/IMG_5319-scaled.JPG" alt loading="lazy" width="2000" height="1500"></picture> 820 821 822 823 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 824 825 826 827<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>InonÂdaÂtion sur le cours de LâAlÂlaine (JU). © ISSKA</p></div> 828 829</div></div> 830 831</div></div> <div class="uk-flex uk-flex-center"> 832<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 833 834 835<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/90/D0284_110-28.3.2006-9087a52c.webp 768w, /wp-content/uploads/yootheme/cache/da/D0284_110-28.3.2006-da85122d.webp 1024w, /wp-content/uploads/yootheme/cache/02/D0284_110-28.3.2006-02840c3a.webp 1366w, /wp-content/uploads/yootheme/cache/ae/D0284_110-28.3.2006-ae0afee4.webp 1500w" sizes="(min-width: 1500px) 1500px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/D0284_110-28.3.2006.jpg" alt loading="lazy" width="1500" height="960"></picture> 836 837 838 839 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 840 841 842 843<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Grotte de la CasÂcade (Môtiers, NE) penÂdant la crue de 2006. ©ISSKA</p></div> 844 845</div></div> 846 847</div></div> <div class="uk-flex uk-flex-center"> 848<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 849 850 851<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/a9/carte_vulnerabilite_pour_site_web-a9c17325.webp 768w, /wp-content/uploads/yootheme/cache/44/carte_vulnerabilite_pour_site_web-4420453e.webp 1024w, /wp-content/uploads/yootheme/cache/2b/carte_vulnerabilite_pour_site_web-2b22cb9c.webp 1366w, /wp-content/uploads/yootheme/cache/12/carte_vulnerabilite_pour_site_web-123295c7.webp 1600w, /wp-content/uploads/yootheme/cache/81/carte_vulnerabilite_pour_site_web-81c07178.webp 1920w, /wp-content/uploads/yootheme/cache/15/carte_vulnerabilite_pour_site_web-156a2df0.webp 2201w" sizes="(min-width: 2201px) 2201px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/carte_vulnerabilite_pour_site_web.jpg" alt loading="lazy" width="2201" height="1602"></picture> 852 853 854 855 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 856 857 858 859<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Carte de la vulÂnéÂraÂbiÂliÂté du karst dans le canÂton du Saint-Gall. ©ISSKA</p></div> 860 861</div></div> 862 863</div></div> </div> 864 865 866 867 <div class="uk-visible@s uk-position-medium uk-position-center-left" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-previous uk-slider-item="previous"></a> </div> 868 <div class="uk-visible@s uk-position-medium uk-position-center-right" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-next uk-slider-item="next"></a> </div> 869 870 871 </div> 872 873<div class="uk-margin-top" uk-inverse> 874 <ul class="el-nav uk-slider-nav uk-dotnav uk-flex-center" uk-margin></ul> 875</div> 876</div> 877 878 879 880 881</div> 882<div class="uk-width-1-4@m"> 883 884 885 886 887 888 889 890 891 892 893 894</div> 895 896</div>
897<div class="uk-grid-margin uk-grid tm-grid-expand" uk-grid id="genie"> 898 899 900<div class="uk-width-3-4@m"> 901 902 903 904 905 906 907 908<h3> 909 910 911 Génie civil 912 913 914</h3><div class="uk-panel uk-margin"><p>LâISSKA accomÂpagne les proÂjets de génie civil en région karsÂtique et proÂpose des soluÂtions pour préÂveÂnir les proÂblèmes de staÂbiÂliÂté, de venues dâeau ou dâinÂfilÂtraÂtion des eaux grises.</p> 915<p>LâISSKA est fréÂquemÂment manÂdaÂté pour accomÂpaÂgner des proÂjets dâaménagement de surÂface (autoÂroutes, parcs éoliens) ou le perÂceÂment dâouvrages souÂterÂrains (tunÂnels, galeÂries, etc.). 916A traÂvers les actiÂviÂtés de recherche et déveÂlopÂpeÂment, lâISSKA a mis au point des méthodes perÂmetÂtant dâidentifier et de reméÂdier aux proÂblèmes que posent les construcÂtions en milieu karsÂtique. La méthode KarsÂtAÂLEA, fruit dâune colÂlaÂboÂraÂtion avec lâOffice FédéÂral des Routes (OFROU) est une illusÂtraÂtion des méthodes praÂtiques déveÂlopÂpées par lâinstitut. 917</p></div> 918<h5> 919 920 921 Ressources 922 923 924</h5> 925<div class="uk-margin">
926 <div class="uk-flex-middle uk-grid-small uk-child-width-1-1" uk-grid> 927 928 <div class="el-item"> 929 930 931<a class="el-content uk-width-1-1 uk-button uk-button-primary uk-flex-inline uk-flex-center uk-flex-middle" href="https://www.isska.ch/pdf/Fr/Competences/ISSKA_Brochure_KarstALEA_FR.pdf"> 932 <span class="uk-margin-xsmall-right" uk-icon="file-text"></span> 933 BroÂchure : Méthode KarsÂtAÂLEA 934 935</a> 936 937 938 </div> 939 940 941 <div class="el-item"> 942 943 944<a class="el-content uk-width-1-1 uk-button uk-button-primary uk-flex-inline uk-flex-center uk-flex-middle" href="https://www.isska.ch/pdf/De/Kompetenzen/KarstALEA.pdf"> 945 <span class="uk-margin-xsmall-right" uk-icon="file-text"></span> 946 Guide PraÂtique de la méthode KarsÂtAÂLEA 947 948</a> 949 950 951 </div> 952 953 954 </div> 955</div> 956 957<div class="uk-slider-container uk-margin uk-text-center" uk-slider> 958 <div class="uk-position-relative"> 959 960 <div class="uk-slider-items uk-grid"> <div class="uk-flex uk-flex-center"> 961<div class="el-item uk-flex uk-flex-column uk-inverse-light uk-inline-clip uk-transition-toggle" tabindex="0"> 962 963 964<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/74/COMP_GEOSCI_DSC_7823_v2-scaled-742651ab.webp 768w, /wp-content/uploads/yootheme/cache/8d/COMP_GEOSCI_DSC_7823_v2-scaled-8dfbe2d9.webp 1024w, /wp-content/uploads/yootheme/cache/83/COMP_GEOSCI_DSC_7823_v2-scaled-83550ce2.webp 1366w, /wp-content/uploads/yootheme/cache/b5/COMP_GEOSCI_DSC_7823_v2-scaled-b59f7ada.webp 1600w, /wp-content/uploads/yootheme/cache/fd/COMP_GEOSCI_DSC_7823_v2-scaled-fd9ea455.webp 1920w, /wp-content/uploads/yootheme/cache/d1/COMP_GEOSCI_DSC_7823_v2-scaled-d116e40e.webp 2560w" sizes="(min-width: 2560px) 2560px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/04/COMP_GEOSCI_DSC_7823_v2-scaled.jpg" alt loading="lazy" width="2560" height="1709"></picture> 965 966 967 968 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 969 970 971 972<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>DisÂpaÂriÂtion dâun cours dâeau dans une grotte à Bergün (GR). © ISSKA</p></div> 973 974</div></div> 975 976</div></div> <div class="uk-flex uk-flex-center"> 977<div class="el-item uk-flex uk-flex-column uk-inverse-light uk-inline-clip uk-transition-toggle" tabindex="0"> 978 979 980<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/06/IMG_2645-scaled-06434bea.webp 768w, /wp-content/uploads/yootheme/cache/57/IMG_2645-scaled-57e78884.webp 1024w, /wp-content/uploads/yootheme/cache/ec/IMG_2645-scaled-ec662499.webp 1366w, /wp-content/uploads/yootheme/cache/46/IMG_2645-scaled-46ca6024.webp 1600w, /wp-content/uploads/yootheme/cache/27/IMG_2645-scaled-27b1343f.webp 1920w, /wp-content/uploads/yootheme/cache/9b/IMG_2645-scaled-9b62c855.webp 2560w" sizes="(min-width: 2560px) 2560px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/IMG_2645-scaled.jpg" alt loading="lazy" width="2560" height="1920"></picture> 981 982 983 984 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 985 986 987 988<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>RepeÂrage dâanÂciens conduits karsÂtiques dans le « SteinÂbruch Born » (SO). © ISSKA</p></div> 989 990</div></div> 991 992</div></div> </div> 993 994 995 996 <div class="uk-visible@s uk-position-medium uk-position-center-left" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-previous uk-slider-item="previous"></a> </div> 997 <div class="uk-visible@s uk-position-medium uk-position-center-right" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-next uk-slider-item="next"></a> </div> 998 999 1000 </div> 1001 1002<div class="uk-margin-top" uk-inverse> 1003 <ul class="el-nav uk-slider-nav uk-dotnav uk-flex-center" uk-margin></ul> 1004</div> 1005</div> 1006 1007 1008 1009 1010</div> 1011<div class="uk-width-1-4@m"> 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023</div> 1024 1025</div>
1026<div class="uk-grid-margin uk-grid tm-grid-expand" uk-grid id="travaux"> 1027 1028 1029<div class="uk-width-3-4@m"> 1030 1031 1032 1033 1034 1035 1036 1037<h3> 1038 1039 1040 Travaux souterrains 1041 1042 1043</h3><div class="uk-panel uk-margin"><p>LâISSKA est spéÂciaÂliÂsé dans les traÂvaux de mesures et de docuÂmenÂtaÂtion en milieu souÂterÂrain.</p> 1044<p>LâISSKA interÂvient fréÂquemÂment pour lâétablissement de modèles souÂterÂrains perÂmetÂtant la comÂpréÂhenÂsion, lâaménagement et lâexploitation des aspects géoÂloÂgiques et hydroÂgéoÂloÂgiques souÂterÂrains. DifÂféÂrents outils peuvent être proÂpoÂsés pour la locaÂliÂsaÂtion, la topoÂgraÂphie ou lâacquisition 3D des vides souÂterÂrains. Les exemples dâapplication sont nomÂbreux :</p> 1045<ul> 1046<li>DimenÂsionÂneÂment dâaménagements souÂterÂrains : infraÂstrucÂtures touÂrisÂtiques, pose de conduites, etc. ou dâaménagements de surÂface en interÂacÂtion avec le sous-sol ;</li> 1047<li>PlaÂniÂfiÂcaÂtion pour la straÂtéÂgie dâexploitation de giseÂments souÂterÂrains (ex. mines de sel) ou pour lâévaluation des capaÂciÂtés de remÂblais ;</li> 1048<li>DocuÂmenÂtaÂtion des ouvrages souÂterÂrains hisÂtoÂriques, etc.</li> 1049</ul> 1050<p>LâISSKA posÂsède ausÂsi une grande expéÂrience en ce qui concerne lâinstrumentation de phéÂnoÂmènes en milieux souÂterÂrains, notamÂment dans le cadre de suiÂvi de la quaÂliÂté des eaux souÂterÂraines, de la quaÂliÂté de lâatmosphère souÂterÂraine ou des ébranÂleÂments lors de traÂvaux dâaménagement.</p></div> 1051<div class="uk-slider-container uk-margin uk-text-center" uk-slider> 1052 <div class="uk-position-relative"> 1053 1054 <div class="uk-slider-items uk-grid"> <div class="uk-flex uk-flex-center"> 1055<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 1056 1057 1058<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/3f/COMP_GEOSCI_IMG_7626-scaled-3fb4f1df.webp 768w, /wp-content/uploads/yootheme/cache/24/COMP_GEOSCI_IMG_7626-scaled-24051336.webp 1024w, /wp-content/uploads/yootheme/cache/01/COMP_GEOSCI_IMG_7626-scaled-012f4e97.webp 1366w, /wp-content/uploads/yootheme/cache/89/COMP_GEOSCI_IMG_7626-scaled-89bce3c4.webp 1600w, /wp-content/uploads/yootheme/cache/08/COMP_GEOSCI_IMG_7626-scaled-087d487d.webp 1920w, /wp-content/uploads/yootheme/cache/3b/COMP_GEOSCI_IMG_7626-scaled-3b839bf2.webp 2560w" sizes="(min-width: 2560px) 2560px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/04/COMP_GEOSCI_IMG_7626-scaled.jpg" alt loading="lazy" width="2560" height="1920"></picture> 1059 1060 1061 1062 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 1063 1064 1065 1066<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Essai de traÂçage dans un gouffre de La Chaux-de-Fonds (NE). © ISSKA</p></div> 1067 1068</div></div> 1069 1070</div></div> <div class="uk-flex uk-flex-center"> 1071<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 1072 1073 1074<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/40
1074/IMG_20240315_024511-scaled-404587e1.webp 768w, /wp-content/uploads/yootheme/cache/c5/IMG_20240315_024511-scaled-c5b68dc3.webp 1024w, /wp-content/uploads/yootheme/cache/16/IMG_20240315_024511-scaled-167f0d4f.webp 1366w, /wp-content/uploads/yootheme/cache/7d/IMG_20240315_024511-scaled-7d88f88a.webp 1600w, /wp-content/uploads/yootheme/cache/aa/IMG_20240315_024511-scaled-aa19f8fc.webp 1920w, /wp-content/uploads/yootheme/cache/c7/IMG_20240315_024511-scaled-c7c645a8.webp 2560w" sizes="(min-width: 2560px) 2560px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/IMG_20240315_024511-scaled.jpg" alt loading="lazy" width="2560" height="1920"></picture> 1075 1076 1077 1078 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 1079 1080 1081 1082<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Mesure 3D de la grotte TM800 (NE) par LiDAR. © ISSKA</p></div> 1083 1084</div></div> 1085 1086</div></div> <div class="uk-flex uk-flex-center"> 1087<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 1088 1089 1090<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/9b/TM800_VueDessus-9bb52310.webp 800w" sizes="(min-width: 800px) 800px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/TM800_VueDessus.jpg" alt loading="lazy" width="800" height="600"></picture> 1091 1092 1093 1094 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 1095 1096 1097 1098<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Modèle 3D de la grotte TM800 (NE) dans le tunÂnel de la Vue des Alpes. © ISSKA</p></div> 1099 1100</div></div> 1101 1102</div></div> <div class="uk-flex uk-flex-center"> 1103<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 1104 1105 1106<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/58/sieben_Nathan-scaled-58b06cd3.webp 768w, /wp-content/uploads/yootheme/cache/57/sieben_Nathan-scaled-570c5cfa.webp 1024w, /wp-content/uploads/yootheme/cache/03/sieben_Nathan-scaled-035e36c3.webp 1366w, /wp-content/uploads/yootheme/cache/79/sieben_Nathan-scaled-7966c9a8.webp 1600w, /wp-content/uploads/yootheme/cache/b1/sieben_Nathan-scaled-b16794e2.webp 1920w, /wp-content/uploads/yootheme/cache/14/sieben_Nathan-scaled-14898d27.webp 2560w" sizes="(min-width: 2560px) 2560px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/sieben_Nathan-scaled.jpg" alt loading="lazy" width="2560" height="1488"></picture> 1107 1108 1109 1110 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 1111 1112 1113 1114<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Vue 3D du réseau SieÂbenÂhengÂste-HohÂgant (BE). © ISSKA</p></div> 1115 1116</div></div> 1117 1118</div></div> </div> 1119 1120 1121 1122 <div class="uk-visible@s uk-position-medium uk-position-center-left" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-previous uk-slider-item="previous"></a> </div> 1123 <div class="uk-visible@s uk-position-medium uk-position-center-right" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-next uk-slider-item="next"></a> </div> 1124 1125 1126 </div> 1127 1128<div class="uk-margin-top" uk-inverse> 1129 <ul class="el-nav uk-slider-nav uk-dotnav uk-flex-center" uk-margin></ul> 1130</div> 1131</div> 1132 1133 1134 1135 1136</div> 1137<div class="uk-width-1-4@m"> 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149</div> 1150 1151</div>
1152<div class="uk-grid-margin uk-grid tm-grid-expand" uk-grid id="energies"> 1153 1154 1155<div class="uk-width-3-4@m"> 1156 1157 1158 1159 1160 1161 1162 1163<h3> 1164 1165 1166 Ãnergies renouvelables 1167 1168 1169</h3><div class="uk-panel uk-margin"><p>Les régions karsÂtique sont de plus en plus concerÂnées par lâaménagement dâinfrastructures pour la proÂducÂtion dâénergies renouÂveÂlables ; prinÂciÂpaÂleÂment hydroÂélecÂtrique, géoÂtherÂmique et éolienne. LâISSKA accomÂpagne les maitres dâouvrages dans les proÂjets de déveÂlopÂpeÂment des énerÂgies renouÂveÂlables dans ces régions. 1170</p></div> 1171<h5> 1172 1173 1174 Hydroélectricité souterraine 1175 1176 1177</h5><div class="uk-panel uk-margin"><p>Les eaux souÂterÂraines karsÂtiques repréÂsentent un cerÂtain potenÂtiel de proÂducÂtion dâélectricité. Cette exploiÂtaÂtion nâest touÂteÂfois pas sans risque pour le milieu et les risques doivent être évaÂlués par des spéÂciaÂlistes.<br> 1178LâISSKA, au traÂvers dâaccompagnements de proÂjets ou dâétudes dâimpact est actif dans ce domaine. Nous sommes à même de poser un diagÂnosÂtic au niveau de lâavant-projet pour voir si celui-ci a des chances dâaboutir et quelles adapÂtaÂtions seraient nécesÂsaires pour être en accord avec difÂféÂrentes légisÂlaÂtions et insÂtrucÂtions praÂtiques liées aux proÂjets dans le karst.</p></div> 1179<h5> 1180 1181 1182 Eoliennes 1183 1184 1185</h5><div class="uk-panel uk-margin"><p>Lâimplantation dâéoliennes en milieux karsÂtiques doit faire lâobjet dâun accomÂpaÂgneÂment spéÂciÂfique sur le plan des impacts pour lâenvironnement et réciÂproÂqueÂment des risques de staÂbiÂliÂté pour lâouvrage.</p></div> 1186<div class="uk-margin uk-text-center"> 1187 1188 1189 1190 1191<a class="el-content uk-width-1-1 uk-button uk-button-primary uk-flex-inline uk-flex-center uk-flex-middle" href="https://www.isska.ch/pdf/brochure_eoliennes_f.pdf" target="_blank"> 1192 <span class="uk-margin-xsmall-right" uk-icon="file-text"></span> 1193 éoliennes en région karsÂtique 1194 1195</a> 1196 1197 1198 1199 1200 1201</div> 1202 1203<h5> 1204 1205 1206 Géothermie 1207 1208 1209</h5><div class="uk-panel uk-margin"><p>Les mécaÂnismes de proÂpaÂgaÂtion de chaÂleur dans le sous-sol karsÂtique sont très difÂféÂrents des autres enviÂronÂneÂments géoÂloÂgiques. Les proÂjets dâexploitation nécesÂsitent souÂvent une adapÂtaÂtion et un accomÂpaÂgneÂment spéÂciaÂliÂsé. LâISSKA posÂsède des outils et de lâexpérience dans ce cadre, et colÂlaÂbore avec le Centre dâhydrogéologie et de géoÂtherÂmie de lâUniversité de NeuÂchâÂtel qui est un centre de comÂpéÂtence reconÂnu.</p></div> 1210 1211 1212 1213 1214</div> 1215<div class="uk-width-1-4@m"> 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227</div> 1228 1229</div> 1230 </div> 1231 1232 1233 1234</div> 1235<div id="Fondamentale" class="uk-section-default uk-section"> 1236 1237 1238 1239 1240 1241 <div class="uk-container"> 1242
1243<div class="uk-grid-margin uk-grid tm-grid-expand" uk-grid id="speleogenese"> 1244 1245 1246<div class="uk-width-3-4@m"> 1247 1248 1249 1250 1251 1252 1253 1254<h2> 1255 1256 1257 Recherche fondamentale 1258 1259 1260</h2> 1261<h3> 1262 1263 1264 Spéléogenèse 1265 1266 1267</h3><div class="uk-panel uk-margin"><p>Les grottes et le payÂsage karsÂtique résultent de la disÂsoÂluÂtion des calÂcaires dans les eaux de pluie. Dans cerÂtains cas, la disÂsoÂluÂtion peut résulÂter dâautres causes (p.ex. des remonÂtées de gaz proÂfonds). ComÂprendre comÂment se forment les grottes préÂsente un intéÂrêt évident pour le spéÂléoÂlogue qui les explore. CepenÂdant, la préÂviÂsion de la préÂsence dâun vide souÂterÂrain constiÂtue ausÂsi une inforÂmaÂtion imporÂtante pour un ingéÂnieur qui doit construire un tunÂnel ou pour un hydroÂgéoÂlogue qui doit capÂter de lâeau.</p> 1268<p>PluÂsieurs modèles numéÂriques de spéÂléoÂgeÂnèse ont été déveÂlopÂpés au cours des 35 derÂnières années. Ils nous ont appris énorÂméÂment de choses sur les prinÂcipes, les vitesses de forÂmaÂtion et les grandes lignes de la géoÂméÂtrie des réseaux de galeÂries souÂterÂraines. CepenÂdant, la caracÂtéÂriÂsaÂtion des paraÂmètres de terÂrain, perÂmetÂtant dâaÂliÂmenÂter ces modèles, est comÂpaÂraÂtiÂveÂment relaÂtiÂveÂment en retard. LâISSKA contriÂbue donc par ses recherches à fourÂnir des donÂnées de terÂrain, à les repréÂsenÂter et à les confronÂter aux résulÂtats des modèles de simuÂlaÂtion.</p> 1269<p>Les strucÂtures karsÂtiques ne se déveÂloppent claiÂreÂment pas de manière aléaÂtoire. Nous en avons cerÂné les caracÂtéÂrisÂtiques généÂrales, et pouÂvons esquisÂser les zones potenÂtielÂleÂment les plus karsÂtiÂfiées. TouÂteÂfois, pour généÂrer des réseaux réaÂlistes, il reste du traÂvail pour les généÂraÂtions futuresâ¦</p> 1270<p>Nos traÂvaux concernent surÂtout :</p> 1271<ul> 1272<li>La disÂtriÂbuÂtion spaÂtiale des conduits karsÂtiques (concept dâhoÂriÂzons dâinÂcepÂtion)</li> 1273<li>La genèse des réseaux karsÂtiques dans la zone épiÂphréaÂtique (loops)</li> 1274<li>LâéÂtaÂgeÂment des réseaux karsÂtiques (phases spéÂléoÂgéÂnéÂtiques)</li> 1275</ul> 1276<p>ActuelÂleÂment ils se concentrent surÂtout sur la préÂviÂsion de la posiÂtion (proÂbaÂbiÂliste) des conduits et sur leur caracÂtéÂriÂsaÂtion (taille, forme, remÂplisÂsage, eau, etc.).</p></div> 1277 1278 1279 1280 1281</div> 1282<div class="uk-width-1-4@m"> 1283 1284 1285 1286 1287 1288 1289 1290<div class="uk-card uk-card-default uk-margin-remove-first-child uk-margin" id="page#3"> 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 <div class="el-content uk-panel uk-margin-top"><h3 style="text-align: center;"><br>Contact</h3> 1308<p><img fetchpriority="high" decoding="async" src="https://www.isska.ch/wp-content/uploads/2024/01/Marc_nb-225x300.jpg" alt width="225" height="300" class="wp-image-615 size-medium aligncenter" srcset="https://www.isska.ch/wp-content/uploads/2024/01/Marc_nb-225x300.jpg 225w, https://www.isska.ch/wp-content/uploads/2024/01/Marc_nb-768x1024.jpg 768w, https://www.isska.ch/wp-content/uploads/2024/01/Marc_nb-1152x1536.jpg 1152w, https://www.isska.ch/wp-content/uploads/2024/01/Marc_nb-1536x2048.jpg 1536w, https://www.isska.ch/wp-content/uploads/2024/01/Marc_nb-scaled.jpg 1920w" sizes="(max-width: 225px) 100vw, 225px"></p> 1309<p style="text-align: center;">Marc LütÂscher <br><a href="mailto:[email protected]">Envoyer eâmail</a></p> 1310<p></p></div> 1311 1312 1313 1314 1315 1316 1317 1318 1319</div> 1320 1321 1322 1323 1324</div> 1325 1326</div>
1327<div class="uk-grid-margin uk-grid tm-grid-expand" uk-grid id="climat"> 1328 1329 1330<div class="uk-width-3-4@m"> 1331 1332 1333 1334 1335 1336 1337 1338<h3> 1339 1340 1341 Climat souterrain 1342 1343 1344</h3><div class="uk-panel uk-margin"><p>Sujet de preÂmier abord très acaÂdéÂmique, la comÂpréÂhenÂsion fine du cliÂmat souÂterÂrain est imporÂtante pour la gesÂtion des grottes archéoÂloÂgiques, ornées, touÂrisÂtiques ou même pour cerÂtains traÂvaux spéÂléoÂloÂgiques. Elle est ausÂsi imporÂtante pour comÂprendre la therÂmique des masÂsifs karsÂtiques et par là lâimÂplanÂtaÂtion de sondes géoÂtherÂmiques ou pour expliÂquer la préÂsence dâune glaÂcière natuÂrelle. Enfin, elle est nécesÂsaire pour interÂpréÂter les variaÂtions obserÂvées dans la croisÂsance des staÂlagÂmites et proÂduire des reconsÂtiÂtuÂtions paléoÂcliÂmaÂtiques.</p> 1345<p>ProÂjets actuels :</p> 1346<ul> 1347<li><span><a href="https://www.isska.ch/cave-seds/" data-wplink-url-error="true" target="_blank" rel="noopener">CaveÂSeds</a></span></li> 1348<li><span>AnaÂlyse des interÂacÂtions entre venÂtiÂlaÂtion, teneur en CO2 et chiÂmie des eaux dans la grotte de Milandre</span></li> 1349<li><span>SuiÂvi à long terme de quelques glaÂcières natuÂrelles du Jura</span></li> 1350</ul> 1351<p>ProÂjets pasÂsés :</p> 1352<ul> 1353<li><span><a href="https://www.isska.ch/thermokarst/" data-wplink-url-error="true" target="_blank" rel="noopener">TherÂmoÂkarst</a></span></li> 1354<li><span>Etude des glaÂcières natuÂrelles du Jura</span></li> 1355<li><span>AnaÂlyse du cliÂmat de la grotte de LasÂcaux</span></li> 1356<li><span>Etude de la therÂmique des masÂsifs karsÂtiques</span></li> 1357<li><span>EvaÂluaÂtion du potenÂtiel therÂmique des masÂsifs karsÂtiques</span></li> 1358<li><span>Essai de venÂtiÂlaÂtion artiÂfiÂcielle dâune caviÂté karsÂtique (Milandre)</span></li> 1359</ul></div> 1360 1361 1362 1363 1364</div> 1365<div class="uk-width-1-4@m"> 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377</div> 1378 1379</div>
1380<div class="uk-grid-margin uk-grid tm-grid-expand" uk-grid id="paleoclimats"> 1381 1382 1383<div class="uk-width-3-4@m"> 1384 1385 1386 1387 1388 1389 1390 1391<h3> 1392 1393 1394 Enregistrements karstiques 1395 1396 1397</h3><div class="uk-panel uk-margin"><p>IsoÂlées des proÂcesÂsus dâérosion extéÂrieurs, les grottes préÂservent des séquences sédiÂmenÂtaires sur des cenÂtaines de milÂliers, voire milÂlions dâannées. Lâétude de ces dépôts, quâil sâagisse de sédiÂments détriÂtiques (i.e. lamiÂnites, galets) ou de spéÂléoÂthèmes (i.e staÂlagÂmites), apporte une inforÂmaÂtion préÂcieuse sur les chanÂgeÂments cliÂmaÂtiques et enviÂronÂneÂmenÂtaux au cours du temps. Quâil sâagisse de cycles glaÂciaires ou de flucÂtuaÂtions saiÂsonÂnières les sédiÂments des grottes renÂferment une inforÂmaÂtion préÂcieuse sur notre enviÂronÂneÂment pasÂsé. <br>Outre la dataÂtion de ces sédiÂments, les études de lâISSKA portent sur leur signaÂture minéÂraÂloÂgique (calÂcite, araÂgoÂnite, quartz, â¦), géoÂchiÂmique (Mg, Sr, Ba, S, â¦) et isoÂtoÂpique (d18O, d13C,â¦) mais égaÂleÂment leur conteÂnu fauÂnisÂtique (micro-inverÂtérÂbrés, osseÂments) et botaÂnique (polÂlens).</p> 1398<p>Voir égaÂleÂment notre comÂpéÂtence <a href="https://www.isska.ch/fr/competences/archeozoologie/" rel="noopener">en archéoÂzooÂloÂgie</a>.</p></div> 1399<div class="uk-slider-container uk-margin uk-text-center" uk-slider> 1400 <div class="uk-position-relative"> 1401 1402 <div class="uk-slider-items uk-grid"> <div class="uk-flex uk-flex-center"> 1403<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 1404 1405 1406<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/63/S17-9-scaled-1-633524eb.webp 768w, /wp-content/uploads/yootheme/cache/cc/S17-9-scaled-1-ccd47be0.webp 1024w, /wp-content/uploads/yootheme/cache/26/S17-9-scaled-1-26c07b06.webp 1366w, /wp-content/uploads/yootheme/cache/81/S17-9-scaled-1-814cb11c.webp 1600w, /wp-content/uploads/yootheme/cache/50/S17-9-scaled-1-50afec28.webp 1702w" sizes="(min-width: 1702px) 1702px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/S17-9-scaled-1.jpg" alt loading="lazy" width="1702" height="1276"></picture> 1407 1408 1409 1410 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 1411 1412 1413 1414<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>StaÂlagÂmite couÂpée en vue dâaÂnaÂlyses. © ISSKA</p></div> 1415 1416</div></div> 1417 1418</div></div> <div class="uk-flex uk-flex-center"> 1419<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 1420 1421 1422<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/90/PA030052-scaled-90668d07.webp 768w, /wp-content/uploads/yootheme/cache/82/PA030052-scaled-82be399e.webp 1024w, /wp-content/uploads/yootheme/cache/7d/PA030052-scaled-7dae70db.webp 1366w, /wp-content/uploads/yootheme/cache/1d/PA030052-scaled-1d5c0077.webp 1600w, /wp-content/uploads/yootheme/cache/26/PA030052-scaled-26682ff9.webp 1920w, /wp-content/uploads/yootheme/cache/b9/PA030052-scaled-b9906e69.webp 2560w" sizes="(min-width: 2560px) 2560px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/PA030052-scaled.jpg" alt loading="lazy" width="2560" height="1920"></picture> 1423 1424 1425 1426 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 1427 1428 1429 1430<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Les calÂcites cryoÂgéÂniques se forment lors de la congéÂlaÂt
1430ion de lâeau du karst. Elles témoignent à la fois de temÂpéÂraÂtures inféÂrieures à 0°C et de la préÂsence dâeau liquide dans une caviÂté. Leur étude perÂmet de reconsÂtruire lâéÂvoÂluÂtion du perÂmaÂfrost au cours du temps. © ISSKA</p></div> 1431 1432</div></div> 1433 1434</div></div> <div class="uk-flex uk-flex-center"> 1435<div class="el-item uk-flex uk-flex-column uk-inline-clip uk-transition-toggle" tabindex="0"> 1436 1437 1438<picture><source type="image/webp" srcset="/wp-content/uploads/yootheme/cache/d4/20240521_205132-scaled-scaled-d444e355.webp 768w, /wp-content/uploads/yootheme/cache/38/20240521_205132-scaled-scaled-381af2a6.webp 1024w, /wp-content/uploads/yootheme/cache/91/20240521_205132-scaled-scaled-9115e740.webp 1366w, /wp-content/uploads/yootheme/cache/c7/20240521_205132-scaled-scaled-c73964b5.webp 1500w" sizes="(min-width: 1500px) 1500px"><img decoding="async" class="el-image uk-transition-opaque uk-flex-1" src="/wp-content/uploads/2024/05/20240521_205132-scaled-scaled.jpg" alt loading="lazy" width="1500" height="1125"></picture> 1439 1440 1441 1442 <div class="uk-position-bottom uk-transition-fade uk-overlay-default"><div class="uk-overlay uk-padding-small uk-margin-remove-first-child"> 1443 1444 1445 1446<div class="el-content uk-panel uk-text-small uk-margin-small-top"><p>Les séquences détriÂtiques obserÂvées dans les grottes informent sur les chanÂgeÂments enviÂronÂneÂmenÂtaux pasÂsés et peuvent être datées par des méthodes isoÂtoÂpiques. © ISSKA</p></div> 1447 1448</div></div> 1449 1450</div></div> </div> 1451 1452 1453 1454 <div class="uk-visible@s uk-position-medium uk-position-center-left" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-previous uk-slider-item="previous"></a> </div> 1455 <div class="uk-visible@s uk-position-medium uk-position-center-right" uk-inverse> <a class="el-slidenav" href="#" uk-slidenav-next uk-slider-item="next"></a> </div> 1456 1457 1458 </div> 1459 1460<div class="uk-margin-top" uk-inverse> 1461 <ul class="el-nav uk-slider-nav uk-dotnav uk-flex-center" uk-margin></ul> 1462</div> 1463</div> 1464 1465 1466 1467 1468</div> 1469<div class="uk-width-1-4@m"> 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481</div> 1482 1483</div>
1484<div class="uk-grid-margin uk-grid tm-grid-expand" uk-grid id="changement"> 1485 1486 1487<div class="uk-width-3-4@m"> 1488 1489 1490 1491 1492 1493 1494 1495<h3> 1496 1497 1498 Changement climatique et karst 1499 1500 1501</h3><div class="uk-panel uk-margin"><p><span>Les condiÂtions cliÂmaÂtiques exercent de nomÂbreuses influences sur le karst. ParÂmi celles-ci lâISSÂKA évaÂlue prinÂciÂpaÂleÂment lâefÂfet du chanÂgeÂment cliÂmaÂtique sur les éléÂments suiÂvants.</span></p> 1502<ul> 1503<li><span>LâinÂfilÂtraÂtion dâeau dans le sous-sol ou recharge des aquiÂfères. Elle Influence direcÂteÂment la quanÂtiÂté dâeau souÂterÂraine disÂpoÂnible. Elle résulte dâun équiÂlibre déliÂcat entre facÂteurs cliÂmaÂtiques (préÂciÂpiÂtaÂtions, temÂpéÂraÂtureâ¦) et bioÂpéÂdoÂloÂgiques (végéÂtaÂtion et sols).</span></li> 1504<li><span>La préÂciÂpiÂtaÂtion de calÂcite dans les staÂlagÂmites concerne surÂtout la reconsÂtiÂtuÂtion paléoÂcliÂmaÂtique. Les couches de calÂcite dépoÂsées dans les staÂlagÂmites enreÂgistrent les condiÂtions cliÂmaÂtiques régnant au moment de leur dépôt, de manière anaÂlogue aux anneaux du tronc dâun arbre.</span></li> 1505<li><span>La disÂsoÂluÂtion du calÂcaire joue un rôle dans le ralenÂtisÂseÂment du réchaufÂfeÂment cliÂmaÂtique. En effet, il est démonÂtré que le réchaufÂfeÂment cliÂmaÂtique accenÂtue lâacÂtiÂviÂté bioÂloÂgique des sols, induiÂsant une augÂmenÂtaÂtion de la teneur en CO2 du sol. Lâeau qui sâinÂfiltre dans le sol disÂsout par conséÂquent plus de CO2, ce qui lui perÂmet ensuite de disÂsoudre plus de calÂcaire. Il en résulte que pour chaque moléÂcule supÂpléÂmenÂtaire de calÂcaire disÂsous, une moléÂcule a été préÂleÂvée dans le sol, donc dans lâatÂmoÂsphère terÂrestre. Ce préÂlèÂveÂment de CO2 pourÂrait expliÂquer une parÂtie imporÂtante de ce que les spéÂciaÂlistes nomment le « carÂbon sink », câest-à -dire le fait que le CO2 atmoÂsphéÂrique augÂmente moins vite que les estiÂmaÂtions des modèles.</span></li> 1506</ul></div> 1507 1508 1509 1510 1511</div> 1512<div class="uk-width-1-4@m"> 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524</div> 1525 1526</div> 1527 </div> 1528 1529 1530 1531</div> 1532 </main> 1533 1534 1535 <footer> 1536 <!-- Builder #footer --> 1537<div class="uk-section-default uk-section"> 1538 1539 1540 1541 1542 1543 <div class="uk-container"> 1544 1545<div class="uk-grid-margin uk-grid tm-grid-expand uk-child-width-1-1"> 1546 1547 1548<div class="uk-width-1-1"> 1549 1550 1551 1552 1553 1554 1555 <hr class="uk-divider-small uk-text-left uk-position-relative uk-margin-remove-vertical" style="bottom: -50px;"> 1556 1557 1558 1559 1560</div> 1561 1562</div> 1563 </div> 1564 1565 1566 1567</div> 1568<div class="uk-section-default uk-section"> 1569 1570 1571 1572 1573 1574 <div class="uk-container"> 1575 1576<div class="uk-grid-margin uk-grid tm-grid-expand uk-grid-column-large" uk-grid> 1577 1578 1579<div class="uk-width-1-3@m"> 1580 1581 1582 1583 1584 1585 1586 <div class="uk-panel uk-margin"><p>Institut Suisse de Spéléologie et Karstologie<br /><a href="https://www.google.com/maps/place/Rue+de+la+Serre+68,+2300+La+Chaux-de-Fonds">Rue de la Serre 68</a><br /><a href="https://www.google.com/maps/place/Rue+de+la+Serre+68,+2300+La+Chaux-de-Fonds">2301 La Chaux-de-Fonds</a><br /><a href="https://www.google.com/maps/place/Rue+de+la+Serre+68,+2300+La+Chaux-de-Fonds">Suisse</a></p></div> 1587 1588 1589 1590 1591</div> 1592<div class="uk-width-1-3@m"> 1593 1594 1595 1596 1597 1598 1599 1600<div class="uk-margin"> <ul class="uk-child-width-auto uk-flex-inline uk-flex-middle" uk-grid> 1601 <li class="el-item"> 1602<a class="el-link uk-icon-link" href="https://ch.linkedin.com/company/isska-institut-suisse-de-speleologie-et-de-karstologie" target="_blank"><span uk-icon="icon: linkedin; width: 30; height: 30;"></span></a></li> 1603 <li class="el-item"> 1604<a class="el-link uk-icon-link" href="https://www.instagram.com/isska_siska/" target="_blank"><span uk-icon="icon: instagram; width: 30; height: 30;"></span></a></li> 1605 <li class="el-item"> 1606<a class="el-link uk-icon-link" href="https://www.youtube.com/@isska3345" target="_blank"><span uk-icon="icon: youtube; width: 30; height: 30;"></span></a></li> 1607 1608 </ul></div> 1609 1610 1611 1612 1613</div> 1614<div class="uk-width-1-3@m"> 1615 1616 1617 1618 1619 1620 1621 <div class="uk-panel uk-margin"><p style="text-align: left;">Contact:<br /> 1622 E-mail: <a href="mailto:[email protected]">[email protected]</a><br /> 1623 Tel: <a href="tel:+41329133533">+41 (0) 32 913 35 33</a> 1624</p></div> 1625 1626 1627 1628 1629</div> 1630 1631</div> 1632 </div> 1633 1634 1635 1636</div> </footer> 1637 1638 </div> 1639 1640 1641
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1723<script type="module"> 1724/*! This file is auto-generated */ 1725var e="script#wp-emoji-settings",t=document.querySelector(e);if(!(t instanceof HTMLScriptElement))throw new Error("Element missing: "+e);const r=JSON.parse(t.text),s=(window._wpemojiSettings=r,"wpEmojiSettingsSupports"),o=["flag","emoji"];function i(e){try{var t={supportTests:e,timestamp:(new Date).valueOf()};sessionStorage.setItem(s,JSON.stringify(t))}catch(e){}}function c(e,t,n){e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillText(t,0,0);t=new Uint32Array(e.getImageData(0,0,e.canvas.width,e.canvas.height).data);e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillText(n,0,0);const r=new Uint32Array(e.getImageData(0,0,e.canvas.width,e.canvas.height).data);return t.every((e,t)=>e===r[t])}function p(e,t){e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillText(t,0,0);var n=e.getImageData(16,16,1,1);for(let e=0;e<n.data.length;e++)if(0!==n.data[e])return!1;return!0}function u(e,t,n,r){switch(t){case"flag":return n(e,"\ud83c\udff3\ufe0f\u200d\u26a7\ufe0f","\ud83c\udff3\ufe0f\u200b\u26a7\ufe0f")?!1:!n(e,"\ud83c\udde8\ud83c\uddf6","\ud83c\udde8\u200b\ud83c\uddf6")&&!n(e,"\ud83c\udff4\udb40\udc67\udb40\udc62\udb40\udc65\udb40\udc6e\udb40\udc67\udb40\udc7f","\ud83c\udff4\u200b\udb40\udc67\u200b\udb40\udc62\u200b\udb40\udc65\u200b\udb40\udc6e\u200b\udb40\udc67\u200b\udb40\udc7f");case"emoji":return!r(e,"\ud83e\u1fac8")}return!1}function f(e,t,n,r){let a;const s=(a="undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope?new OffscreenCanvas(300,150):document.createElement("canvas")).getContext("2d",{willReadFrequently:!0}),o=(s.textBaseline="top",s.font="600 32px Arial",{});return e.forEach(e=>{o[e]=t(s,e,n,r)}),o}function a(e){var t=document.createElement("script");t.src=e,t.defer=!0,document.head.appendChild(t)}r.supports={everything:!0,everythingExceptFlag:!0},new Promise(t=>{let n=function(){try{var e=JSON.parse(sessionStorage.getItem(s));if("object"==typeof e&&"number"==typeof e.timestamp&&(new Date).valueOf()<e.timestamp+604800&&"object"==typeof e.supportTests)return e.supportTests}catch(e){}return null}();if(!n){if("undefined"!=typeof Worker&&"undefined"!=typeof OffscreenCanvas&&"undefined"!=typeof URL&&URL.createObjectURL&&"undefined"!=typeof Blob)try{var e="postMessage("+f.toString()+"("+[JSON.stringify(o),u.toString(),c.toString(),p.toString()].join(",")+"));",r=new Blob([e],{type:"text/javascript"});const a=new Worker(URL.createObjectURL(r),{name:"wpTestEmojiSupports"});return void(a.onmessage=e=>{i(n=e.data),a.terminate(),t(n)})}catch(e){}i(n=f(o,u,c,p))}t(n)}).then(e=>{for(const n in e)r.supports[n]=e[n],r.supports.everything=r.supports.everything&&r.supports[n],"flag"!==n&&(r.supports.everythingExceptFlag=r.supports.everythingExceptFlag&&r.supports[n]);var t;r.supports.everythingExceptFlag=r.supports.everythingExceptFlag&&!r.supports.flag,r.supports.everything||((t=r.source||{}).concatemoji?a(t.concatemoji):t.wpemoji&&t.twemoji&&(a(t.twemoji),a(t.wpemoji)))}); 1726//# sourceURL=https://www.isska.ch/wp-includes/js/wp-emoji-loader.min.js 1727</script>
1727 1728 1729<nav 1730 class="trp-language-switcher trp-floating-switcher trp-ls-dropdown trp-switcher-position-bottom" 1731 style="--bg:#000000;--bg-hover:#444444;--text:#ffffff;--text-hover:#eeeeee;--border:1px solid transparent;--border-radius:8px 8px 0px 0px;--flag-radius:2px;--flag-size:18px;--aspect-ratio:4/3;--font-size:14px;--switcher-width:auto;--switcher-padding:10px 0;--transition-duration:0.2s;--bottom:0px;--left:10vw" 1732 role="navigation" 1733 aria-label="Sélecteur de langue du site web" 1734 data-no-translation 1735> 1736 1737 <div class="trp-language-switcher-inner"> 1738 <div class="trp-language-item trp-language-item__current" title="FR" role="button" tabindex="0" aria-expanded="false" aria-label="Changer de langue" aria-controls="trp-switcher-dropdown-list" data-no-translation><img src="https://www.isska.ch/wp-content/plugins/translatepress-multilingual/assets/flags/4x3/fr_FR.svg" class="trp-flag-image" alt="" role="presentation" loading="lazy" decoding="async" width="18" height="14" /><span class="trp-language-item-name">FR</span></div> 1739 <div 1740 class="trp-switcher-dropdown-list" 1741 id="trp-switcher-dropdown-list" 1742 role="group" 1743 aria-label="Langues disponibles" 1744 hidden 1745 inert 1746 > 1747 <a href="https://www.isska.ch/de/kompetenzen/geosciences/" class="trp-language-item" title="DE" data-no-translation><img src="https://www.isska.ch/wp-content/plugins/translatepress-multilingual/assets/flags/4x3/de_CH.svg" class="trp-flag-image" alt="" role="presentation" loading="lazy" decoding="async" width="18" height="14" /><span class="trp-language-item-name">DE</span></a> <a href="https://www.isska.ch/en/skills/geosciences/" class="trp-language-item" title="EN" data-no-translation><img src="https://www.isska.ch/wp-content/plugins/translatepress-multilingual/assets/flags/4x3/en_GB.svg" class="trp-flag-image" alt="" role="presentation" loading="lazy" decoding="async" width="18" height="14" /><span class="trp-language-item-name">EN</span></a> </div> 1748 </div> 1749 1750 </nav> 1751 </body> 1752</html> 1753 1754 1755<!-- Page supported by LiteSpeed Cache 7.9.1 on 2026-10-02 05:32:44 --> 1756<!-- Dynamic page generated in 5.766 seconds. --> 1757<!-- Cached page generated by WP-Super-Cache on 2026-10-02 05:32:44 --> 1758 1759<!-- super cache -->
Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.