{"id":144,"date":"2015-07-22T17:50:49","date_gmt":"2015-07-22T16:50:49","guid":{"rendered":"http:\/\/marine.geophysicsgpr.com\/?page_id=144"},"modified":"2017-03-09T17:19:31","modified_gmt":"2017-03-09T16:19:31","slug":"reflexion","status":"publish","type":"page","link":"https:\/\/marine.geophysicsgpr.com\/fr\/techniques-geophysiques-marine\/techniques-sismiques-marine\/reflexion","title":{"rendered":"R\u00e9flexion"},"content":{"rendered":"<div id=\"pl-144\"  class=\"panel-layout\" ><div id=\"pg-144-0\"  class=\"panel-grid panel-no-style\" ><div id=\"pgc-144-0-0\"  class=\"panel-grid-cell\" ><div id=\"panel-144-0-0-0\" class=\"so-panel widget widget_sow-editor panel-first-child panel-last-child\" data-index=\"0\" ><div class=\"texte-home-right article panel-widget-style panel-widget-style-for-144-0-0-0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-editor so-widget-sow-editor-base\"\n\t\t\t\n\t\t>\n<div class=\"siteorigin-widget-tinymce textwidget\">\n\t<p>La m\u00e9thode de sismique r\u00e9flexion s\u2019appuie sur l\u2019envoi d\u2019une onde sismique dans le fond marin et sur l\u2019enregistrement des ondes refl\u00e9t\u00e9es par les couches g\u00e9ologiques sous-jacentes. La sismique r\u00e9flexion s\u2019av\u00e8re id\u00e9ale pour cartographier la g\u00e9ologie \u00e0 des profondeurs exc\u00e9dant 50 m.<\/p>\n<h2 class=\"h2resize\">Les applications typiques de la sismique r\u00e9flexion comprennent :<\/h2>\n<ul>\n<li>Profilage du substratum rocheux et localisation de zones de failles et de fractures;<\/li>\n<li>Connaissance de l\u2019\u00e9paisseur de couches de morts-terrains;<\/li>\n<li>Identification des contacts g\u00e9ologiques subverticaux.<\/li>\n<\/ul>\n<p>Dans le domaine marin, il existe deux m\u00e9thodes d'application de la sismique r\u00e9flexion.\u00a0 La premi\u00e8re cherche \u00e0 identifier des structures \u00e0 plus de 10 ou 20 m\u00e8tres de profondeur sous le fond marin; elle est semblable \u00e0 l'utilisation de la technique sur terre mais avec des corrections pour la travers\u00e9e du volume d'eau.<\/p>\n<p>La seconde, que nous verrons \u00e9galement,\u00a0 cherche \u00e0 identifier des structures situ\u00e9es \u00e0 moins de 20 m\u00e8tres\u00a0sous le\u00a0fond marin.\u00a0 Elle est habituellement appel\u00e9e profilage sous-marin.\u00a0 Sa p\u00e9n\u00e9tration est nettement plus limit\u00e9e mais sa r\u00e9solution est beaucoup plus \u00e9lev\u00e9e.<\/p>\n<p>\u00a0<\/p>\n<p>\u00a0<\/p>\n<p>Pour plus d'informations, veuillez contacter notre <span style=\"color: #013ca6\"><a style=\"color: #013ca6\" href=\"mailto:info@geophysicsgpr.com\">\u00c9quipe de lev\u00e9 marin<\/a><\/span>.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><div id=\"pg-144-1\"  class=\"panel-grid panel-no-style\" ><div id=\"pgc-144-1-0\"  class=\"panel-grid-cell\" ><div id=\"panel-144-1-0-0\" class=\"so-panel widget widget_sow-image panel-first-child panel-last-child\" data-index=\"1\" ><div class=\"panel-widget-style panel-widget-style-for-144-1-0-0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-image so-widget-sow-image-default-8b5b6f678277-144\"\n\t\t\t\n\t\t>\n<div class=\"sow-image-container\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/marine.geophysicsgpr.com\/wp-content\/uploads\/sites\/5\/2015\/07\/reflection-1.png\" width=\"1795\" height=\"423\" srcset=\"https:\/\/marine.geophysicsgpr.com\/wp-content\/uploads\/sites\/5\/2015\/07\/reflection-1.png 1795w, https:\/\/marine.geophysicsgpr.com\/wp-content\/uploads\/sites\/5\/2015\/07\/reflection-1-300x71.png 300w, https:\/\/marine.geophysicsgpr.com\/wp-content\/uploads\/sites\/5\/2015\/07\/reflection-1-1024x241.png 1024w\" sizes=\"auto, (max-width: 1795px) 100vw, 1795px\" title=\"Marine techniques reflection\" alt=\"R\u00e9flexion\" \t\tclass=\"so-widget-image\"\/>\n\t<\/div>\n\n<\/div><\/div><\/div><\/div><div id=\"pgc-144-1-1\"  class=\"panel-grid-cell\" ><div id=\"panel-144-1-1-0\" class=\"so-panel widget widget_sow-image panel-first-child panel-last-child\" data-index=\"2\" ><div class=\"panel-widget-style panel-widget-style-for-144-1-1-0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-image so-widget-sow-image-default-8b5b6f678277-144\"\n\t\t\t\n\t\t>\n<div class=\"sow-image-container\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/marine.geophysicsgpr.com\/wp-content\/uploads\/sites\/5\/2015\/07\/reflection-2.png\" width=\"1795\" height=\"423\" srcset=\"https:\/\/marine.geophysicsgpr.com\/wp-content\/uploads\/sites\/5\/2015\/07\/reflection-2.png 1795w, https:\/\/marine.geophysicsgpr.com\/wp-content\/uploads\/sites\/5\/2015\/07\/reflection-2-300x71.png 300w, https:\/\/marine.geophysicsgpr.com\/wp-content\/uploads\/sites\/5\/2015\/07\/reflection-2-1024x241.png 1024w\" sizes=\"auto, (max-width: 1795px) 100vw, 1795px\" title=\"Marine techniques reflection\" alt=\"R\u00e9flexion\" \t\tclass=\"so-widget-image\"\/>\n\t<\/div>\n\n<\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>La m\u00e9thode de sismique r\u00e9flexion s\u2019appuie sur l\u2019envoi d\u2019une onde sismique dans le fond marin et sur l\u2019enregistrement des ondes refl\u00e9t\u00e9es par les couches g\u00e9ologiques sous-jacentes. La sismique r\u00e9flexion s\u2019av\u00e8re id\u00e9ale pour cartographier la g\u00e9ologie \u00e0 des profondeurs exc\u00e9dant 50 m.Les applications typiques de la sismique r\u00e9flexion comprennent :Profilage du substratum rocheux et localisation de&#8230;  <a href=\"https:\/\/marine.geophysicsgpr.com\/fr\/techniques-geophysiques-marine\/techniques-sismiques-marine\/reflexion\" class=\"more-link\" title=\"Read R\u00e9flexion\">Read more &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":78,"parent":100,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-full-width.php","meta":{"content-type":"","footnotes":""},"class_list":["post-144","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/marine.geophysicsgpr.com\/fr\/wp-json\/wp\/v2\/pages\/144","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/marine.geophysicsgpr.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/marine.geophysicsgpr.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/marine.geophysicsgpr.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/marine.geophysicsgpr.com\/fr\/wp-json\/wp\/v2\/comments?post=144"}],"version-history":[{"count":9,"href":"https:\/\/marine.geophysicsgpr.com\/fr\/wp-json\/wp\/v2\/pages\/144\/revisions"}],"predecessor-version":[{"id":1614,"href":"https:\/\/marine.geophysicsgpr.com\/fr\/wp-json\/wp\/v2\/pages\/144\/revisions\/1614"}],"up":[{"embeddable":true,"href":"https:\/\/marine.geophysicsgpr.com\/fr\/wp-json\/wp\/v2\/pages\/100"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/marine.geophysicsgpr.com\/fr\/wp-json\/wp\/v2\/media\/78"}],"wp:attachment":[{"href":"https:\/\/marine.geophysicsgpr.com\/fr\/wp-json\/wp\/v2\/media?parent=144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}