{"id":2189,"date":"2022-04-19T12:25:39","date_gmt":"2022-04-19T11:25:39","guid":{"rendered":"https:\/\/www.craag.dz\/teste\/?page_id=2189"},"modified":"2024-06-08T11:57:05","modified_gmt":"2024-06-08T10:57:05","slug":"seisme-del-asnam","status":"publish","type":"page","link":"https:\/\/www.craag.dz\/index.php\/seisme-del-asnam\/","title":{"rendered":"S\u00e9isme d’El Asnam"},"content":{"rendered":"\t\t
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<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tR\u00e9seau sismologique<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tSismicit\u00e9 historique<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tActivit\u00e9 sismique<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tS\u00e9isme de Boumerdes<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tS\u00e9isme d'Ain Temouchent<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tS\u00e9isme d'El Asnam<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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S\u00e9isme d'El Asnam 10\/10\/1980 m: 7.3<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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L<\/strong>e 10 Octobre 1980, la r\u00e9gion d\u2019El Asnam fut d\u00e9vast\u00e9e par un violent s\u00e9isme. Ce s\u00e9isme qui se produisit un vendredi \u00e0 13h29mn plongea toute une r\u00e9gion dans l\u2019horreur. 2630 personnes p\u00e9rirent et des milliers de logements furent d\u00e9truits. Les effets du s\u00e9isme se firent ressentir sur une vaste superficie du territoire allant de la r\u00e9gion Centre \u00e0 la r\u00e9gion Ouest du pays. Dans la r\u00e9gion \u00e9picentrale, la ville de Chleff f\u00fbt durement touch\u00e9 et de nombreuse communes de la Wilaya furent touch\u00e9es (Oued Fodda, El Atteuf, Sandjas\u2026\u2026).<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Le s\u00e9isme a eu de nombreux effets induits<\/strong>\u00a0:\u00a0 Des ph\u00e9nom\u00e8nes de liqu\u00e9faction ont \u00e9t\u00e9 observ\u00e9es \u00e0 diff\u00e9rents endroits de la r\u00e9gion \u00e9picentrale. Un m\u00e9ga ph\u00e9nom\u00e8ne d\u2019inondation a \u00e9t\u00e9 observ\u00e9e dans la plaine de Chettia ou le soul\u00e8vement de la faille a form\u00e9 une muraille emp\u00eachant l\u2019\u00e9coulement de l\u2019Oued Ech Cheliff<\/span><\/p>

L\u2019activit\u00e9 post sismique a \u00e9t\u00e9 intense puisque des milliers de r\u00e9pliques ont \u00e9t\u00e9 enregistr\u00e9es et ce pendant\u00a0 pr\u00e8s de trois ann\u00e9es.<\/span><\/p>

A la suite de ce s\u00e9isme, \u00a0la r\u00e9gion b\u00e9n\u00e9ficia d\u2019un gigantesque programme de reconstruction qui \u00e9limina peu \u00e0 peu les traces du d\u00e9sastre . <\/span><\/p>

Le s\u00e9isme restera comme \u00e9tant l\u2019un des plus violents qu\u2019a connu la r\u00e9gion ouest M\u00e9diterran\u00e9enne. Gr\u00e2ce aux travaux effectu\u00e9es, il permit ainsi de mieux comprendre les causes de la sismicit\u00e9 alg\u00e9rienne et permit ainsi le lancement de la r\u00e9glementation parasismique dans le pays.<\/span><\/p>

Malgr\u00e9 tous les efforts d\u00e9ploy\u00e9s depuis ce s\u00e9isme pour la r\u00e9duction du risque sismique, il n\u2019en demeure pas moins que la t\u00e2che reste importante pour\u00a0 r\u00e9duire la vuln\u00e9rabilit\u00e9 du b\u00e2ti. Ainsi les petites secousses qui se produisent de temps \u00e0 autres dans la r\u00e9gion rappelle sans cesse son caract\u00e8re sismique.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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La r\u00e9gion de Chleff a connu \u00e9galement de par le pass\u00e9 plusieurs s\u00e9ismes destructeurs dont celui du 09 Septembre 1954. A cette \u00e9poque, le s\u00e9isme avait entrain\u00e9 la mort de\u00a0 et caus\u00e9 des d\u00e9g\u00e2ts importants.<\/span><\/p>

La sismicit\u00e9 de la r\u00e9gion de Chleff s\u2019explique par le fait qu\u2019elle se situe au niveau de la r\u00e9gion nord alg\u00e9rienne qui se d\u00e9forme peu \u00e0 peu en raison de la convergence des deux plaques Africaine et Eurasiatique. Cette convergence entraine peu \u00e0 peu La fermeture des bassins Mord Alg\u00e9riens.
Le s\u00e9isme a \u00e9t\u00e9 provoqu\u00e9 par la rupture de la faille de Oued Fodda s\u2019\u00e9talant sur pr\u00e8s de 40 Km dans une direction NE-SW.\u00a0 Son m\u00e9canisme focal en compression r\u00e9sulte ainsi du rejeu d\u2019une faille inverse qui s\u2019est exprim\u00e9 en surface avec des rejeu de pr\u00e9s de 1m. Sur la partie sommitale de l\u2019anticlinal, le s\u00e9isme a conduit eu rejeu de failles en extrados s\u2019exprimant avec des rejets de pr\u00e8s de 6 m\u00e8tres.<\/span><\/p>

\u00a0<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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<\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

R\u00e9seau sismologique Sismicit\u00e9 historique Activit\u00e9 sismique S\u00e9isme de Boumerdes S\u00e9isme d’Ain Temouchent S\u00e9isme d’El Asnam S\u00e9isme d’El Asnam 10\/10\/1980 m: 7.3 Le 10 Octobre 1980, la r\u00e9gion d\u2019El Asnam fut d\u00e9vast\u00e9e par un violent s\u00e9isme. Ce s\u00e9isme qui se produisit un vendredi \u00e0 13h29mn plongea toute une r\u00e9gion dans l\u2019horreur. 2630 personnes p\u00e9rirent et des […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-2189","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.craag.dz\/index.php\/wp-json\/wp\/v2\/pages\/2189"}],"collection":[{"href":"https:\/\/www.craag.dz\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.craag.dz\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.craag.dz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.craag.dz\/index.php\/wp-json\/wp\/v2\/comments?post=2189"}],"version-history":[{"count":7,"href":"https:\/\/www.craag.dz\/index.php\/wp-json\/wp\/v2\/pages\/2189\/revisions"}],"predecessor-version":[{"id":5353,"href":"https:\/\/www.craag.dz\/index.php\/wp-json\/wp\/v2\/pages\/2189\/revisions\/5353"}],"wp:attachment":[{"href":"https:\/\/www.craag.dz\/index.php\/wp-json\/wp\/v2\/media?parent=2189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}