{"id":2517,"date":"2025-04-06T17:36:16","date_gmt":"2025-04-06T15:36:16","guid":{"rendered":"https:\/\/africanova.info\/?p=2517"},"modified":"2025-04-06T17:36:19","modified_gmt":"2025-04-06T15:36:19","slug":"montee-des-eaux-en-afrique-et-en-asie-des-villes-cotieres-sous-menace-imminente","status":"publish","type":"post","link":"https:\/\/africanova.info\/?p=2517","title":{"rendered":"Mont\u00e9e des eaux en Afrique et en Asie : des villes c\u00f4ti\u00e8res sous menace imminente"},"content":{"rendered":"

Introduction :<\/strong>
Le dernier rapport du GIEC (avril 2025) alerte sur l\u2019acc\u00e9l\u00e9ration de la mont\u00e9e des oc\u00e9ans, qui menace directement des m\u00e9tropoles c\u00f4ti\u00e8res en Afrique et en Asie. Lagos (Nigeria), Alexandrie (\u00c9gypte), Dacca (Bangladesh) et Bangkok (Tha\u00eflande) figurent parmi les villes les plus vuln\u00e9rables, o\u00f9 des millions de personnes pourraient \u00eatre d\u00e9plac\u00e9es d\u2019ici 2050.<\/p>

Causes et projections :<\/strong>
La fonte acc\u00e9l\u00e9r\u00e9e des calottes glaciaires du Groenland et de l\u2019Antarctique, combin\u00e9e \u00e0 l\u2019expansion thermique des oc\u00e9ans, entra\u00eene une \u00e9l\u00e9vation du niveau de la mer estim\u00e9e \u00e0 1,2 m\u00e8tre d\u2019ici la fin du si\u00e8cle. En Afrique de l\u2019Ouest, des pays comme le S\u00e9n\u00e9gal et le B\u00e9nin subissent d\u00e9j\u00e0 des inondations r\u00e9currentes, avec des cons\u00e9quences dramatiques sur l\u2019agriculture et l\u2019habitat.<\/p>

Cas concret : Lagos, une m\u00e9galopole en sursis<\/strong>
Avec 70 % de sa superficie situ\u00e9e en dessous du niveau de la mer, Lagos est particuli\u00e8rement expos\u00e9e. Les quartiers populaires de Makoko et Badia East sont r\u00e9guli\u00e8rement inond\u00e9s, for\u00e7ant des milliers d\u2019habitants \u00e0 migrer vers l\u2019int\u00e9rieur des terres. Les autorit\u00e9s nig\u00e9rianes envisagent la construction d\u2019une \u00ab digue g\u00e9ante \u00bb, mais le projet, estim\u00e9 \u00e0 2 milliards de dollars, peine \u00e0 trouver des financements internationaux.<\/p>

\"\"
Aerial View natural disaster and\nflooding in Thailand.<\/figcaption><\/figure>

Solutions innovantes :<\/strong><\/p>

  • Asie<\/strong>\u00a0: \u00c0 Jakarta (Indon\u00e9sie), le gouvernement a lanc\u00e9 un projet pharaonique de \u00ab ville intelligente \u00bb sur une \u00eele artificielle pour reloger les populations menac\u00e9es.<\/li><\/ul>
    • Afrique<\/strong>\u00a0: Des ing\u00e9nieurs k\u00e9nyans d\u00e9veloppent des maisons flottantes en mat\u00e9riaux recycl\u00e9s, test\u00e9es dans les bidonvilles de Mombasa.<\/li><\/ul>

      D\u00e9fis politiques et \u00e9conomiques :<\/strong>
      Les pays africains et asiatiques r\u00e9clament une solidarit\u00e9 internationale accrue, notamment via le Fonds vert pour le climat. Cependant, les promesses des pays industrialis\u00e9s restent largement insuffisantes face \u00e0 l\u2019urgence.<\/p>

      Conclusion :<\/strong>
      La mont\u00e9e des eaux exige une r\u00e9ponse coordonn\u00e9e, m\u00ealant innovations locales et coop\u00e9ration internationale. Sans action radicale, des millions de \u00ab r\u00e9fugi\u00e9s climatiques \u00bb pourraient \u00eatre contraints \u00e0 l\u2019exode, aggravant les tensions sociales et \u00e9conomiques.<\/p>

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

      Introduction :Le dernier rapport du GIEC (avril 2025) alerte sur l\u2019acc\u00e9l\u00e9ration de la mont\u00e9e des oc\u00e9ans, qui menace directement des m\u00e9tropoles c\u00f4ti\u00e8res en Afrique et en Asie. Lagos (Nigeria), Alexandrie…<\/p>\n","protected":false},"author":1,"featured_media":2518,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_lmt_disableupdate":"","_lmt_disable":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2517","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"jetpack_featured_media_url":"https:\/\/africanova.info\/wp-content\/uploads\/2025\/04\/811430.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/africanova.info\/index.php?rest_route=\/wp\/v2\/posts\/2517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/africanova.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/africanova.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/africanova.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/africanova.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2517"}],"version-history":[{"count":1,"href":"https:\/\/africanova.info\/index.php?rest_route=\/wp\/v2\/posts\/2517\/revisions"}],"predecessor-version":[{"id":2520,"href":"https:\/\/africanova.info\/index.php?rest_route=\/wp\/v2\/posts\/2517\/revisions\/2520"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/africanova.info\/index.php?rest_route=\/wp\/v2\/media\/2518"}],"wp:attachment":[{"href":"https:\/\/africanova.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/africanova.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/africanova.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}