{"id":73000,"date":"2026-05-05T18:06:48","date_gmt":"2026-05-05T12:36:48","guid":{"rendered":"https:\/\/www.nextias.com\/ca\/?p=73000"},"modified":"2026-05-05T18:07:34","modified_gmt":"2026-05-05T12:37:34","slug":"geoengineering-stabilise-amoc","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/05-05-2026\/geoengineering-stabilise-amoc","title":{"rendered":"Geoengineering Approach to Stabilise Atlantic Meridional Overturning Circulation (AMOC)"},"content":{"rendered":"\n<p><strong>Syllabus: GS1\/ Geography<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Context<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A recent study from Utrecht University examines whether constructing a dam across the Bering Strait could help stabilize the Atlantic Meridional Overturning Circulation.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Atlantic Meridional Overturning Circulation (AMOC)<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The AMOC is a vast<strong> ocean current system<\/strong> in which warm, <strong>salty surface water flows northward<\/strong>, cools, becomes denser, sinks in the North Atlantic, and then returns southward at deeper levels.<\/li>\n\n\n\n<li>The AMOC is essential for<strong> regulating the Earth\u2019s climate<\/strong>, as it redistributes heat from the tropics to higher latitudes and helps maintain temperature balance across regions.<\/li>\n\n\n\n<li><strong>Variations in temperature and salinity,<\/strong> particularly due to the influx of freshwater from melting ice sheets, can <strong>reduce water density, weaken the sinking process, and thereby slow down or disrupt<\/strong> the Atlantic Meridional Overturning Circulation.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img data-dominant-color=\"cdd3d8\" data-has-transparency=\"false\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"711\" src=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/05\/image-29-1024x711.png\" alt=\"AMOC\" class=\"not-transparent wp-image-73002\" style=\"--dominant-color: #cdd3d8; aspect-ratio:1.4402443271626437;width:459px;height:auto\" srcset=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/05\/image-29-1024x711.png 1024w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/05\/image-29-300x208.png 300w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/05\/image-29-768x533.png 768w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/05\/image-29-1536x1067.png 1536w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/05\/image-29.png 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>Mechanism of Bering Strait Closure<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The Bering Strait connects the <strong>Pacific Ocean with the Arctic Ocean<\/strong> and allows freshwater inflow into the Arctic.<\/li>\n\n\n\n<li>The idea of altering ocean circulation through a dam was proposed in the <strong>1960s <\/strong>by <strong>Petr Mikhailovich Borisov.<\/strong><\/li>\n\n\n\n<li><strong>The proposed Bering Strait Dam consists of three separate parts:<\/strong>\n<ul class=\"wp-block-list\">\n<li>A part between the Russian mainland and the island of <strong>Big Diomede (38 km)<\/strong>,\u00a0<\/li>\n\n\n\n<li>A part between<strong> Big Diomede and Little Diomede (4 km),<\/strong> and\u00a0<\/li>\n\n\n\n<li>An eastern part between Little <strong>Diomede and Alaska (38 km).<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Significance:<\/strong> Constructing a dam across the Bering Strait could <strong>reduce freshwater inflow <\/strong>and <strong>maintain higher salinity<\/strong> in the North Atlantic.\n<ul class=\"wp-block-list\">\n<li><strong>Higher salinity<\/strong> could support deep water formation and potentially <strong>stabilise the Atlantic Meridional Overturning Circulation.<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img data-dominant-color=\"56b1b1\" data-has-transparency=\"false\" loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"388\" src=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/05\/image-28.png\" alt=\"mechanism of bering strait closure\" class=\"not-transparent wp-image-73001\" style=\"--dominant-color: #56b1b1; width:425px;height:auto\" srcset=\"https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/05\/image-28.png 768w, https:\/\/wp-images.nextias.com\/cdn-cgi\/image\/format=auto\/ca\/uploads\/2026\/05\/image-28-300x152.png 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>What are the Challenges?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Technical and Geographical Constraints:<\/strong> The Bering Strait is about <strong>80 kilometres <\/strong>wide and located in a remote region with limited infrastructure. Construction and maintenance of such a dam would be extremely difficult and costly.<\/li>\n\n\n\n<li><strong>Ecological Impacts: <\/strong>The Bering Strait serves as an important <strong>migration route for marine mammals<\/strong>. Altering currents and salinity could disrupt Arctic ecosystems and biodiversity.<\/li>\n\n\n\n<li><strong>Geopolitical Issues: <\/strong>The Bering Strait lies between <strong>Russia and the United States. <\/strong>The project raises concerns regarding decision-making authority and responsibility for consequences.<\/li>\n\n\n\n<li><strong>Ethical Concerns:<\/strong> The proposal represents large-scale geoengineering involving deliberate climate intervention.\n<ul class=\"wp-block-list\">\n<li>There is a risk of unintended consequences and long-term environmental impacts.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Way Ahead<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Scientific research on the Atlantic Meridional Overturning Circulation should be <strong>strengthened through better climate models,<\/strong> long-term ocean monitoring, and international data sharing.<\/li>\n\n\n\n<li>Geoengineering options such as<strong> closing the Bering Strait should be treated only as experimental and last-resort measures,<\/strong> not as substitutes for mitigation.<\/li>\n\n\n\n<li>Any large-scale geoengineering intervention must be guided by <strong>global governance frameworks,<\/strong> transparency, and consent of affected countries.<\/li>\n<\/ul>\n\n\n\n<p><strong>Source: <\/strong><a href=\"https:\/\/www.downtoearth.org.in\/climate-change\/damming-the-bering-could-a-dam-on-the-far-side-of-the-world-stabilise-the-amoc\" target=\"_blank\" rel=\"noopener\"><strong>DTE<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong> Context <\/strong><\/p>\n<li class=\"ms-5\"> A recent study from Utrecht University examines whether constructing a dam across the Bering Strait could help stabilize the Atlantic Meridional Overturning Circulation. <\/li>\n<p><\/p>\n<p><strong> Atlantic Meridional Overturning Circulation (AMOC) <\/strong><\/p>\n<li class=\"ms-5\"> The AMOC is a vast ocean current system in which warm, salty surface water flows northward, cools, becomes denser, sinks in the North Atlantic, and then returns southward at deeper levels. <\/li>\n<li class=\"ms-5\"> The AMOC is essential for regulating the Earth\u2019s climate, as it redistributes heat from the tropics to higher latitudes and helps maintain temperature balance across regions. <\/li>\n<p><a href=\" https:\/\/www.nextias.com\/ca\/current-affairs\/05-05-2026\/geoengineering-stabilise-amoc \" class=\"btn btn-primary btn-sm float-end\">Read More<\/a><\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-73000","post","type-post","status-publish","format-standard","hentry","category-current-affairs"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/73000","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=73000"}],"version-history":[{"count":2,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/73000\/revisions"}],"predecessor-version":[{"id":73004,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/73000\/revisions\/73004"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=73000"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=73000"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=73000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}