{"id":1843002,"date":"2025-06-24T17:23:21","date_gmt":"2025-06-24T21:23:21","guid":{"rendered":"https:\/\/www.maproomblog.com\/?p=1843002"},"modified":"2025-06-24T17:23:23","modified_gmt":"2025-06-24T21:23:23","slug":"27-3-of-the-ocean-floor-has-now-been-mapped","status":"publish","type":"post","link":"https:\/\/www.maproomblog.com\/2025\/06\/27-3-of-the-ocean-floor-has-now-been-mapped\/","title":{"rendered":"27.3% of the Ocean Floor Has Now Been Mapped"},"content":{"rendered":"\n
\"A
Seabed 2030<\/figcaption><\/figure>\n\n\n\n

The Seabed 2030 project announced on Saturday<\/a> that \u201c27.3% of the world\u2019s ocean floor has now been mapped to modern standards. The increase in data represents more than four million square kilometres of newly mapped seafloor\u2014an area roughly equivalent to the entire Indian subcontinent.\u201d The above map shows the progress to date, with new bathymetric data added over the past year indicated in red. Data compiled by this project is freely available via GEBCO<\/abbr>\u2019s global grid<\/a>.<\/p>\n\n\n\n

Previously: Mapping the Ocean Floor by 2030<\/a>; \u2018Cartographically Speaking, Water Sucks\u2019<\/a><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

The Seabed 2030 project announced on Saturday that \u201c27.3% of the world\u2019s ocean floor has now been mapped to modern standards. The increase in data represents more than four million square kilometres of newly mapped… More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"link","meta":{"autoblue_enabled":true,"autoblue_custom_message":"","autoblue_shares":[],"autoblue_post_url":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[230],"tags":[431,658,430],"class_list":["post-1843002","post","type-post","status-publish","format-link","hentry","category-oceans","tag-bathymetry","tag-gebco","tag-seafloor","post_format-post-format-link"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":2979,"url":"https:\/\/www.maproomblog.com\/2016\/10\/mapping-the-ocean-floor-by-2030\/","url_meta":{"origin":1843002,"position":0},"title":"Mapping the Ocean Floor by 2030","author":"Jonathan Crowe","date":"3 October 2016","format":"link","excerpt":"Newsweek\u00a0looks at efforts by a group of scientists and mariners to map most of the ocean floor by the year 2030. The objective was endorsed by a meeting of GEBCO, the General Bathymetric Chart of the Oceans, last June. The scale\u00a0of the project is vast: To date, more than 85\u2026","rel":"","context":"In "Oceans"","block_context":{"text":"Oceans","link":"https:\/\/www.maproomblog.com\/category\/oceans\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1838783,"url":"https:\/\/www.maproomblog.com\/2025\/04\/seafloor-features-mapped-by-satellite\/","url_meta":{"origin":1843002,"position":1},"title":"Seafloor Features Mapped by Satellite","author":"Jonathan Crowe","date":"1 April 2025","format":"link","excerpt":"NASA Earth Observatory (Michala Garrison\/SWOT data) \u201cMapping the seafloor isn\u2019t the SWOT mission\u2019s primary purpose,\u201d says the JPL, and yet the\u00a0Surface Water and Ocean Topography (SWOT)\u00a0satellite is being used for more than measuring sea surface height: those ocean surface topography measurements can be used to infer features on the seafloor.\u2026","rel":"","context":"In "Oceans"","block_context":{"text":"Oceans","link":"https:\/\/www.maproomblog.com\/category\/oceans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2025\/04\/eo-seamounts-abyssal.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2025\/04\/eo-seamounts-abyssal.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2025\/04\/eo-seamounts-abyssal.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2025\/04\/eo-seamounts-abyssal.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2025\/04\/eo-seamounts-abyssal.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2025\/04\/eo-seamounts-abyssal.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":655,"url":"https:\/\/www.maproomblog.com\/2016\/01\/seafloor-gravity-map\/","url_meta":{"origin":1843002,"position":2},"title":"Seafloor Gravity Map","author":"Jonathan Crowe","date":"31 January 2016","format":"link","excerpt":"The ocean floor\u00a0is\u00a0still very much\u00a0terra incognita: only 5 to 15 percent of it has been mapped via bathymetry. But using military satellite measurements of the Earth's shape and gravity field, a new map of the ocean floor has been created. \"The result of their efforts is a global data set\u2026","rel":"","context":"In "Oceans"","block_context":{"text":"Oceans","link":"https:\/\/www.maproomblog.com\/category\/oceans\/"},"img":{"alt_text":"seafloor","src":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2016\/01\/seafloor-1024x737.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2016\/01\/seafloor-1024x737.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2016\/01\/seafloor-1024x737.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2016\/01\/seafloor-1024x737.jpg?resize=700%2C400 2x"},"classes":[]},{"id":1825056,"url":"https:\/\/www.maproomblog.com\/2024\/01\/cartographically-speaking-water-sucks\/","url_meta":{"origin":1843002,"position":3},"title":"‘Cartographically Speaking, Water Sucks’","author":"Jonathan Crowe","date":"19 January 2024","format":"link","excerpt":"https:\/\/www.youtube.com\/watch?v=Cz24meZACsY Last October, on her Huge If True YouTube channel, Cleo Abram explored the state of deep ocean mapping, why it lags behind our mapping of, say, Mars, and what\u2019s being done to chart the ocean floor at a higher resolution than currently exists (e.g. the Seabed 2030 project). All\u2026","rel":"","context":"In "Oceans"","block_context":{"text":"Oceans","link":"https:\/\/www.maproomblog.com\/category\/oceans\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/Cz24meZACsY\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1809954,"url":"https:\/\/www.maproomblog.com\/2022\/11\/extent-of-tongan-eruption-revealed-by-new-seafloor-maps\/","url_meta":{"origin":1843002,"position":4},"title":"Extent of Tongan Eruption Revealed by New Seafloor Maps","author":"Jonathan Crowe","date":"20 November 2022","format":"link","excerpt":"Scientists have now mapped the seafloor around the Hunga Tonga-Hunga Ha\u2018apai volcano, and as a result we have learned just how massive the January 2022 eruption was. By comparing their soundings with 2017 data, they determined that at least 9.5 km3 of material was discharged. Debris was found 80 km\u2026","rel":"","context":"In "Disasters"","block_context":{"text":"Disasters","link":"https:\/\/www.maproomblog.com\/category\/disasters\/"},"img":{"alt_text":"Hunga Tonga-Hunga Ha'apai 3D bathymetry map","src":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2022\/11\/niwa-tonga-caldera-1024x576.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2022\/11\/niwa-tonga-caldera-1024x576.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2022\/11\/niwa-tonga-caldera-1024x576.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2022\/11\/niwa-tonga-caldera-1024x576.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":2735,"url":"https:\/\/www.maproomblog.com\/2016\/08\/marie-tharp-continental-drift-as-girl-talk\/","url_meta":{"origin":1843002,"position":5},"title":"Marie Tharp: Continental Drift as ‘Girl Talk’","author":"Jonathan Crowe","date":"31 August 2016","format":"link","excerpt":"Another profile of ocean cartographer Marie Tharp, this time from Smithsonian.com's Erin Blakemore. As Blakemore recounts, Tharp\u00a0crunched\u00a0and mapped the sonar sounding data collected by her collaborator, Bruce Heezen; her calculations revealed a huge valley in the middle of a ridge in the North Atlantic seafloor. \u201cWhen I showed what I\u2026","rel":"","context":"In "Geology"","block_context":{"text":"Geology","link":"https:\/\/www.maproomblog.com\/category\/geology\/"},"img":{"alt_text":"tharp-heezen","src":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2016\/08\/tharp-heezen-150x150.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/posts\/1843002","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/comments?post=1843002"}],"version-history":[{"count":4,"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/posts\/1843002\/revisions"}],"predecessor-version":[{"id":1843029,"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/posts\/1843002\/revisions\/1843029"}],"wp:attachment":[{"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/media?parent=1843002"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/categories?post=1843002"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/tags?post=1843002"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}