{"id":1809954,"date":"2022-11-20T21:10:00","date_gmt":"2022-11-21T02:10:00","guid":{"rendered":"https:\/\/www.maproomblog.com\/?p=1809954"},"modified":"2022-11-21T11:11:40","modified_gmt":"2022-11-21T16:11:40","slug":"extent-of-tongan-eruption-revealed-by-new-seafloor-maps","status":"publish","type":"post","link":"https:\/\/www.maproomblog.com\/2022\/11\/extent-of-tongan-eruption-revealed-by-new-seafloor-maps\/","title":{"rendered":"Extent of Tongan Eruption Revealed by New Seafloor Maps"},"content":{"rendered":"
\"Hunga
NIWA\/Nippon Foundation TESMaP<\/figcaption><\/figure>\n

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<\/sup> of material was discharged. Debris was found 80 km from the volcano, and the volcano\u2019s caldera has been replaced by a cavern 850 m deep. More from the NIWA media release<\/a> and from ABC (Australia)<\/a>.<\/p>\n

Previously: Remotely Operated Vessel Maps Tonga Caldera<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

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… 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":[846,230],"tags":[431,1553,682],"class_list":["post-1809954","post","type-post","status-publish","format-link","hentry","category-disasters","category-oceans","tag-bathymetry","tag-tonga","tag-volcanoes","post_format-post-format-link"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":1808746,"url":"https:\/\/www.maproomblog.com\/2022\/08\/remotely-operated-vessel-maps-tonga-caldera\/","url_meta":{"origin":1809954,"position":0},"title":"Remotely Operated Vessel Maps Tonga Caldera","author":"Jonathan Crowe","date":"26 August 2022","format":"link","excerpt":"As part of the Tonga Eruption Seabed Mapping Project, a robotic vessel has conducted a bathymetric survey of the Hunga Tonga-Hunga Ha\u2018apai volcano\u2019s underwater caldera. Said volcano, you will recall, erupted spectacularly last January. The 12-metre vessel, USV Maxlimer, was controlled remotely from 16,000 km away, and carried sensors to\u2026","rel":"","context":"In "Disasters"","block_context":{"text":"Disasters","link":"https:\/\/www.maproomblog.com\/category\/disasters\/"},"img":{"alt_text":"Aerial view of the Hunga-Tonga Hunga-Ha\u2019apai (HT-HH) volcano, showing new multibeam depth data overlaid on a satellite image of the islands (deep depths in blue, shallow depths in red).","src":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2022\/08\/tonga-post-eruption-300x300.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":1805949,"url":"https:\/\/www.maproomblog.com\/2022\/01\/hunga-tonga-hunga-haapai-before-and-after\/","url_meta":{"origin":1809954,"position":1},"title":"Hunga Tonga-Hunga Ha\u2018apai, Before and After","author":"Jonathan Crowe","date":"27 January 2022","format":"link","excerpt":"NASA Earth Observatory has released digital elevation maps of Hunga Tonga-Hunga Ha\u2018apai both before and after the volcanic eruption earlier this month. The digital elevation maps above and below show the dramatic changes at Hunga Tonga-Hunga Ha\u2018apai, the uppermost part of a large underwater volcano. It rises 1.8 kilometers (1.1\u2026","rel":"","context":"In "Disasters"","block_context":{"text":"Disasters","link":"https:\/\/www.maproomblog.com\/category\/disasters\/"},"img":{"alt_text":"Two maps showing Hunga Tonga-Hunga Ha\u2018apai before and after the volcanic eruption of January 2022","src":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2022\/01\/nasa-eo-hunga-tonga-1024x350.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2022\/01\/nasa-eo-hunga-tonga-1024x350.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2022\/01\/nasa-eo-hunga-tonga-1024x350.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2022\/01\/nasa-eo-hunga-tonga-1024x350.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":1805902,"url":"https:\/\/www.maproomblog.com\/2022\/01\/how-satellites-revealed-the-hunga-tonga-hunga-haapai-eruption\/","url_meta":{"origin":1809954,"position":2},"title":"How Satellites Revealed the Hunga-Tonga Hunga-Ha’apai Eruption","author":"Jonathan Crowe","date":"20 January 2022","format":"link","excerpt":"The BBC\u2019s Jonathan Amos looks at the ways satellites have collected imagery and data on the Hunga-Tonga Hunga-Ha\u2019apai volcanic eruption.","rel":"","context":"In "Disasters"","block_context":{"text":"Disasters","link":"https:\/\/www.maproomblog.com\/category\/disasters\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1806030,"url":"https:\/\/www.maproomblog.com\/2022\/02\/the-rise-and-fall-of-hunga-tonga-hunga-haapai\/","url_meta":{"origin":1809954,"position":3},"title":"The Rise and Fall of Hunga Tonga-Hunga Ha\u2018apai","author":"Jonathan Crowe","date":"11 February 2022","format":"link","excerpt":"A storymap from Esri\u2019s Robert Waterman, based on Maxar satellite imagery, shows the rise and fall of Hunga Tonga and Hunga Ha\u2018apai from being two separate islands before a 2015 eruption combined them, through its time as an apparently stable but awkwardly compound-named single island until it got blown apart\u2026","rel":"","context":"In "Disasters"","block_context":{"text":"Disasters","link":"https:\/\/www.maproomblog.com\/category\/disasters\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1827287,"url":"https:\/\/www.maproomblog.com\/2024\/02\/satellite-imagery-of-the-eruption-near-grindavik\/","url_meta":{"origin":1809954,"position":4},"title":"Satellite Imagery of the Eruption Near Grindav\u00edk","author":"Jonathan Crowe","date":"9 February 2024","format":"link","excerpt":"The Copernicus-2A satellite imaged the smoke plume and lava flow from the eruption of the Fagradalsfjall volcano near Grindav\u00edk, Iceland yesterday; Marco Langbroek processed natural-colour and short-wave infrared imagery to achieve the above image, which he posted to Bluesky. [Kottke] Previously: Earthquake Swarms and an Imminent Eruption in Iceland.","rel":"","context":"In "Disasters"","block_context":{"text":"Disasters","link":"https:\/\/www.maproomblog.com\/category\/disasters\/"},"img":{"alt_text":"Satellite image of the smoke plume and lava flow from the eruption of the Fagradalsfjall volcano near Grindav\u00edk, Iceland, taken on 8 Feb 2024 and processed by Marco Langbroek.","src":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2024\/02\/grindavik-copernicus-sentinel-langbroek-1024x725.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2024\/02\/grindavik-copernicus-sentinel-langbroek-1024x725.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2024\/02\/grindavik-copernicus-sentinel-langbroek-1024x725.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2024\/02\/grindavik-copernicus-sentinel-langbroek-1024x725.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":1524,"url":"https:\/\/www.maproomblog.com\/2016\/04\/monterey-bay-area-seafloor-maps-released\/","url_meta":{"origin":1809954,"position":5},"title":"Monterey Bay Area Seafloor Maps Released","author":"Jonathan Crowe","date":"13 April 2016","format":"link","excerpt":"New seafloor maps of the Monterey Bay area have been released as part of the California Seafloor Mapping Program. The maps \"reveal the diverse and complex range of seafloor habitats along 130 kilometers (80 miles) of the central California coast from the Monterey Peninsula north to Pigeon Point.\" [Leventhal Map\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\/2016\/04\/monterey-bathymetry-150x91.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2016\/04\/monterey-bathymetry-150x91.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2016\/04\/monterey-bathymetry-150x91.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2016\/04\/monterey-bathymetry-150x91.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2016\/04\/monterey-bathymetry-150x91.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.maproomblog.com\/xq\/wp-content\/uploads\/2016\/04\/monterey-bathymetry-150x91.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/posts\/1809954","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=1809954"}],"version-history":[{"count":1,"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/posts\/1809954\/revisions"}],"predecessor-version":[{"id":1809957,"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/posts\/1809954\/revisions\/1809957"}],"wp:attachment":[{"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/media?parent=1809954"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/categories?post=1809954"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.maproomblog.com\/wp-json\/wp\/v2\/tags?post=1809954"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}