{"id":11903,"date":"2023-11-11T22:41:52","date_gmt":"2023-11-11T22:41:52","guid":{"rendered":"https:\/\/icelandgeology.net\/?p=11903"},"modified":"2023-11-11T23:14:14","modified_gmt":"2023-11-11T23:14:14","slug":"update-on-the-sundhnuka-kalffellsheidi-reykjanes-volcano-grindavik-dyke-intrusion","status":"publish","type":"post","link":"https:\/\/icelandgeology.net\/?p=11903","title":{"rendered":"Update on the Sundhn\u00faka \/ K\u00e1lffellshei\u00f0i \/ Reykjanes volcano \/ Fagradalsfjall volcano \/  Grindav\u00edk dyke intrusion"},"content":{"rendered":"<p>This is a short update. Information here might go outdated quickly and without warning. This update is written on 11. November at 22:42 UTC.<\/p>\n<ul>\n<li>The dyke is 15 km long at the writing of this article. It might be extending both north-east and south-west. Earthquake activity remains heavy but the magnitudes have dropped for now.<\/li>\n<li>The inflation in the area is around 120 cm or more since start of this yesterday (10. November 2023).<\/li>\n<li>The dyke now extends into the ocean and the part in the ocean is around 3 to 5 km. At shallow depth, this is going to result in explosive eruption for the first few hours to days.<\/li>\n<li>The magma is now at depth of 800 meters, where it is the most shallow. That might not result in a eruption at that location.<\/li>\n<li>Eruption is going to start without warning. Since Icelandic Met Office has issued that they can&#8217;t see the harmonic tremor start because of heavy earthquake activity in the dyke.<\/li>\n<li>There is now a major risk of large earthquakes both east and west of the dyke because of all the displacement resulting from him. Those might happen days or even weeks in the future.<\/li>\n<li>Icelandic Road Administration published pictures on Facebook <a href=\"https:\/\/www.facebook.com\/Vegagerdin\/posts\/747547004080622\" target=\"_blank\" rel=\"noopener\">here<\/a>, showing the damage from the displacement and from the earthquakes. The ground is falling apart and opening up.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_11907\" aria-describedby=\"caption-attachment-11907\" style=\"width: 525px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/Kvikugangur-Grindavik-11.11.2023-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-11907 size-large\" src=\"https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/Kvikugangur-Grindavik-11.11.2023-2-1024x1024.jpg\" alt=\"Image of the dyke in direct 15 km line from north-east to south-east. \" width=\"525\" height=\"525\" srcset=\"https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/Kvikugangur-Grindavik-11.11.2023-2-1024x1024.jpg 1024w, https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/Kvikugangur-Grindavik-11.11.2023-2-300x300.jpg 300w, https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/Kvikugangur-Grindavik-11.11.2023-2-150x150.jpg 150w, https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/Kvikugangur-Grindavik-11.11.2023-2-768x768.jpg 768w, https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/Kvikugangur-Grindavik-11.11.2023-2-100x100.jpg 100w, https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/Kvikugangur-Grindavik-11.11.2023-2.jpg 1125w\" sizes=\"auto, (max-width: 525px) 100vw, 525px\" \/><\/a><figcaption id=\"caption-attachment-11907\" class=\"wp-caption-text\">The dyke location. Copyright of this image belongs to Icelandic Met Office.<\/figcaption><\/figure>\n<p>It is difficult to know what happens next and this eruption is not going to be small or tourist friendly.<\/p>\n<figure id=\"attachment_11911\" aria-describedby=\"caption-attachment-11911\" style=\"width: 540px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-11911 size-full\" src=\"https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/231111_2120.png\" alt=\"Hundreds of green stars showing earthquakes larger than magnitude 3,0 next to Grindav\u00edk and nearby area.\" width=\"540\" height=\"400\" srcset=\"https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/231111_2120.png 540w, https:\/\/icelandgeology.net\/wp-content\/uploads\/2023\/11\/231111_2120-300x222.png 300w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><figcaption id=\"caption-attachment-11911\" class=\"wp-caption-text\">The insane amount of earthquake activity next to Grindav\u00edk town in last 48 hours. Copyright of this image belongs to Icelandic Met Office.<\/figcaption><\/figure>\n<p>I&#8217;ll post updates once I know more.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This is a short update. Information here might go outdated quickly and without warning. This update is written on 11. November at 22:42 UTC. The dyke is 15 km long at the writing of this article. It might be extending both north-east and south-west. Earthquake activity remains heavy but the magnitudes have dropped for now. &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/icelandgeology.net\/?p=11903\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Update on the Sundhn\u00faka \/ K\u00e1lffellshei\u00f0i \/ Reykjanes volcano \/ Fagradalsfjall volcano \/  Grindav\u00edk dyke intrusion&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,10,204,71,9,349,64,40,42,23,57,32,205],"tags":[],"class_list":["post-11903","post","type-post","status-publish","format-standard","hentry","category-dyke-intrusions","category-earthquakes","category-fagradalsfjall","category-fissures","category-harmonic-tremors","category-kalffellsheidi","category-magma","category-monitoring","category-reykjanes","category-reykjanes-ridge","category-swarm","category-volcano","category-thorbjorn"],"_links":{"self":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts\/11903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11903"}],"version-history":[{"count":8,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts\/11903\/revisions"}],"predecessor-version":[{"id":11913,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts\/11903\/revisions\/11913"}],"wp:attachment":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}