{"id":27941,"date":"2018-06-15T06:33:49","date_gmt":"2018-06-15T06:33:49","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=27941"},"modified":"2018-06-15T06:33:49","modified_gmt":"2018-06-15T06:33:49","slug":"kilauea-volcano-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2018\/06\/15\/kilauea-volcano-1\/","title":{"rendered":"Kilauea volcano: large-scale slumping on the rim of Halema\u2018uma\u2018u crater"},"content":{"rendered":"

Kilauea volcano: large-scale slumping on the rim of Halema\u2018uma\u2018u crater<\/a><\/h4>\n

The ongoing major eruptive event at Kilauea volcano in Hawaii<\/a> has generated a wide range of spectacular videos and extensive news coverage.\u00a0 At the summit of Kilauea is the large Halema\u2018uma\u2018u crater<\/a>, which has been undergoing major morphological changes in response to recent events.\u00a0 Most importantly, a little more than a month ago the lava lake that had occupied this space drained down.\u00a0 In response, the walls of the crater have undergone large-scale slumping.\u00a0 Volcanic landslides are well-documented<\/a>, but rarely in this level of detail.<\/p>\n

The USGS has a page that provides their latest photographs and videos of the Kilauea eruptive event<\/a>, which includes remarkable imagery of these slumps.\u00a0 For example, this image<\/a> shows the sequential curved tension cracks that mark the back of a series of large slumped blocks:-<\/p>\n

\"K\u012blauea\"

Cracking and slumping of the Halema\u2018uma\u2018u crater walls are clearly evident in this aerial view captured during HVO’s overflight of K\u012blauea’s summit on 9th June 2018. Image from the USGS<\/a>.<\/p><\/div>\n

.<\/p>\n

Whilst the image below<\/a> gives a wider perspective view of this slumping process.\u00a0 In some cases the slumped blocks have deformed by over 100 metres:-<\/p>\n

\"Kilauea\"

Slumped blocks at the Halema\u2018uma\u2018u crater. Image via the USGS<\/a>, collected on 12th June 2018.<\/p><\/div>\n

.<\/p>\n

There is a wonderful drone video<\/a>, collected this week, that provides a panoramic overview of the deformation.<\/p>\n

This is a textbook case of slumping in response to changes in the local stress state.\u00a0 We see successive slump blocks like this in conventional landslides too, though rarely with such clarity.\u00a0 A very interesting element of this is the lack of rotation in the blocks, none of which appear to be backtilted.\u00a0 I wonder if this is because of the circular planform of the blocks (whereas in non-volcanic landslides they tend to have a more linear planform).\u00a0 Presumably this circular shape inhibits the development of rotation.<\/p>\n

The USGS have been monitoring the development of these slumps at Kilauea, \u00a0so in due course there should be some fantastic data on the ways in which these landslides evolve.<\/p>\n","protected":false},"excerpt":{"rendered":"

As a part of the ongoing eruption at Kilauea volcano in Hawaii large-scale slumping is occurring around the margins of Halema\u2018uma\u2018u crater. This is perhaps the finest example of non-rotational slumping that I have ever seen.<\/p>\n","protected":false},"author":22,"featured_media":27944,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[479,469,15378,48,33,107],"class_list":["post-27941","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-eruption","tag-featured","tag-hawaii","tag-usa","tag-volcanic-landslide","tag-volcano"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/27941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/comments?post=27941"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/27941\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/27944"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=27941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=27941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=27941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}