{"id":36342,"date":"2021-01-21T08:26:17","date_gmt":"2021-01-21T08:26:17","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=36342"},"modified":"2021-01-21T08:26:17","modified_gmt":"2021-01-21T08:26:17","slug":"mount-darwin-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2021\/01\/21\/mount-darwin-1\/","title":{"rendered":"Mount Darwin: another rock avalanche in New Zealand, with a groovy runout pattern"},"content":{"rendered":"<h4>Mount Darwin: another rock avalanche in New Zealand, with a groovy runout pattern<\/h4>\n<p>In the aftermath of the <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2021\/01\/19\/mount-silberhorn-2\/\">interesting rock avalanche on Mount Silberhorn<\/a> in New Zealand, <a href=\"https:\/\/www.gns.cri.nz\/who\/staff\/1930.html\">Simon Cox from GNS Science<\/a> has alerted me to another recent rock avalanche, this time on Mount Darwin.\u00a0 This rock avalanche <a href=\"https:\/\/twitter.com\/ryandick207\/status\/1351491703128137728\">was also noted in a tweet<\/a> by Ryan Dick (<a href=\"https:\/\/twitter.com\/ryandick207\">@ryandick207<\/a>) of the University of Newcastle (the second tweet in the sequence below, <a href=\"https:\/\/twitter.com\/sgascoin\">though the Sentinel-2 images<\/a> posted by Simon Gascoin &#8211; <a href=\"https:\/\/twitter.com\/sgascoin\">@hsgascoin<\/a> &#8211; of the Mount Silberhorn landslide is also rather cool):-<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">Spotted this big one too, at the top of Tasman Gl. Sometime between 11-15 Jan based on Sentinel\/Planet imagery <a href=\"https:\/\/t.co\/qECIpELWjo\">pic.twitter.com\/qECIpELWjo<\/a><\/p>\n<p>&mdash; Ryan Dick (@ryandick207) <a href=\"https:\/\/twitter.com\/ryandick207\/status\/1351491703128137728?ref_src=twsrc%5Etfw\">January 19, 2021<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>The new, much smaller, rock avalanche on Mount Darwin was first spotted by helicopter pilot <a href=\"https:\/\/www.facebook.com\/dave.butson?__tn__=-UC*F\">Dave Butson<\/a>, who has <a href=\"https:\/\/www.facebook.com\/photo\/?fbid=3769270046469142&amp;set=pcb.1104367603405860\">posted a set of images onto his Facebook pag<\/a>e.\u00a0 This one is particularly impressive:-<\/p>\n<div id=\"attachment_36347\" style=\"width: 809px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-36347\" class=\" wp-image-36347\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/01\/21_01-Mount-Darwin-1.jpg\" alt=\"Mount Darwin rock avalanche\" width=\"799\" height=\"502\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/01\/21_01-Mount-Darwin-1.jpg 2112w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/01\/21_01-Mount-Darwin-1-300x188.jpg 300w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/01\/21_01-Mount-Darwin-1-1024x643.jpg 1024w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/01\/21_01-Mount-Darwin-1-768x483.jpg 768w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/01\/21_01-Mount-Darwin-1-1536x965.jpg 1536w, https:\/\/blogs.agu.org\/landslideblog\/files\/2021\/01\/21_01-Mount-Darwin-1-2048x1287.jpg 2048w\" sizes=\"auto, (max-width: 799px) 100vw, 799px\" \/><p id=\"caption-attachment-36347\" class=\"wp-caption-text\">The Mount Darwin rock avalanche. <a href=\"https:\/\/www.facebook.com\/photo\/?fbid=3769270046469142&amp;set=pcb.1104367603405860\">Image posted to Facebook by Dave Butson<\/a>.<\/p><\/div>\n<p>.<\/p>\n<p>The landslide was first spotted on 16 January 2021 at 08:30 local time, so it occurred at some point shortly before then.\u00a0 The location is 43.528\u00b0 170.336 at the head of the Tasman Glacier.<\/p>\n<p>The source of the landslide is high on the slope, just below the ridge.\u00a0 The displaced mass has travelled down a very steep slope\u00a0 before a free fall on a talus slope covered in snow and ice.\u00a0 The runout is particularly interesting, with little evidence of spread.\u00a0 The bifurcation of the slide into a series of long runout fingers is quite unusual.\u00a0 These flows have split and then, in places, coincided. At the very right of the upper part of the flows here is a section with a different texture from the rest, probably involving more snow and ice.\u00a0 I am not sure whether this occurred at a different time to the main event, perhaps soon after.<\/p>\n<p>Simon Cox has pointed out that this is not the first large landslide on Mount Darwin.\u00a0 <a href=\"https:\/\/vml.gns.cri.nz\/assetbank-gns-science\/action\/viewAsset?id=3628&amp;index=0&amp;total=1&amp;view=viewSearchItem\">In the GNS Science photo archive there is an image of a landslide taken in 1983<\/a>, although this one did not have a long runout.<\/p>\n<p>The recent rock avalanche on Mount Darwin is not a large landslide, but it is a very interesting case.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Mount Darwin: another recent rock avalanche in New Zealand, with a groovy runout pattern.<!-- AddThis Advanced Settings generic via filter on wp_trim_excerpt --><!-- AddThis Share Buttons generic via filter on wp_trim_excerpt --><\/p>\n","protected":false},"author":22,"featured_media":36347,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[469,277,7,306],"class_list":["post-36342","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-featured","tag-helicopter","tag-new-zealand","tag-rock-avalanche"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/36342","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=36342"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/36342\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/36347"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=36342"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=36342"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=36342"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}