{"id":33996,"date":"2020-05-19T06:45:36","date_gmt":"2020-05-19T06:45:36","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=33996"},"modified":"2020-05-19T07:20:07","modified_gmt":"2020-05-19T07:20:07","slug":"yudi-peak-landslide-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2020\/05\/19\/yudi-peak-landslide-1\/","title":{"rendered":"A long run out landslide from Yudi Peak in Alaska"},"content":{"rendered":"

A long run out landslide from Yudi Peak in Alaska<\/h4>\n

With thanks from me to loyal reader Hig for pointing it out, the Facebook page of Alpine Air Alaska<\/a> has some stunning photographs<\/a>, and a very cool video<\/a>, of a long run out landslide that has recently occurred on Yudi Peak, near to Girdwood in Alaska.\u00a0 This is one of their images:-<\/p>\n

\"Yudi

The upper reaches of the landslide from Yudi Peak in Alaska. Image from the Facebook Page of Alpine Air Alaska.<\/a><\/p><\/div>\n

.<\/p>\n

The crown of the Yudi Peak landslide is located at 61.03, -148.96 at an elevation of about 1430 m. It has a run out distance of about 2 km, stopping at an elevation of about 1009 m. This image, also posted to the Facebook Page of Alpine Air Alaska<\/a>, shows the full length of the landslide:-<\/p>\n

\"Yudi

The full extent of the landslide from Yudi Peak in Alaska. Image from the Facebook Page of Alpine Air Alaska.<\/a><\/p><\/div>\n

.<\/p>\n

From the images, that landslide appears to have initiated as a wedge failure.\u00a0 The volume is not very large. but the terrain is steep and the initial sliding surface was snow and ice, providing a high level of mobility.\u00a0 There may have been some entrainment once the landslide reached the bedrock areas. The best view of the landslide is on a video that Alpine Air Alaska have flown of the full length of slide<\/a>.\u00a0 It is very rare to have such good coverage of the full track of a slide.<\/p>\n

The landslide is first visible on satellite imagery on 10 May 2020. It is not visible on an image on 6 May 2020, so it occurred sometime in that window.<\/p>\n

It is well established that Alaska sees large landslides in the Spring, and that their increasing size and frequency is driven by global heating<\/a>.<\/p>\n

.<\/p>\n

On reflection 1: landslide threat from Cyclone Amphan<\/h4>\n

Cyclone Amphan is now an extremely dangerous tropical cyclone, tracking northwards to make landfall, probably in West Bengal, tomorrow<\/a>.\u00a0 Whilst it will weaken a little in the next 24 hours, it has the potential to cause very substantial levels of damage, compounded of course by the increased vulnerability of the population as a result of Covid-19. This storm will bring extreme rainfall to the hilly areas of Bangladesh, NE India and possibly E. Bhutan.\u00a0 The potential for severe landslides and floods is high.<\/p>\n

The ever wonderful Save the Hills blog<\/a>, which features community efforts to manage landslides in the Kalimpong area on NE India, is likely to feature some of the impacts.\u00a0 I await the outcome of this storm with some trepidation – expect news of landslides towards the end of the week.<\/p>\n

.<\/p>\n

On reflection 2: landslides from a Mw=5.2 earthquake in China<\/h4>\n

At 13:48 UTC a Mw=5.2 earthquake struck Qiaojia County in Yunnan Province, China<\/a>. Xinhua reports four fatalities so far, and at least some landslide impacts<\/a>:<\/p>\n

Xinhua reporters on Tuesday morning saw rescuers approaching Yakou Village, Xiaohe Township in the epicenter of Qiaojia. Excavators are removing debris of landslides along the road.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Helicopter company Alpine Air Alaska has posted to Facebook stunning images and a video of a long run out landslide from Yudi Peak in Alaska<\/p>\n","protected":false},"author":22,"featured_media":33999,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[340,469,619,725,136,766,48,35,29879],"class_list":["post-33996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-alaska","tag-featured","tag-glacier","tag-north-america","tag-rockslide","tag-snow","tag-usa","tag-video","tag-wedge-failure"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/33996","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=33996"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/33996\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/33999"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=33996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=33996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=33996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}