{"id":39384,"date":"2021-10-25T06:35:05","date_gmt":"2021-10-25T06:35:05","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=39384"},"modified":"2021-10-25T06:35:05","modified_gmt":"2021-10-25T06:35:05","slug":"pyuthan-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2021\/10\/25\/pyuthan-1\/","title":{"rendered":"A rockslide video from Pyuthan in Nepal"},"content":{"rendered":"

A rockslide video from Pyuthan in Nepal<\/h4>\n

The heavy rainfall last week in Nepal and India caused widespread damage including many landslides<\/a>.\u00a0 Interestingly, as I type an atmospheric river event is affecting the West Coast of the USA, also with reports of of landslides<\/a>.\u00a0 It will be interesting to see what the effects of that event will be, especially in areas affected by recent wildfires.<\/p>\n

Pyuthan is a hill district located to the west of Nepal.\u00a0 A video emerged over the weekend of a very interesting landslide in Pyuthan, apparently triggered in this event (although this remains to be verified).\u00a0 This video was originally posted onto Tiktok by aashishsenchury10<\/a>, but it has also been posted onto Twitter<\/a>:-<\/p>\n

https:\/\/twitter.com\/sanjeevdevs\/status\/1451906525996347395<\/p>\n

.<\/p>\n

Unfortunately there is little information that I can find about the location of this dramatic failure.\u00a0 However, there are a few things to note.\u00a0 First it appears to be a wedge failure in bedrock.\u00a0 The post failure images show that the sliding was controlled by two very clear, pre-existing discontinuities in the mass.\u00a0 One of these is very clear in the image below, whilst the other is orientated towards the camera:-<\/p>\n

\"The

A very clear discontinuity defining the block that slid in the Pyuthan rockslide. Still from a video posted to Tiktok by aashishsenchury10.<\/a><\/p><\/div>\n

.<\/p>\n

Second, there is landslide debris between the houses and the rockslide, indicating that this was not the first failure in this area.\u00a0 The age of this debris is not clear.<\/p>\n

Third, immediately below the slope there is a road. I can only speculate on whether the construction of the road has been a factor in destabilising the slope.\u00a0 That is a factor that is common in many slope failures in rural Nepal.<\/p>\n

And finally, perhaps most worryingly, some versions of this video (for example this one on Twitter) end with a view of the setting of the houses in the foreground:<\/p>\n

\"The

The setting of the houses in the foreground of the Phyuthan landslide. Still from a video posted to Tiktok by aashishsenchury10.<\/a><\/p><\/div>\n

.<\/p>\n

This appears to show that the houses have been built adjacent to a very high, unsupported cut slope in colluvium.\u00a0 That does not appear to be a safe situation.<\/p>\n","protected":false},"excerpt":{"rendered":"

Heavy rainfall in Nepal has triggered a large rockslide, captured on video, in Pyuthan, Nepal. The video shows a rapid, wedge-type of failure.<\/p>\n","protected":false},"author":22,"featured_media":39387,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[469,963,66,136,72,1170],"class_list":["post-39384","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-featured","tag-landslide-video","tag-nepal","tag-rockslide","tag-south-asia","tag-wedge"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/39384","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=39384"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/39384\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/39387"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=39384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=39384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=39384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}