{"id":42062,"date":"2022-11-07T07:31:44","date_gmt":"2022-11-07T07:31:44","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=42062"},"modified":"2022-11-07T07:31:44","modified_gmt":"2022-11-07T07:31:44","slug":"dima-hasao-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2022\/11\/07\/dima-hasao-1\/","title":{"rendered":"The May 2022 landslide cluster at Dima Hasao district in Assam, India"},"content":{"rendered":"

The May 2022 landslide cluster at Dima Hasao district in Assam, India<\/h4>\n

In the period between 11 and 18 May 2022 Dima Hasao district in Assam, India was badly affected by a period of exceptional early monsoon rainfall.\u00a0 The impact of multiple landslides was widely reported<\/a>, including some remarkable images of the burial of trains at New Haflong railway station.\u00a0 Nezine has an excellent set of images of the aftermath by Anup Biswas<\/a>:-<\/p>\n

\"Trains

Trains buried by landslides at New Haflong station on 14 May 2022. Image by Anup Biswas via nezine.com<\/a>.<\/em><\/p><\/div>\n

.<\/p>\n

An article just published in the journal Landslides (Roy et al.<\/em> 2022<\/a>) provides a very useful initial analysis of this event.\u00a0 The authors have used satellite imagery to map the landslides.\u00a0 In total they have identified 5,178 landslides triggered by this rainfall event.\u00a0 This is their map of this remarkable landslide cluster:-<\/p>\n

\"The

The distribution of landslides triggered by heavy rainfall in May 2022 in the Dima Hsao district of India, together with landslides from 2014 and 2017. Map by Roy et al. (2022)<\/a>.<\/em><\/p><\/div>\n

.<\/p>\n

New Haflong Station is located at 25.147, 93.033.\u00a0 The rainfall event that triggered the landslides is quite interesting.\u00a0 In May 2022 Dima Hasao district received 540 mm of rainfall, based on satellite data analysis by Roy et al.<\/em> (2022)<\/a>, including 156 mm on 11 May.\u00a0 The map above shows remarkable clustering of landslides, implying that this area suffered particularly intense precipitation that might not have been captured by the satellite data.<\/p>\n

At New Haflong Station itself, Roy et al.<\/em> (2022)<\/a> have identified multiple landslides on the valley walls that coalesced to form channelised debris flows.\u00a0 Their simulations indicate peak flow velocities of 42 m\/sec and simulated maximum flow depths of about 8 metres.\u00a0 These are exceptionally high values.<\/p>\n

There is clearly an urgent need to address the vulnerability of New Haflong Station to landslides.<\/p>\n

.<\/p>\n

Reference<\/h4>\n

Roy, P., Martha, T.R., Vinod Kumar, K.\u00a0et al.<\/i> 2022. Cluster landslides and associated damage in the Dima Hasao district of Assam, India due to heavy rainfall in May 2022<\/a>. Landslides<\/i>. https:\/\/doi.org\/10.1007\/s10346-022-01977-6<\/p>\n","protected":false},"excerpt":{"rendered":"

In May 2022 heavy rainfall triggered many landslides at Dima Hasao district in Assam, India. In a new paper in the journal Landslides, Roy et al. (2022) have mapped >5000 individual slides in this event.<\/p>\n","protected":false},"author":22,"featured_media":42065,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[30718,469,5,80,17,788,72,30717],"class_list":["post-42062","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","tag-assam","tag-featured","tag-india","tag-railway","tag-research","tag-review-of-a-paper-2","tag-south-asia","tag-trains"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/42062","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=42062"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/42062\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/42065"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=42062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=42062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=42062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}