{"id":3888,"date":"2011-11-04T07:52:28","date_gmt":"2011-11-04T07:52:28","guid":{"rendered":"http:\/\/blogs.agu.org\/landslideblog\/?p=3888"},"modified":"2011-11-04T07:52:28","modified_gmt":"2011-11-04T07:52:28","slug":"geological-survey-of-india-report-on-landslide-from-the-sikkim-earthquake","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2011\/11\/04\/geological-survey-of-india-report-on-landslide-from-the-sikkim-earthquake\/","title":{"rendered":"Geological Survey of India report on landslide from the Sikkim earthquake"},"content":{"rendered":"<div id=\"attachment_3891\" style=\"width: 650px\" class=\"wp-caption aligncenter\"><a rel=\"attachment wp-att-3891\" href=\"https:\/\/blogs.agu.org\/landslideblog\/2011\/11\/04\/geological-survey-of-india-report-on-landslide-from-the-sikkim-earthquake\/11_11-sikkim-map-1\/\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3891\" class=\"size-full wp-image-3891\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2011\/11\/11_11-Sikkim-map-1.jpg\" alt=\"\" width=\"640\" height=\"679\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2011\/11\/11_11-Sikkim-map-1.jpg 933w, https:\/\/blogs.agu.org\/landslideblog\/files\/2011\/11\/11_11-Sikkim-map-1-282x300.jpg 282w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/a><p id=\"caption-attachment-3891\" class=\"wp-caption-text\">http:\/\/www.portal.gsi.gov.in\/gsiDoc\/pub\/report_portal_final_20102011.pdf<\/p><\/div>\n<p><strong>Summary<\/strong>: A new Geological Survey of India report describes some of the landslides triggered by the September 2011 Sikkim earthquake in India and Nepal<\/p>\n<p>The Geological Survey of India has posted online a\u00a0 (2 MB) <a href=\"http:\/\/www.portal.gsi.gov.in\/gsiDoc\/pub\/report_portal_final_20102011.pdf\">pdf document containing a report<\/a> about <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2011\/09\/26\/photo-album-from-the-himalayan-earthquake\/\">landslides triggered<\/a> by the <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2011\/09\/20\/first-photos-of-the-earthquake-damage-in-sikkim\/\">Sikkim earthquake<\/a>. The report is based upon a field reconnaissance visit undertaken by a group of geologists shortly after the event, and thus inevitably concentrates on those slides that were accessible (i.e. close to roads).\u00a0 In most cases these are the ones that affected the population, so that is not unhelpful.<\/p>\n<p>In total, 210 landslides were noted along 12 road sections.\u00a0 These are mostly rockslides.\u00a0 Interestingly, most were first time failures &#8211; indeed the report notes that existing landslides were not reactivated in most cases.\u00a0 It is also interesting to note that &#8220;a large number of earthquake induced rockslides occur proximal to the crest portions of its steep ridges and in its westward higher slopes, which perhaps indicates the effect of the topographic amplification of earthquake induced ground motion in these steep rocky mountain faces.&#8221;\u00a0 This directionality effect is similar to <a href=\"https:\/\/blogs.agu.org\/landslideblog\/2011\/10\/06\/a-first-look-at-nasa-satellite-imagery-of-the-landslides-from-the-sikkim-earthquake\/\">my observation based on satellite imagery a month or so ago<\/a>. \u00a0 As the report notes, it would be really interesting to map properly the landslide distribution from this earthquake using high resolution imagery.\u00a0 Now that the monsoon has ended it should be possible to gain a good image in the next few months.<\/p>\n<p>It is interesting to note that there is almost no information about landslides triggered by the earthquake in Nepal.<\/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>A new Geological Survey of India report describes some of the landslides triggered by the September 2011 Sikkim earthquake in India and Nepal<!-- 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":3891,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[537,3,1],"tags":[23,469,5,959],"class_list":["post-3888","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-earthquake-induced-landslide","category-landslide-report","category-uncategorized","tag-earthquake","tag-featured","tag-india","tag-landslide-report"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/3888","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=3888"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/3888\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/3891"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=3888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=3888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=3888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}