{"id":32280,"date":"2019-09-25T06:21:29","date_gmt":"2019-09-25T06:21:29","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=32280"},"modified":"2019-09-25T08:41:48","modified_gmt":"2019-09-25T08:41:48","slug":"mirpur-earthquake-1","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2019\/09\/25\/mirpur-earthquake-1\/","title":{"rendered":"The Mirpur earthquake in Pakistan: images of lateral spreading"},"content":{"rendered":"

The Mirpur earthquake in Pakistan: images of lateral spreading<\/h4>\n

On 24th September 2019 an M=5.6 earthquake struck Mirpur<\/a> in NW Pakistan<\/a>. Whilst the Mirpur earthquake was comparatively small, it was also shallow, meaning that a significant area will have suffered high peak ground accelerations.\u00a0 The USGS has generated a map of earthquake intensity (the contours on the map), enhanced by the shading, which shows areas of liquefaction potential:-<\/p>\n

\"Mirpur

A map of earthquake intensity and liquefaction potential for the 24th September 2019 M=5.6 Mirpur earthquake in Pakistan. Map via the USGS<\/a>.<\/p><\/div>\n

.<\/p>\n

At the time of writing, over 30 people have been reported to have been killed, whilst at least 450 people were injured.\u00a0 Interestingly, the area with the highest intensity of shaking coincides with both the banks of the major Jhelum River and the margins of\u00a0 part of the huge Mangla reservoir<\/a>:-<\/p>\n

\"Mirpur

A map of earthquake PGA and liquefaction potential for the 24th September 2019 M=5.6 Mirpur earthquake in Pakistan. Map via the USGS.<\/a><\/p><\/div>\n

.<\/p>\n

Thus, whilst this earthquake is not large, it has the potential to generate both liquefaction<\/a> and lateral spreading<\/a>.\u00a0 Early images coming out of Pakistan show that the earthquake has had just this effect.\u00a0 For example, this image (from the Independent<\/a>), clearly shows lateral spreading on the banks of the river.\u00a0 Note that the material appears to be made ground:-<\/p>\n

\"Mirpur

Lateral spreading from the Mirpur Earthquake in Pakistan. Image via the Independent<\/a>.<\/p><\/div>\n

.<\/p>\n

Whilst this image, also from the Independent, also appears to show this area of lateral spreading:-<\/p>\n

\"Lateral

Lateral spreading from the Mirpur Earthquake in Pakistan. Image via the Independent<\/a>.<\/p><\/div>\n

.<\/p>\n

As usual, it is difficult at the moment to ascertain the full extent of these types of impacts – this should become apparent in the days ahead.\u00a0 It will also be interesting to find out the proportion of the building collapses that are associated with these lateral spread events, rather than simple structural failure under high peak ground accelerations.<\/p>\n","protected":false},"excerpt":{"rendered":"

The 24th September 2019 M=5.6 Mirpur earthquake in NW Pakistan appears to have generated some large lateral spreads along the banks of the Jhelum River. <\/p>\n","protected":false},"author":22,"featured_media":32290,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[537],"tags":[23,469,159,27348,10,72],"class_list":["post-32280","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-earthquake-induced-landslide","tag-earthquake","tag-featured","tag-lateral-spread","tag-liqufaction","tag-pakistan","tag-south-asia"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/32280","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=32280"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/32280\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/32290"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=32280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=32280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=32280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}