{"id":2394,"date":"2019-05-09T16:38:53","date_gmt":"2019-05-09T07:38:53","guid":{"rendered":"http:\/\/www.eri.u-tokyo.ac.jp\/en\/?p=2394"},"modified":"2019-05-10T13:25:54","modified_gmt":"2019-05-10T04:25:54","slug":"the-2015-gorkha-earthquake-earthquake-reflection-imaging-of-the-source-fault-and-connecting-seismic-structure-with-fault-slip-behavior","status":"publish","type":"post","link":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/research\/2394\/","title":{"rendered":"The 2015 Gorkha Earthquake: Earthquake Reflection Imaging of the Source Fault and Connecting Seismic Structure With Fault Slip Behavior"},"content":{"rendered":"<p style=\"text-align: center\">Kurashimo, E., Sato, H., Sakai, S., Hirata, N., Gajurel, A. P., Adhikari,D. P., et al. (2019). The 2015 Gorkha earthquake: Earthquake reflection<\/p>\n<p style=\"text-align: center\">imaging of the source fault and connecting seismic structure with fault slip behavior. Geophysical Research Letters, 46, 3206\u20133215.<br \/>\n<a href=\"https:\/\/doi.org\/10.1029\/2018GL081197\">https:\/\/doi.org\/10.1029\/2018GL081197<\/a><\/p>\n<p><strong>Abstract<\/strong><br \/>\nA seismic array observation across the central focal area of the 2015 Gorkha earthquake was conducted to investigate aftershock distribution and crustal structure. Most aftershocks near Kathmandu were located above the Main Himalayan Thrust (MHT). Earthquake reflection imaging revealed the geometry of the MHT, which lies at ~10\u2010km depth at 75\u00a0km away from the Main Frontal Thrust. We found three areas of seismic velocity variability around the MHT above 15\u00a0km depth: (1) a high\u2010Vp\u00a0zone where the MHT changes its dip angle from 5\u00b0 to 13\u00b0, coinciding with a local maximum in coseismic slip, (2) a low\u2010Vpzone showing less coseismic slip, and (3) a high\u2010Vp\u00a0zone where coseismic slip decreased further but afterslip occurred. These differences in slip behavior may indicate changes in frictional properties on the fault, which are reflected in the heterogeneity of the velocity structure.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-2399\" src=\"http:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2019\/05\/Nepal-1-300x233.jpg\" alt=\"\" width=\"300\" height=\"233\" srcset=\"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2019\/05\/Nepal-1-300x233.jpg 300w, https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2019\/05\/Nepal-1-768x598.jpg 768w, https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2019\/05\/Nepal-1-1024x797.jpg 1024w, https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2019\/05\/Nepal-1-1200x934.jpg 1200w, https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2019\/05\/Nepal-1-500x389.jpg 500w\" sizes=\"(max-width: 300px) 85vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kurashimo, E., Sato, H., Sakai, S., Hirata, N., Gajurel, A. P., Adhikari,D. P., et al. (2019). The 2015 Gorkha &hellip; <a href=\"https:\/\/www.eri.u-tokyo.ac.jp\/en\/research\/2394\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;The 2015 Gorkha Earthquake: Earthquake Reflection Imaging of the Source Fault and Connecting Seismic Structure With Fault Slip Behavior&#8221;<\/span><\/a><\/p>\n","protected":false},"author":9,"featured_media":2399,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-2394","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research"],"_links":{"self":[{"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts\/2394"}],"collection":[{"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/comments?post=2394"}],"version-history":[{"count":3,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts\/2394\/revisions"}],"predecessor-version":[{"id":2401,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts\/2394\/revisions\/2401"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/media\/2399"}],"wp:attachment":[{"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/media?parent=2394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/categories?post=2394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/tags?post=2394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}