{"id":162,"date":"2013-04-15T00:00:10","date_gmt":"2013-04-14T15:00:10","guid":{"rendered":"http:\/\/www.eri.u-tokyo.ac.jp\/_html\/en\/?p=162"},"modified":"2016-04-14T14:33:07","modified_gmt":"2016-04-14T05:33:07","slug":"2013-april-13th-earthquake-in-awaji-island-area","status":"publish","type":"post","link":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/eq\/162\/","title":{"rendered":"2013 April 13th Earthquake in Awaji Island area"},"content":{"rendered":"<div>\n<p>Launched:April 15th, 2013<\/p>\n<p>Last updated:April 16th,2013<\/p>\n<p><a href=\"http:\/\/outreach.eri.u-tokyo.ac.jp\/20130413awaji\/\">Japanese<\/a><\/p>\n<p>An earthquake with magnitude 6.3 occurred at Awaji Island area (located in southwest Japan) on 13th April, 05:33 JST.<\/p>\n<p>\uff3bNote: Research\/analysis outcomes gained by individual researchers in our institute will be posted on this website. All information publicized here do not indicate any official opinion as the Earthquake Research Institute.\uff3d<\/p>\n<hr \/>\n<p><strong>[Basic Information\uff3d(JMA)<\/strong><\/p>\n<ul>\n<li>Location of hypocenter: Latitude 34.4N, Longitude 134.8E,<\/li>\n<li>\u00a010km depth<\/li>\n<li>Magnitude: 6.3<\/li>\n<\/ul>\n<hr \/>\n<p><strong>Temporary Observation of the aftershocks<\/strong><\/p>\n<p>In order to clarify the earthquake plain fault, aftershock distribution and focal mechanism solution, we launched a temporary aftershock observation together with DPRI, Kyushu University and Kochi University.<\/p>\n<p>(Associate prof. Shinichi Sakai)<\/p>\n<p><a href=\"http:\/\/www.eri.u-tokyo.ac.jp\/old\/wp-content\/outreach-old\/uploads\/2013\/04\/Fig01c1.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"Fig01c\" alt=\"\" src=\"http:\/\/www.eri.u-tokyo.ac.jp\/old\/wp-content\/outreach-old\/uploads\/2013\/04\/Fig01c1-320x420.jpg\" width=\"320\" height=\"420\" \/><\/a><\/p>\n<p>Fig.1 Temporary observation sites and aftershocks (top)and cross-sectional diagram of its depth<br \/>\n(bottom left: east-west, bottom right: north-south)<br \/>\nRed star: main shock, White circle: aftershocks,\u00a0\u25a0:Temporary off-line observation sites(DPRI),\u00a0\u25b2:Telemeter observation sites(Tsuna:JMA),\u00a0\u25a0\u00a0: Temporary telemeter observation sites (Eisaki:Kyushu.Univ.),\u00a0\u25a0: Temporary telemeter observation sites(Goshiki:ERI),\u00a0\u25a0: Temporary off-line observation sites (Kochi.Univ).<br \/>\nAftershocks distributes around 10 to 15km depth, in direction of NNW-SSE, on a plain of high-angle westerly dip.<br \/>\nThis distribution corresponds to one of the earthquake fault surface expected from the focal mechanism solution.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/www.eri.u-tokyo.ac.jp\/old\/wp-content\/outreach-old\/uploads\/2013\/04\/Fig02.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"Fig02\" alt=\"\" src=\"http:\/\/www.eri.u-tokyo.ac.jp\/old\/wp-content\/outreach-old\/uploads\/2013\/04\/Fig02-640x272.jpg\" width=\"640\" height=\"272\" \/><\/a><\/p>\n<p>Fig.2 The hypocenter (right) and aftershock distribution after the earthquake in the southern Hyogo pref. (left)<br \/>\nThis time, the earthquake occurred at the southern edge of the aftershock distribution derived by the joint-observation of the aftershocks of Southern Hyogo earthquake (27th January to 9th April).<br \/>\nIt is located slightly on the South East, and not in the line of the fault plain of the earthquake of southern Hyogo.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p><strong>Moment Tensor Solution derived by W-phase Source Inversion<\/strong><\/p>\n<p>Following is the Moment Tensor Solution derived by W-phase Source Inversion using waveform data recorded in regional scale. This method is developed by Kanamori and Rivera (2008).<\/p>\n<p>(Associate prof.Hiroshi Tsuruoka)<\/p>\n<p><a href=\"http:\/\/www.eri.u-tokyo.ac.jp\/old\/wp-content\/outreach-old\/uploads\/2013\/04\/mec1.png\"><img loading=\"lazy\" decoding=\"async\" title=\"mec\" alt=\"\" src=\"http:\/\/www.eri.u-tokyo.ac.jp\/old\/wp-content\/outreach-old\/uploads\/2013\/04\/mec1-324x420.png\" width=\"324\" height=\"420\" \/><\/a><\/p>\n<p><a href=\"http:\/\/www.eri.u-tokyo.ac.jp\/old\/wp-content\/outreach-old\/uploads\/2013\/04\/wp-0.png\"><img loading=\"lazy\" decoding=\"async\" title=\"wp-0\" alt=\"\" src=\"http:\/\/www.eri.u-tokyo.ac.jp\/old\/wp-content\/outreach-old\/uploads\/2013\/04\/wp-0-594x420.png\" width=\"594\" height=\"420\" \/><\/a><\/p>\n<hr \/>\n<p><strong>Waveform recorded in the Earthquake Data Sharing system<\/strong><\/p>\n<p>In the Center for Geophysical Observation and Instrumentation, ERI, we provide earthquake data observed in the Kanto and Koshinetsu area, Kii\u00a0peninsula and surrounding area and the western Seto Inland sea as a regional center of observational research for earthquake prediction.<\/p>\n<p>(Center for Geophysical Observation and Instrumentation)<\/p>\n<p><a href=\"http:\/\/www.eri.u-tokyo.ac.jp\/old\/wp-content\/outreach-old\/uploads\/2013\/04\/130413_053324.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"130413_053324\" alt=\"\" src=\"http:\/\/www.eri.u-tokyo.ac.jp\/old\/wp-content\/outreach-old\/uploads\/2013\/04\/130413_053324-242x420.jpg\" width=\"242\" height=\"420\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Launched:April 15th, 2013 Last updated:April 16th,2013 Japanese An earthquake with magnitude 6.3 occurred at A &hellip; <a href=\"https:\/\/www.eri.u-tokyo.ac.jp\/en\/eq\/162\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;2013 April 13th Earthquake in Awaji Island area&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-162","post","type-post","status-publish","format-standard","hentry","category-eq"],"_links":{"self":[{"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts\/162"}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/comments?post=162"}],"version-history":[{"count":1,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts\/162\/revisions"}],"predecessor-version":[{"id":163,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/posts\/162\/revisions\/163"}],"wp:attachment":[{"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/media?parent=162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/categories?post=162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.eri.u-tokyo.ac.jp\/en\/wp-json\/wp\/v2\/tags?post=162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}