{"id":649,"date":"2013-07-05T13:19:02","date_gmt":"2013-07-05T21:19:02","guid":{"rendered":"http:\/\/earthjay.com\/?p=649"},"modified":"2013-07-05T13:19:02","modified_gmt":"2013-07-05T21:19:02","slug":"m-4-7-earthquake-along-lake-toba-sumatera","status":"publish","type":"post","link":"https:\/\/earthjay.com\/?p=649","title":{"rendered":"M 4.7 Earthquake along Lake Toba, Sumatera"},"content":{"rendered":"<p>There was a M=4.7 earthquake today in central Sumatra along the Sumatra fault system. Interesting that it is following the 6.1 further to the north just a few days ago. in the map below, the earthquakes associated with the M 6.1 are in yellow. today&#8217;s earthquake is in orange. Possibly triggered from the earlier earthquakes, though these are distanced by ~300 km (so seems less likely, depending upon the state of stress on the fault(s).<br \/>\nToday&#8217;s earthquake is aligned on the western edge of Lake Toba formed in the caldera left behind from the largest volcanic eruption on earth during the Quaternary period (~1.8 Ma until the present). This volcanic center is aligned with fracture zones located in the subducting India-Australia plate (eg the Investigator fracture zone).<br \/>\nhere is the <a href=\"http:\/\/earthquake.usgs.gov\/earthquakes\/eventpage\/usb000i7a0#summary\" target=\"new\" rel=\"noopener\"> USGS web page<\/a> for this earthquake. There is a write up about the tectonics of the region. They also have a map, view it with a grain of salt.<br \/>\n<a href=\"http:\/\/earthjay.com\/earthquakes\/20130705_sumatra\/lake_toba_20130705_1400.PNG\" target=\"new\" rel=\"noopener\"><img decoding=\"async\" alt=\"M=6.1 Sumatra\" src=\"http:\/\/earthjay.com\/earthquakes\/20130705_sumatra\/lake_toba_20130705_1400.PNG\" width=\"100%\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\">\nThere was a M=4.7 earthquake today in central Sumatra along the Sumatra fault system. Interesting that it is following the 6.1 further to the north just a few days ago. in the map below, the earthquakes associated with the M&hellip;\n<\/div>\n<div class=\"link-more\"><a href=\"https:\/\/earthjay.com\/?p=649\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &ldquo;M 4.7 Earthquake along Lake Toba, Sumatera&rdquo;<\/span>&hellip;<\/a><\/div>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[1],"tags":[],"aioseo_notices":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts\/649"}],"collection":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=649"}],"version-history":[{"count":0,"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts\/649\/revisions"}],"wp:attachment":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}