{"id":1892,"date":"2014-05-15T09:27:11","date_gmt":"2014-05-15T17:27:11","guid":{"rendered":"http:\/\/earthjay.com\/?p=1892"},"modified":"2014-05-15T09:27:11","modified_gmt":"2014-05-15T17:27:11","slug":"panama-aftershocks-reveal-likely-fault-solution","status":"publish","type":"post","link":"https:\/\/earthjay.com\/?p=1892","title":{"rendered":"Panama Aftershocks Reveal Likely Fault Solution"},"content":{"rendered":"<p>All rightee&#8230; We have a number of aftershocks that are lighting up the potential fault that ruptured a couple days ago. Here is <a href=\"http:\/\/earthjay.com\/?p=1871\">my page<\/a> for this earthquake. Here is the <a href=\"http:\/\/earthquake.usgs.gov\/earthquakes\/eventpage\/usb000qk64#summary\" target=\"_blank\" rel=\"noopener\">USGS page<\/a>.<br \/>\nThe aftershocks are aligned with the north-south transform fault system (named the Colba Ridge) that separates the Cocos plate to the West and the Nazca plate to the East. Here is the local map with historic epicenters in gray and the mainshock and aftershock epicenters plotted as orange circles. Note that many of the historic epicenters also align along this fracture zone.<br \/>\n<a href=\"http:\/\/earthjay.com\/earthquakes\/20140513_panama\/20140513_panama_aftershocks_1_local_historic.JPG\" target=\"_blank\" rel=\"noopener\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20140513_panama\/20140513_panama_aftershocks_1_local_historic.JPG\" width=\"100%\" alt=\"\" \/><\/a><br \/>\nHere is a map with only the recent epicenters in orange.<br \/>\n<a href=\"http:\/\/earthjay.com\/earthquakes\/20140513_panama\/20140513_panama_aftershocks_1_local.JPG\" target=\"_blank\" rel=\"noopener\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20140513_panama\/20140513_panama_aftershocks_1_local.JPG\" width=\"100%\" alt=\"\" \/><\/a><br \/>\nHere is an updated moment tensor (Mwb). With these aftershocks, we can better interpret this as rupture on a N-S striking right-lateral fault.<br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20140513_panama\/20140513_panama_moment_tensor_mwb_update.png\" alt=\"\" \/><br \/>\nThere are 5 moment tensors on the <a href=\"http:\/\/earthquake.usgs.gov\/earthquakes\/eventpage\/usb000qk64#scientific_moment-tensor\" target=\"_blank\" rel=\"noopener\">USGS page<\/a>. For those looking for a refresher on focal mechanisms, <a href=\"http:\/\/earthquake.usgs.gov\/learn\/topics\/beachball.php\" target=\"_blank\" rel=\"noopener\">here<\/a> is the USGS page that describes them.<br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20140513_panama\/20140513_panama_moment_tensor_solutions_page_update.png\" width=\"100%\" alt=\"\" \/><br \/>\nHere is the USGS poster that describes the historic seismicity and plate tectonic setting.<br \/>\n<a href=\"http:\/\/earthjay.com\/earthquakes\/20140513_panama\/caribbean_tsum.pdf\" target=\"_blank\" rel=\"noopener\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20140513_panama\/caribbean_tsum.jpg\" width=\"100%\" alt=\"\" \/><\/a><br \/>\n<a href=\"http:\/\/pubs.usgs.gov\/of\/2010\/1083\/a\/\" target=\"_blank\" rel=\"noopener\">Here<\/a> is a more comprehensive view of the local and regional tectonics in this region. This is a compilation by Harley M. Benz and others.<br \/>\n<a href=\"http:\/\/earthjay.com\/earthquakes\/20140513_panama\/OF10_1083_A.pdf\" target=\"_blank\" rel=\"noopener\"><br \/>\n<img decoding=\"async\" src=\"http:\/\/earthjay.com\/earthquakes\/20140513_panama\/OF10_1083_A.jpg\" width=\"100%\" alt=\"\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"entry-summary\">\nAll rightee&#8230; We have a number of aftershocks that are lighting up the potential fault that ruptured a couple days ago. Here is my page for this earthquake. Here is the USGS page. The aftershocks are aligned with the north-south&hellip;\n<\/div>\n<div class=\"link-more\"><a href=\"https:\/\/earthjay.com\/?p=1892\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &ldquo;Panama Aftershocks Reveal Likely Fault Solution&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":[50,5,6,7,27,29],"tags":[],"aioseo_notices":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts\/1892"}],"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=1892"}],"version-history":[{"count":0,"href":"https:\/\/earthjay.com\/index.php?rest_route=\/wp\/v2\/posts\/1892\/revisions"}],"wp:attachment":[{"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/earthjay.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}