{"id":6363,"date":"2016-09-05T01:36:31","date_gmt":"2016-09-05T01:36:31","guid":{"rendered":"http:\/\/icelandgeology.net\/?p=6363"},"modified":"2016-09-05T01:46:34","modified_gmt":"2016-09-05T01:46:34","slug":"harmonic-tremor-change-close-to-grimsfjall-volcano","status":"publish","type":"post","link":"https:\/\/icelandgeology.net\/?p=6363","title":{"rendered":"Harmonic tremor change close to Gr\u00edmsfjall volcano"},"content":{"rendered":"<p>There seems to be a harmonic tremor pulse or a change around <a href=\"http:\/\/volcano.si.edu\/volcano.cfm?vn=373010\" target=\"_blank\">Gr\u00edmsfjall<\/a> volcano. This might be nothing, but the change appears on several SIL stations around Vatnaj\u00f6kull glacier. The harmonic tremor is strongest on H\u00fasb\u00f3ndi SIL station and J\u00f6kulheimar SIL station. This might be something else then magma, glacier movement or sudden flood are an possibility.<\/p>\n<p><a href=\"http:\/\/icelandgeology.net\/wp-content\/uploads\/2016\/09\/hus.05.09.2016.at_.01.29.utc_.gif\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/icelandgeology.net\/wp-content\/uploads\/2016\/09\/hus.05.09.2016.at_.01.29.utc_.gif\" alt=\"hus.05.09.2016.at.01.29.utc\" width=\"640\" height=\"480\" class=\"aligncenter size-full wp-image-6364\" \/><\/a><br \/>\nH\u00fasb\u00f3ndi SIL station. <em>Copyright of this image belongs to Icelandic Met Office.<\/em><\/p>\n<p><a href=\"http:\/\/icelandgeology.net\/wp-content\/uploads\/2016\/09\/jok.05.09.2016.at_.01.29.utc_.gif\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/icelandgeology.net\/wp-content\/uploads\/2016\/09\/jok.05.09.2016.at_.01.29.utc_.gif\" alt=\"jok.05.09.2016.at.01.29.utc\" width=\"640\" height=\"480\" class=\"aligncenter size-full wp-image-6365\" \/><\/a><br \/>\nJ\u00f6kulheimar SIL station. <em>Copyright of this image belongs to Icelandic Met Office.<\/em><\/p>\n<p>Currently I don&#8217;t know what is creating this change in harmonic tremor. I know it is not weather and this is on too many SIL station to be local noise. The SIL station at Gr\u00edmsfjall volcano doesn&#8217;t show any change, so everything is quiet in that volcano. But this is within Gr\u00edmsfjall volcano fissure swarm that contains the volcano \u00de\u00f3r\u00f0arhyrna, it last erupted in the year 1902 and has been quiet since (information about eruptions in \u00de\u00f3r\u00f0arhyrna volcano can be found under <a href=\"http:\/\/volcano.si.edu\/volcano.cfm?vn=373010\" target=\"_blank\">Gr\u00edmsfjall<\/a> volcano eruption history).<\/p>\n<p>If anything happens I&#8217;ll update this article or post a new one.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>There seems to be a harmonic tremor pulse or a change around Gr\u00edmsfjall volcano. This might be nothing, but the change appears on several SIL stations around Vatnaj\u00f6kull glacier. The harmonic tremor is strongest on H\u00fasb\u00f3ndi SIL station and J\u00f6kulheimar SIL station. This might be something else then magma, glacier movement or sudden flood are &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/icelandgeology.net\/?p=6363\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Harmonic tremor change close to Gr\u00edmsfjall volcano&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,9,40,32,138],"tags":[],"class_list":["post-6363","post","type-post","status-publish","format-standard","hentry","category-grimsvotn-grimsfjall","category-harmonic-tremors","category-monitoring","category-volcano","category-thordarhyrna"],"_links":{"self":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts\/6363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6363"}],"version-history":[{"count":2,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts\/6363\/revisions"}],"predecessor-version":[{"id":6367,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts\/6363\/revisions\/6367"}],"wp:attachment":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}