{"id":517,"date":"2018-09-08T19:19:43","date_gmt":"2018-09-09T02:19:43","guid":{"rendered":"https:\/\/ag6qr.net\/?p=517"},"modified":"2018-09-09T13:39:09","modified_gmt":"2018-09-09T20:39:09","slug":"first-week-of-earthquake-monitoring","status":"publish","type":"post","link":"https:\/\/ag6qr.net\/index.php\/2018\/09\/08\/first-week-of-earthquake-monitoring\/","title":{"rendered":"First week of earthquake monitoring"},"content":{"rendered":"\n<p>The <a href=\"https:\/\/raspberryshake.org\">Raspberry Shake<\/a> has some nice software available with it. \u00a0 \u00a0One of the nicest things to start out with is an app available for Android phones called &#8220;<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=de.gempa.android.eqinfo&amp;hl=en_US\">EQInfo<\/a>&#8220;. \u00a0It provides a list of recent earthquakes, as detected by various monitoring agencies. \u00a0You can click on a quake, and see a seismometer&#8217;s trace of the event. \u00a0By default, it will show the trace from whatever Raspberry shake is nearest the event, but you can easily change the settings to show the event as recorded by your own Raspberry Shake.<\/p>\n\n\n\n<p>Here are some of the more obvious earthquakes detected during my first week, as seen on my own Raspberry Shake, ordered from nearest to farthest. \u00a0Note that none of these events were perceptible by humans at my location.<\/p>\n\n\n\n<ul class=\"wp-block-gallery columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1920\" src=\"https:\/\/ag6qr.net\/wp-content\/uploads\/2018\/09\/Screenshot_20180908-183216.png\" alt=\"\" data-id=\"528\" data-link=\"https:\/\/ag6qr.net\/?attachment_id=528#main\" class=\"wp-image-528\"\/><figcaption>M1.8, 17km<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1920\" src=\"https:\/\/ag6qr.net\/wp-content\/uploads\/2018\/09\/Screenshot_20180908-183258.png\" alt=\"\" data-id=\"527\" data-link=\"https:\/\/ag6qr.net\/?attachment_id=527#main\" class=\"wp-image-527\"\/><figcaption>M3.7, 31km<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1920\" src=\"https:\/\/ag6qr.net\/wp-content\/uploads\/2018\/09\/Screenshot_20180908-183110.png\" alt=\"\" data-id=\"530\" data-link=\"https:\/\/ag6qr.net\/?attachment_id=530#main\" class=\"wp-image-530\"\/><figcaption>M2.8, 37km<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1920\" src=\"https:\/\/ag6qr.net\/wp-content\/uploads\/2018\/09\/Screenshot_20180905-125936.png\" alt=\"\" data-id=\"522\" data-link=\"https:\/\/ag6qr.net\/?attachment_id=522#main\" class=\"wp-image-522\"\/><figcaption>M2.2, 38km<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1920\" src=\"https:\/\/ag6qr.net\/wp-content\/uploads\/2018\/09\/Screenshot_20180905-125821.png\" alt=\"\" data-id=\"523\" data-link=\"https:\/\/ag6qr.net\/?attachment_id=523#main\" class=\"wp-image-523\"\/><figcaption>M2.8, 87km<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1920\" src=\"https:\/\/ag6qr.net\/wp-content\/uploads\/2018\/09\/Screenshot_20180905-130320.png\" alt=\"\" data-id=\"521\" data-link=\"https:\/\/ag6qr.net\/?attachment_id=521#main\" class=\"wp-image-521\"\/><figcaption>M2.6, 132km<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1920\" src=\"https:\/\/ag6qr.net\/wp-content\/uploads\/2018\/09\/Screenshot_20180906-195453.png\" alt=\"\" data-id=\"518\" data-link=\"https:\/\/ag6qr.net\/?attachment_id=518#main\" class=\"wp-image-518\"\/><figcaption>M6.2, 6327km<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1920\" src=\"https:\/\/ag6qr.net\/wp-content\/uploads\/2018\/09\/Screenshot_20180905-132129.png\" alt=\"\" data-id=\"520\" data-link=\"https:\/\/ag6qr.net\/?attachment_id=520#main\" class=\"wp-image-520\"\/><figcaption>M6.6, 7655km<\/figcaption><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1920\" src=\"https:\/\/ag6qr.net\/wp-content\/uploads\/2018\/09\/Screenshot_20180906-095823.png\" alt=\"\" data-id=\"519\" data-link=\"https:\/\/ag6qr.net\/?attachment_id=519#main\" class=\"wp-image-519\"\/><figcaption>M7.8, 8716km<\/figcaption><\/figure><\/li><\/ul>\n\n\n\n<p>The app puts a blue line with the letter &#8220;P&#8221; at the time when the &#8220;P&#8221; wave, or primary wave, should theoretically have first arrived at my station. \u00a0Actual arrival time may vary somewhat, because the details of the local dirt and rock near my area may vary somewhat from the model used to calculate the theoretical arrival time. \u00a0But as you can see, it&#8217;s pretty close.<\/p>\n\n\n\n<p>The closest quakes appear as one jolt, followed by an approximately exponential decay. \u00a0As the quakes get farther away, \u00a0you can see that the waves separate into two jolts, the &#8220;P&#8221; wave and the &#8220;S&#8221; wave. \u00a0The &#8220;S&#8221; waves are typically a bit stronger than the &#8220;P&#8221; waves.<\/p>\n\n\n\n<p>You don&#8217;t need to purchase a Raspberry Shake to use their software. \u00a0Check it out on their site, and\/or search for <a href=\"https:\/\/play.google.com\/store\/apps\/details?id=de.gempa.android.eqinfo&amp;hl=en_US\">EQInfo<\/a> on the Android App Store. \u00a0You can even alter the settings and claim that you own Raspberry Shake with identifier RF075, to let you see the traces from my seismometer. \u00a0Or you can find a seismometer on the map near your location, and use that one.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Raspberry Shake has some nice software available with it. \u00a0 \u00a0One of the nicest things to start out with is an app available for Android phones called &#8220;EQInfo&#8220;. \u00a0It provides a list of recent earthquakes, as detected by various monitoring agencies. \u00a0You can click on a quake, and see a seismometer&#8217;s trace of the <a class=\"more-link\" href=\"https:\/\/ag6qr.net\/index.php\/2018\/09\/08\/first-week-of-earthquake-monitoring\/\">Read More &#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":521,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,6],"tags":[],"class_list":["post-517","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-computers","category-electronics"],"_links":{"self":[{"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/posts\/517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/comments?post=517"}],"version-history":[{"count":2,"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/posts\/517\/revisions"}],"predecessor-version":[{"id":533,"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/posts\/517\/revisions\/533"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/media\/521"}],"wp:attachment":[{"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/media?parent=517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/categories?post=517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ag6qr.net\/index.php\/wp-json\/wp\/v2\/tags?post=517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}