{"id":845,"date":"2014-06-24T11:47:22","date_gmt":"2014-06-24T09:47:22","guid":{"rendered":"http:\/\/f5len.org\/blog\/?p=845"},"modified":"2014-06-24T18:24:35","modified_gmt":"2014-06-24T16:24:35","slug":"rat-island-aleoutiennes-79","status":"publish","type":"post","link":"https:\/\/f5len.org\/blog\/rat-island-aleoutiennes-79\/","title":{"rendered":"Rat island &#8211; Aleoutiennes 7,9"},"content":{"rendered":"<p>\u00a0<a href=\"http:\/\/f5len.org\/blog\/wp-content\/uploads\/2014\/06\/20140623_rat_island_.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-851\" src=\"http:\/\/f5len.org\/blog\/wp-content\/uploads\/2014\/06\/20140623_rat_island_.png\" alt=\"20140623_rat_island_\" width=\"220\" height=\"220\" srcset=\"https:\/\/f5len.org\/blog\/wp-content\/uploads\/2014\/06\/20140623_rat_island_.png 220w, https:\/\/f5len.org\/blog\/wp-content\/uploads\/2014\/06\/20140623_rat_island_-150x150.png 150w\" sizes=\"auto, (max-width: 220px) 100vw, 220px\" \/><\/a>Magnitude: Mw 7.9<br \/>Region: RAT ISLANDS, ALEUTIAN ISLANDS<br \/>Date heure \u00e9picentre: <br \/>2014-06-23 20:53:09.00 UTC<br \/>Localisation: Lat 51.8600, Lon 178.7500<br \/>Profondeur: 100.0 km<br \/>Distance: ~ 8850 km (79.57 deg)<br \/>Azimut: 4.63 deg<br \/>Incidence: 85.37 deg<\/p>\n<p>&nbsp;<\/p>\n<p>Un peu de chance pour la remise en route d&rsquo;un des capteurs. Hier en fin d&rsquo;apr\u00e8s midi le Pacifique a trembl\u00e9 du sud au nord. Ca a commenc\u00e9 par un s\u00e9isme de magnitude 7 dans la r\u00e9gion des iles Kermadec au sud de la nouvelle Z\u00e9lande. Situ\u00e9 dans ma zone d&rsquo;ombre le signal est n\u00e9anmoins arriv\u00e9 induisant pas mal de bruit. Il a \u00e9t\u00e9 suivi de plusieurs r\u00e9pliques \u00e0 plus 6.\u00a0<br \/>C&rsquo;est vers 21h qu&rsquo;est r\u00e9\u00e7u un fort signal d&rsquo;un s\u00e9isme en provenance des ils Al\u00e9outiennes. J&rsquo;\u00e9tais entrain de faire quelques essais sur le pr\u00e9-ampli \u00e0 ce moment&#8230; pas de bol.<br \/>Celui-ci est depuis, suivit de nombreuses r\u00e9pliques dans tout le Pacifique.<\/p>\n<p>Le d\u00e9but de l&rsquo;onde P n&rsquo;est pas tr\u00e8s nette \u00e0 cause des ondes S des pr\u00e9c\u00e9dents s\u00e9ismes du Pacifique sud.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/f5len.org\/blog\/wp-content\/uploads\/2014\/06\/20140623_rat_island.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-847\" src=\"http:\/\/f5len.org\/blog\/wp-content\/uploads\/2014\/06\/20140623_rat_island.png\" alt=\"20140623_rat_island\" width=\"1024\" height=\"767\" srcset=\"https:\/\/f5len.org\/blog\/wp-content\/uploads\/2014\/06\/20140623_rat_island.png 1024w, https:\/\/f5len.org\/blog\/wp-content\/uploads\/2014\/06\/20140623_rat_island-300x224.png 300w, https:\/\/f5len.org\/blog\/wp-content\/uploads\/2014\/06\/20140623_rat_island-400x300.png 400w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a>Jusqu&rsquo;\u00e0 pr\u00e9sent j&rsquo;utilisais un PC avec un convertisseur A\/N 12 bits. Ca fonctionnait convenablement mais j&rsquo;ai chang\u00e9 le week-end dernier pour un ensemble Raspberry PI moins gourmand en \u00e9nergie et en place que le PC et d&rsquo;un convertisseur A\/N 16 bits ads1115 permettant une fr\u00e9quence d\u2019\u00e9chantillonnage bien plus \u00e9lev\u00e9e.<br \/>Le pr\u00e9-ampli a \u00e9t\u00e9 chang\u00e9 \u00e9galement, j&rsquo;utilise un seul INA 128 et un filtre MAX293 (Fo=1Hz).<\/p>\n<p>Apr\u00e8s quelques manipulations pour porter le signal vers des fr\u00e9quences audibles:\u00a0<a href=\"http:\/\/f5len.org\/blog\/audio\/20140623_rat_island.mp3\">Rat island earthquake sound<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0Magnitude: Mw 7.9Region: RAT ISLANDS, ALEUTIAN ISLANDSDate heure \u00e9picentre: 2014-06-23 20:53:09.00 UTCLocalisation: Lat 51.8600, Lon 178.7500Profondeur: 100.0 kmDistance: ~ 8850 km (79.57 deg)Azimut: 4.63 degIncidence: 85.37 deg &nbsp; Un peu de chance pour la remise en route d&rsquo;un des capteurs. &hellip; <a href=\"https:\/\/f5len.org\/blog\/rat-island-aleoutiennes-79\/\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[141,142,143,144,140],"class_list":["post-845","post","type-post","status-publish","format-standard","hentry","category-sismologie","tag-aleoutiennes","tag-earthquacke","tag-ina-128","tag-max293","tag-rat-island"],"_links":{"self":[{"href":"https:\/\/f5len.org\/blog\/wp-json\/wp\/v2\/posts\/845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/f5len.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/f5len.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/f5len.org\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/f5len.org\/blog\/wp-json\/wp\/v2\/comments?post=845"}],"version-history":[{"count":17,"href":"https:\/\/f5len.org\/blog\/wp-json\/wp\/v2\/posts\/845\/revisions"}],"predecessor-version":[{"id":862,"href":"https:\/\/f5len.org\/blog\/wp-json\/wp\/v2\/posts\/845\/revisions\/862"}],"wp:attachment":[{"href":"https:\/\/f5len.org\/blog\/wp-json\/wp\/v2\/media?parent=845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/f5len.org\/blog\/wp-json\/wp\/v2\/categories?post=845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/f5len.org\/blog\/wp-json\/wp\/v2\/tags?post=845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}