{"id":12178,"date":"2019-09-27T20:50:26","date_gmt":"2019-09-27T20:50:26","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=12178"},"modified":"2019-09-27T20:50:26","modified_gmt":"2019-09-27T20:50:26","slug":"screaming-volcanoes-unraveling-the-mysteries-of-volcanic-noises","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/ro\/science\/earth-science\/screaming-volcanoes-unraveling-the-mysteries-of-volcanic-noises\/","title":{"rendered":"\u021aipetele vulcanilor: Misterul zgomotelor vulcanice"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\u021aipetele vulcanilor: Dezlegarea misterelor din spatele zgomotelor vulcanice<\/h2>\n\n<h2 class=\"wp-block-heading\">Introducere<\/h2>\n\n<p>Vulcanii, gigan\u021bii seme\u021bi ai naturii, sunt adesea asocia\u021bi cu erup\u021bii n\u0103valnice \u0219i lav\u0103 topit\u0103. Cu toate acestea, unii vulcani de\u021bin un secret aparte: ei pot emite sunete stranii, asem\u0103n\u0103toare cu \u0219uieratul unui ceainic \u00eenainte ca o erup\u021bie s\u0103 aib\u0103 loc. Oamenii de \u0219tiin\u021b\u0103 au denumit acest fenomen \u201etremor armonic\u201d.<\/p>\n\n<h2 class=\"wp-block-heading\">Tremori armonice: Precursorul erup\u021biilor<\/h2>\n\n<p>\u00cen 2009, oamenii de \u0219tiin\u021b\u0103 au fost martorii unui eveniment remarcabil la vulcanul Redoubt din Alaska. Au \u00eenregistrat un tremor armonic, un sunet continuu de tonalitate \u00eenalt\u0103, emanat de vulcan \u00eenainte de o erup\u021bie. Aceast\u0103 \u00eenregistrare, condensat\u0103 la 10 secunde, a surprins \u021bip\u0103tul sinistru al vulcanului \u00een timp ce se preg\u0103tea s\u0103-\u0219i dezl\u0103n\u021buie m\u00e2nia arz\u0103toare.<\/p>\n\n<h2 class=\"wp-block-heading\">Cutremure-tov\u0103: O avertizare ritmic\u0103<\/h2>\n\n<p>Pe l\u00e2ng\u0103 tremorele armonice, oamenii de \u0219tiin\u021b\u0103 au detectat, de asemenea, o serie de cutremure bubuitoare care au precedat erup\u021bia. Acceler\u00e2nd \u00eenregistrarea, au transformat fiecare cutremur \u00eentr-o b\u0103taie distinct\u0103 de tob\u0103, cre\u00e2nd o simfonie captivant\u0103 care \u0219i-a intensificat ritmul pe m\u0103sur\u0103 ce erup\u021bia se apropia.<\/p>\n\n<h2 class=\"wp-block-heading\">Enigma zgomotelor vulcanice<\/h2>\n\n<p>Sursa exact\u0103 a acestor zgomote vulcanice r\u0103m\u00e2ne un subiect de dezbatere \u0219tiin\u021bific\u0103. Potrivit cercet\u0103torilor de la Universitatea din Washington, sunetele \u00ee\u0219i pot avea originea \u00een mai multe mecanisme:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Rezonan\u021ba magmei:<\/strong> Pe m\u0103sur\u0103 ce magma, un amestec topit de roc\u0103, minerale \u0219i gaze, se ridic\u0103 prin cr\u0103p\u0103turile \u00eenguste din scoar\u021ba terestr\u0103, ea poate rezona, produc\u00e2nd un sunet b\u00e2z\u00e2it.<\/li>\n<li><strong>Mi\u0219carea magmei:<\/strong> O alt\u0103 teorie sugereaz\u0103 c\u0103 tremorul armonic \u0219i cutremurele apar pe m\u0103sur\u0103 ce magma este for\u021bat\u0103 printr-un canal \u00eengust sub o presiune imens\u0103. Pe m\u0103sur\u0103 ce magma se lipe\u0219te de pere\u021bii canalului, ea se desprinde \u00een mod repetat, gener\u00e2nd o serie de cutremure mici. C\u00e2nd cutremurele apar rapid, ele se contopesc \u00eentr-un sunet continuu.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Dezv\u0103luirea secretelor canalului<\/h2>\n\n<p>Paige Hotovec-Ellis, vulcanolog, consider\u0103 c\u0103 tremorul armonic \u0219i cutremurele observate la vulcanul Redoubt au fost cauzate \u00een principal de mi\u0219carea magmei \u00eentr-un canal \u00eengust. Ea postuleaz\u0103 c\u0103 magma groas\u0103 a aderat la pere\u021bii canalului, necesit\u00e2nd o presiune semnificativ\u0103 pentru a o desprinde \u0219i a o propulsa \u00een sus. De fiecare dat\u0103 c\u00e2nd magma se mi\u0219ca, declan\u0219a un mic cutremur, iar frecven\u021ba tot mai mare a cutremurelor produc\u00e2nd \u00een cele din urm\u0103 tremorul armonic.<\/p>\n\n<h2 class=\"wp-block-heading\">Concluzie<\/h2>\n\n<p>Studiul zgomotelor vulcanice ofer\u0103 informa\u021bii valoroase despre func\u021bionarea intern\u0103 a acestor colo\u0219i geologici. Dezleg\u00e2nd misterele tremorelor armonice \u0219i ale cutremurelor-tov\u0103, oamenii de \u0219tiin\u021b\u0103 dob\u00e2ndesc o \u00een\u021belegere mai bun\u0103 a proceselor care duc la erup\u021biile vulcanice. Aceste cuno\u0219tin\u021be sunt cruciale pentru dezvoltarea sistemelor de avertizare timpurie \u0219i pentru reducerea riscurilor asociate cu activitatea vulcanic\u0103. Pe m\u0103sur\u0103 ce cercet\u0103rile continu\u0103, ne putem a\u0219tepta s\u0103 descoperim \u0219i mai multe secrete ascunse \u00een ad\u00e2ncurile acestor fascinante minuni naturale.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u021aipetele vulcanilor: Dezlegarea misterelor din spatele zgomotelor vulcanice Introducere Vulcanii, gigan\u021bii seme\u021bi ai naturii, sunt adesea asocia\u021bi cu erup\u021bii n\u0103valnice \u0219i lav\u0103 topit\u0103. Cu toate acestea, unii vulcani de\u021bin un&hellip;<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[212],"tags":[7435,16452,342,572,16450,16449,568,16451],"class_list":["post-12178","post","type-post","status-publish","format-standard","hentry","category-earth-science","tag-volcanic-eruptions","tag-magma-movement","tag-life-science","tag-earth-science","tag-earthquake-drumbeats","tag-harmonic-tremors","tag-volcanoes","tag-volcanic-noises"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/12178","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/comments?post=12178"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/12178\/revisions"}],"predecessor-version":[{"id":12179,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/posts\/12178\/revisions\/12179"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/media?parent=12178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/categories?post=12178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/ro\/wp-json\/wp\/v2\/tags?post=12178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}