{"id":3708,"date":"2022-01-20T12:26:08","date_gmt":"2022-01-20T11:26:08","guid":{"rendered":"https:\/\/agora.xtec.cat\/sescanet\/?p=3708"},"modified":"2022-01-20T12:26:08","modified_gmt":"2022-01-20T11:26:08","slug":"la-increible-erupcio-del-volca-hunga-tonga","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/sescanet\/stemnews\/la-increible-erupcio-del-volca-hunga-tonga\/","title":{"rendered":"La incre\u00efble erupci\u00f3 del volc\u00e0 Hunga Tonga"},"content":{"rendered":"<p>El dissabte 15 de gener el volc\u00e0 submar\u00ed Hunga Tonga &#8211; Hunga Ha&#8217;apai, situat uns 65 quil\u00f2metres al nord de la capital de Tonga (Polin\u00e8sia), va entrar en erupci\u00f3 amb una explosi\u00f3 molt violenta que va originar una columna de fum de m\u00e9s de 30 km d&#8217;al\u00e7ada.<br \/>\nEn comparaci\u00f3 amb d&#8217;altres erupcions ocorregudes els darrers anys, es tracta d&#8217;una erupci\u00f3 molt destacada degut a diversos aspectes:<br \/>\n&#8211; Ha provocat la desaparici\u00f3 de la illa central de l&#8217;arxip\u00e8lag, creada per una erupci\u00f3 del mateix volc\u00e0 entre finals de l&#8217;any 2014 i principis del 2015.<br \/>\n&#8211; Ha estat l&#8217;erupci\u00f3 volc\u00e0nica m\u00e9s explosiva del segle XXI. Aquest tipus d&#8217;explosions ocorren una vegada cada milers d&#8217;anys. De fet, l&#8217;explosi\u00f3 i la columna de gasos generada, d&#8217;uns 30 km d&#8217;al\u00e7ada, va ser captada des de l&#8217;espai per diversos sat\u00e8l\u00b7lits d&#8217;observaci\u00f3 que es trobaven propers a la zona. Perqu\u00e8 ens fem una idea, l&#8217;altura m\u00e0xima de la columna del volc\u00e0 de La Palma va arribar nom\u00e9s als 8 km.<\/p>\n<figure class=\"figure wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3709\" src=\"https:\/\/agora.xtec.cat\/sescanet\/wp-content\/uploads\/usu509\/2022\/01\/NHFB5ZJVWFKC5SUNZ5WZ5K5J3M-Eulalia-Salichs.jpg\" alt=\"\" width=\"1960\" height=\"1103\" srcset=\"https:\/\/agora.xtec.cat\/sescanet\/wp-content\/uploads\/usu509\/2022\/01\/NHFB5ZJVWFKC5SUNZ5WZ5K5J3M-Eulalia-Salichs.jpg 1960w, https:\/\/agora.xtec.cat\/sescanet\/wp-content\/uploads\/usu509\/2022\/01\/NHFB5ZJVWFKC5SUNZ5WZ5K5J3M-Eulalia-Salichs-300x169.jpg 300w, https:\/\/agora.xtec.cat\/sescanet\/wp-content\/uploads\/usu509\/2022\/01\/NHFB5ZJVWFKC5SUNZ5WZ5K5J3M-Eulalia-Salichs-1024x576.jpg 1024w, https:\/\/agora.xtec.cat\/sescanet\/wp-content\/uploads\/usu509\/2022\/01\/NHFB5ZJVWFKC5SUNZ5WZ5K5J3M-Eulalia-Salichs-768x432.jpg 768w, https:\/\/agora.xtec.cat\/sescanet\/wp-content\/uploads\/usu509\/2022\/01\/NHFB5ZJVWFKC5SUNZ5WZ5K5J3M-Eulalia-Salichs-1536x864.jpg 1536w\" sizes=\"auto, (max-width: 1960px) 100vw, 1960px\" \/><figcaption class=\"wp-caption-text\">\u00a0This satellite image released by NICT, shows the Pacific nation of Tonga Saturday, Jan. 15, 2022. (NICT via AP)<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>La quantitat de di\u00f2xid de sofre que va expulsar la detonaci\u00f3 del 15 de gener va ser de 450.000 tones en pocs minuts, l&#8217;equivalent a la quantitat expulsada pel volc\u00e0 de La Palma en 85 dies.<\/li>\n<li>L&#8217;ona de pressi\u00f3 atmosf\u00e8rica s&#8217;ha sentit a tot el planeta, incl\u00fas al nord d&#8217;\u00c0frica, el punt diametralment oposat (l&#8217;ant\u00edpoda).<\/li>\n<li>El so de la detonaci\u00f3 es va escoltar a m\u00e9s de 800 km de dist\u00e0ncia de Tonga, per exemple a les illes Fiji.<\/li>\n<li>Poc despr\u00e9s de l&#8217;explosi\u00f3, es va produir una alerta de tsunami a les illes properes: Fiji, Nova Zelanda i Austr\u00e0lia. Incl\u00fas a costes banyades pel Pac\u00edfic i tan allunyades com la costa oest dels EUA, Per\u00fa i Xile.<\/li>\n<li>Les erupcions voc\u00e0niques provoquen molts llamps pel fregament dels fragments de roca alliberats. A la zona es van detectar 400.000 llamps en una sola hora, molts m\u00e9s que els produ\u00efts en l&#8217;erupci\u00f3 de La Palma al llarg de 85 dies.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Ser\u00e0 molt interessant seguir els efectes d&#8217;aquesta erupci\u00f3 els propers dies. De nou, la Terra ens meravella mostrant-nos la seva for\u00e7a brutal i imponent.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>by Eul\u00e0lia Salichs&hellip;  <a href=\"https:\/\/agora.xtec.cat\/sescanet\/stemnews\/la-increible-erupcio-del-volca-hunga-tonga\/\" title=\"Read La incre\u00efble erupci\u00f3 del volc\u00e0 Hunga Tonga\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":3709,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[125],"tags":[],"class_list":["post-3708","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-stemnews"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/posts\/3708","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/comments?post=3708"}],"version-history":[{"count":1,"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/posts\/3708\/revisions"}],"predecessor-version":[{"id":3710,"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/posts\/3708\/revisions\/3710"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/media\/3709"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/media?parent=3708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/categories?post=3708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/sescanet\/wp-json\/wp\/v2\/tags?post=3708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}