{"id":10674,"date":"2023-11-14T16:17:33","date_gmt":"2023-11-14T15:17:33","guid":{"rendered":"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/?p=10674"},"modified":"2023-11-14T16:18:22","modified_gmt":"2023-11-14T15:18:22","slug":"descobertes-les-erupcions-volcaniques-mes-recents-de-la-peninsula-iberica","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/general\/descobertes-les-erupcions-volcaniques-mes-recents-de-la-peninsula-iberica\/","title":{"rendered":"Descobertes les erupcions volc\u00e0niques m\u00e9s recents de la pen\u00ednsula Ib\u00e8rica"},"content":{"rendered":"<p style=\"text-align: justify;\">Un equip d&#8217;investigadors de diferents centres nacionals i internacionals, l&#8217;<strong>Intitut Catal\u00e0 de Paleoecologia Humana i Evoluci\u00f3 Social<\/strong> (PHES-CERCA), la <strong>Universitat Rovira i Virgili<\/strong>, la <strong>Universitat de Burgos<\/strong>, l&#8217;<strong>Institut de Diagnostic Ambiental i Estudi de l&#8217;Aigua <\/strong>(IDAEA-CSIC), la <strong>Universitat Aut\u00f2noma de Barcelona<\/strong>, \u200b\u200bla <strong>Universitat de Val\u00e8ncia<\/strong> i la <strong>Universitat de Montpeller<\/strong>, ha dut a terme un important estudi paleoambiental els resultats del qual s&#8217;han publicat a les prestigioses revistes <strong>The Holocene<\/strong> i <strong>Scientific Reports<\/strong> sobre l&#8217;evoluci\u00f3 paleoclim\u00e0tica, l&#8217;activitat volc\u00e0nica i el seu impacte socioecol\u00f2gic al Camp Volc\u00e0nic de la Garrotxa.<\/p>\n<p style=\"text-align: justify;\">L&#8217;estudi realitzat a la Vall d\u00b4en Bas ha descobert que la seva activitat volc\u00e0nica es va estendre fins fa nom\u00e9s 8.300 anys (fins ara es pensava que el vulcanisme va cessar fa uns 13.000 anys), cosa que constitueix el <strong>vulcanisme m\u00e9s recent de tota la pen\u00ednsula Ib\u00e8rica<\/strong>.<\/p>\n<p style=\"text-align: justify;\">Aquesta activitat volc\u00e0nica va fer que diverses colades volc\u00e0niques obturessin la vall del riu Fluvi\u00e0 prop d&#8217;Olot i es form\u00e9s un gran llac a la plana que avui dia es coneix com a Pla de les Preses. Els sediments que es van dipositar en aquest antic llac envoltat de volcans, que inclouen nombroses capes de cendres i lapil\u00b7li volc\u00e0niques, han estat estudiats per diferents especialistes tot reconstruint l&#8217;evoluci\u00f3 paleoclim\u00e0tica dels darrers 13.000 anys al Nord-Est de la Garrotxa i valorant l&#8217;impacte d&#8217;aquestes erupcions als ecosistemes vegetals, lacustres i a les poblacions humanes de la zona.<\/p>\n<p style=\"text-align: justify;\"><strong>A l&#8217;\u00e0rea m\u00e9s propera a la zona d&#8217;activitat volc\u00e0nica (fins a 50 km) i durant els esdeveniments d&#8217;erupci\u00f3 volc\u00e0nica<\/strong>, diferents processos com els fluxos de lava, dip\u00f2sit de materials volc\u00e0nics, pluja de cendra, emanaci\u00f3 de gasos, aerosols, fluxos pirocl\u00e0stics i terratr\u00e8mols, <strong>van afectar la flora i la fauna aix\u00ed com la qualitat de l&#8217;aire i de l&#8217;aigua, i van constituir un perill per a les poblacions humanes<\/strong>. En aquest sentit, i a partir de l&#8217;estudi de jaciments arqueol\u00f2gics propers, s&#8217;observa que les poblacions de ca\u00e7adors-recol\u00b7lectors m\u00e9s properes van abandonar l&#8217;\u00e0rea temporalment durant els per\u00edodes d&#8217;alta activitat volc\u00e0nica, per tornar despr\u00e9s en \u00e8poques de quietud, demostrant una alta capacitat de reorganitzaci\u00f3 i adaptaci\u00f3.<\/p>\n<p style=\"text-align: justify;\">Els treballs publicats mostren, amb gran detall, l&#8217;evoluci\u00f3 paleoambiental del NE de la pen\u00ednsula ib\u00e8rica i l&#8217;impacte socioecol\u00f2gic del vulcanisme ocorregut a la Garrotxa. A m\u00e9s, posen de manifest l&#8217;inter\u00e8s de desenvolupar investigacions paleoecol\u00f2giques interdisciplin\u00e0ries, que analitzin tots els processos involucrats en les transformacions del paisatge causades pel vulcanisme i permetin una comprensi\u00f3 i un coneixement correctes de les seves repercussions.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10676 aligncenter\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2023\/11\/1102_medium.jpg\" alt=\"\" width=\"686\" height=\"514\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2023\/11\/1102_medium.jpg 977w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2023\/11\/1102_medium-300x225.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2023\/11\/1102_medium-768x576.jpg 768w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2023\/11\/1102_medium-200x150.jpg 200w\" sizes=\"auto, (max-width: 686px) 100vw, 686px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-10675\" src=\"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2023\/11\/1099_medium.jpg\" alt=\"\" width=\"828\" height=\"444\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2023\/11\/1099_medium.jpg 1100w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2023\/11\/1099_medium-300x161.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2023\/11\/1099_medium-1024x549.jpg 1024w, https:\/\/serveiseducatius.xtec.cat\/cda-garrotxa\/wp-content\/uploads\/usu1382\/2023\/11\/1099_medium-768x412.jpg 768w\" sizes=\"auto, (max-width: 828px) 100vw, 828px\" \/><\/p>\n<p>Font: <em>Intitut Catal\u00e0 de Paleoecologia Humana i Evoluci\u00f3 Social (PHES-CERCA)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Un equip d&#8217;investigadors de diferents centres nacionals i internacionals, l&#8217;Intitut Catal\u00e0 de Paleoecologia Humana i Evoluci\u00f3 Social (PHES-CERCA), la Universitat Rovira i Virgili, la Universitat de Burgos, l&#8217;Institut de Diagnostic Ambiental i Estudi de l&#8217;Aigua (IDAEA-CSIC), la Universitat Aut\u00f2noma de Barcelona, \u200b\u200bla Universitat de Val\u00e8ncia i la Universitat de Montpeller, ha dut a terme un [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":10677,"comment_status":"open","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,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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