{"id":92797,"date":"2024-08-23T10:14:27","date_gmt":"2024-08-23T07:14:27","guid":{"rendered":"https:\/\/www.lovendal.ro\/wp52\/?p=92797"},"modified":"2024-08-23T10:14:27","modified_gmt":"2024-08-23T07:14:27","slug":"cercetatorii-sunt-ingrijorati-polul-nord-magnetic-al-pamantului-se-deplaseaza-rapid-spre-supervulcanul-gakkel-situat-sub-oceanul-arctic","status":"publish","type":"post","link":"https:\/\/www.lovendal.ro\/wp52\/cercetatorii-sunt-ingrijorati-polul-nord-magnetic-al-pamantului-se-deplaseaza-rapid-spre-supervulcanul-gakkel-situat-sub-oceanul-arctic\/","title":{"rendered":"Cercet\u0103torii sunt \u00eengrijora\u0163i: Polul nord magnetic al P\u0103m\u00e2ntului se deplaseaz\u0103 rapid spre supervulcanul Gakkel, situat sub Oceanul Arctic"},"content":{"rendered":"<figure id=\"attachment_92798\" aria-describedby=\"caption-attachment-92798\" style=\"width: 350px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2024\/08\/polul-nord-magnetic.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-92798\" src=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2024\/08\/polul-nord-magnetic.jpg\" alt=\"\" width=\"360\" height=\"316\" srcset=\"https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2024\/08\/polul-nord-magnetic.jpg 543w, https:\/\/www.lovendal.ro\/wp52\/wp-content\/uploads\/2024\/08\/polul-nord-magnetic-300x263.jpg 300w\" sizes=\"auto, (max-width: 360px) 100vw, 360px\" \/><\/a><figcaption id=\"caption-attachment-92798\" class=\"wp-caption-text\"><strong>Imagine:<\/strong> generata de <strong>Microsoft Designer<\/strong><\/figcaption><\/figure>\n<p>Polul nord magnetic al P\u0103m\u00e2ntului este \u00een mi\u0219care, iar traiectoria lui \u00eei ia prin surprindere \u015fi pe geofizicieni. Timp de secole, acest punct invizibil se afla \u00een Arctica canadian\u0103, dar, \u00een ultimele decenii, a c\u00e2\u0219tigat vitez\u0103, travers\u00e2nd Oceanul Arctic spre Siberia \u00eentr-un ritm care i-a l\u0103sat pe oamenii de \u0219tiin\u021b\u0103 \u00eengrijora\u021bi. Aceast\u0103 schimbare rapid\u0103 ar fi demn\u0103 de remarcat de la sine, dar destina\u021bia polului este cea care atrage cu adev\u0103rat aten\u021bia. Potrivit geofizicianului Stefan Burns, polul nord magnetic se \u00eendreapt\u0103 spre unul dintre cei mai mari supervulcani de pe P\u0103m\u00e2nt: <strong>supervulcanul Gakkel<\/strong>.<\/p>\n<p>Supervulcanul Gakkel, situat sub Oceanul Arctic, este o descoperire relativ recent\u0103 care ne-a extins semnificativ \u00een\u021belegerea geologiei P\u0103m\u00e2ntului. Acesta este capabil s\u0103 produc\u0103 erup\u021bii de propor\u021bii uluitoare. S-au g\u0103sit dovezi ale erup\u021biilor vulcanice anterioare &#8211; un crater vulcanic mare &#8211; cu un volum de 3.000 de kilometri cubi. Aceasta este semnificativ mai mare dec\u00e2t craterul vulcanic l\u0103sat de ultima erup\u021bie major\u0103 a supervulcanului Yellowstone, care a avut loc \u00een urm\u0103 cu aproximativ 600.000 de ani.<\/p>\n<p>Doar existen\u021ba acestui supervulcan ar fi motiv de interes \u0219tiin\u021bific. Dar faptul c\u0103 polul nord magnetic al P\u0103m\u00e2ntului se \u00eendreapt\u0103 acum spre el adaug\u0103 o dimensiune cu totul nou\u0103 situa\u021biei. Mi\u0219carea polului se datoreaz\u0103 probabil schimb\u0103rilor \u00een puterea lobilor fluxului magnetic, ad\u00e2nc \u00een interiorul P\u0103m\u00e2ntului. Lobul canadian, care \u021binea polul nord magnetic \u00een loc, a sl\u0103bit, \u00een timp ce lobul siberian s-a \u00eent\u0103rit. Acest dezechilibru a f\u0103cut ca polul s\u0103 se deplaseze spre est cu o rat\u0103 de aproximativ 40 de kilometri pe an.<\/p>\n<p>La viteza sa actual\u0103, polul nord magnetic este de a\u0219teptat s\u0103 traverseze \u00eentregul sistem supervulcanic Gakkel \u00een urm\u0103torii 25 &#8211; 30 de ani. Aceast\u0103 mi\u0219care este mai mult dec\u00e2t o simpl\u0103 curiozitate pentru geofizicieni: ar putea afecta semnificativ stabilitatea \u0219i activitatea vulcanului.<\/p>\n<p>Pentru a \u00een\u021belege de ce, trebuie s\u0103 lu\u0103m \u00een considerare propriet\u0103\u021bile unice ale polului nord magnetic. Acest punct nu este doar o abstractizare matematic\u0103 &#8211; este ca o p\u00e2lnie pentru energia din spa\u021biu. Liniile c\u00e2mpului magnetic al P\u0103m\u00e2ntului converg c\u0103tre poli, cre\u00e2nd ceea ce oamenii de \u0219tiin\u021b\u0103 numesc <strong>&#8222;cuspid\u0103 polar\u0103&#8221;<\/strong>. Aceast\u0103 cuspid\u0103 ac\u021bioneaz\u0103 ca o p\u00e2lnie, direc\u021bion\u00e2nd particulele \u00eenc\u0103rcate din v\u00e2ntul solar jos \u00een atmosfera P\u0103m\u00e2ntului \u0219i, poten\u021bial, \u00een crusta \u0219i mantaua de dedesubt.<\/p>\n<p>\u00cen circumstan\u021be normale, acest aport de energie este r\u0103sp\u00e2ndit pe o zon\u0103 larg\u0103 de crust\u0103 groas\u0103 \u0219i stabil\u0103. Dar, zona \u00een care se afl\u0103 Supervulcanul Gakkel este diferit\u0103. Aici, scoar\u021ba oceanic\u0103 este excep\u021bional de sub\u021bire &#8211; at\u00e2t de sub\u021bire, de fapt, \u00eenc\u00e2t \u00een \u200b\u200bunele locuri mantaua P\u0103m\u00e2ntului este expus\u0103 direct pe fundul oceanului. Aceasta \u00eenseamn\u0103 c\u0103 exist\u0103 foarte pu\u021bin tampon \u00eentre suprafa\u021b\u0103 \u0219i rezervoarele vaste de magm\u0103 de dedesubt.<\/p>\n<p>Pe m\u0103sur\u0103 ce polul nord magnetic se deplaseaz\u0103 peste aceast\u0103 zon\u0103, va concentra afluxul de energie solar\u0103 \u0219i particule \u00eenc\u0103rcate \u00een aceast\u0103 regiune cu suprafa\u0163\u0103 sub\u021bire \u0219i bogat\u0103 \u00een magm\u0103. Preocuparea este c\u0103 aceast\u0103 energie suplimentar\u0103 ar putea destabiliza sistemul deja volatil de supervulcani.<\/p>\n<p>Evenimentele recente au ar\u0103tat c\u0103 leg\u0103tura dintre activitatea electromagnetic\u0103 \u0219i evenimentele geologice este mai mult dec\u00e2t teoretic\u0103. Pe 17 august 2024, o puternic\u0103 furtun\u0103 solar\u0103 a declan\u0219at o perturbare geomagnetic\u0103 pe P\u0103m\u00e2nt. \u00cen c\u00e2teva ore, un cutremur cu magnitudinea 7 a lovit Rusia, urmat aproape imediat de o erup\u021bie vulcanic\u0103 la doar 100 de km spre nord. Acest lan\u021b de evenimente a demonstrat o leg\u0103tur\u0103 clar\u0103 \u00eentre activitatea solar\u0103, furtunile geomagnetice, cutremure \u0219i erup\u021biile vulcanice.<\/p>\n<p>Totu\u015fi, este important de re\u021binut c\u0103, de\u0219i exist\u0103 poten\u021bialul unei erup\u021bii majore, probabilitatea unui astfel de eveniment \u00een viitorul apropiat r\u0103m\u00e2ne sc\u0103zut\u0103. Procesele geologice se desf\u0103\u0219oar\u0103 de obicei pe parcursul a mii sau milioane de ani \u0219i chiar \u0219i sistemele vulcanice active pot r\u0103m\u00e2ne latente pentru perioade lungi. Cu toate acestea, circumstan\u021bele unice care \u00eenconjoar\u0103 Supervulcanul Gakkel &#8211; loca\u021bia sa, sub\u021birea scoar\u021bei de deasupra lui \u0219i acum apropierea de polul nord magnetic &#8211; \u00eel fac un sistem care necesit\u0103 o monitorizare atent\u0103.<\/p>\n<p>Dac\u0103 ar avea loc o erup\u021bie major\u0103, consecin\u021bele ar putea fi grave \u0219i de amploare. Volumul imens de material ejectat ar include probabil cantit\u0103\u021bi semnificative de vapori de ap\u0103 \u0219i alte gaze, care ar putea avea efecte dramatice asupra modelelor meteorologice globale \u0219i asupra climei. Cenu\u0219a \u0219i gazele eliberate ar putea perturba c\u0103l\u0103toriile aeriene, pot afecta produc\u021bia agricol\u0103 \u0219i ar putea avea un impact asupra temperaturilor globale ani sau chiar decenii \u00eentregi.<\/p>\n<p>Mi\u0219carea polului nord magnetic \u00een sine, de\u0219i nu este direct periculoas\u0103, are implica\u021bii pentru naviga\u021bie \u0219i tehnologie. Multe sisteme, de la busolele pentru smartphone-uri p\u00e2n\u0103 la sistemele tehnologice de semnalizare a pistelor de aeroport, se bazeaz\u0103 pe cunoa\u0219terea exact\u0103 a nordului magnetic. Mi\u0219carea rapid\u0103 a polului a necesitat deja actualiz\u0103ri mai frecvente ale modelelor magnetice globale, iar aceast\u0103 nevoie poate cre\u0219te pe m\u0103sur\u0103 ce polul nord \u00ee\u0219i continu\u0103 c\u0103l\u0103toria prin Arctica.<\/p>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/4PcV1_sjTts?si=PcBW9nfKw3q02dC8\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Polul nord magnetic al P\u0103m\u00e2ntului este \u00een mi\u0219care, iar traiectoria lui \u00eei ia prin surprindere \u015fi pe geofizicieni. Timp de secole, acest punct invizibil se afla \u00een Arctica canadian\u0103, dar, \u00een ultimele decenii, a c\u00e2\u0219tigat vitez\u0103, travers\u00e2nd Oceanul Arctic spre &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Cercet\u0103torii sunt \u00eengrijora\u0163i: Polul nord magnetic al P\u0103m\u00e2ntului se deplaseaz\u0103 rapid spre supervulcanul Gakkel, situat sub Oceanul Arctic\" class=\"read-more button\" href=\"https:\/\/www.lovendal.ro\/wp52\/cercetatorii-sunt-ingrijorati-polul-nord-magnetic-al-pamantului-se-deplaseaza-rapid-spre-supervulcanul-gakkel-situat-sub-oceanul-arctic\/#more-92797\" aria-label=\"Cite\u0219te mai multe despre Cercet\u0103torii sunt \u00eengrijora\u0163i: Polul nord magnetic al P\u0103m\u00e2ntului se deplaseaz\u0103 rapid spre supervulcanul Gakkel, situat sub Oceanul Arctic\">Cititi mai multe<\/a><\/p>\n","protected":false},"author":1,"featured_media":92798,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[3356,2502,1662,272,2599,1331,66,7452,19177,2693,7998,1691,4927,9800,2792,105,153,48,1576,5061,12151,2358,4477,3929],"class_list":["post-92797","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-natura-animale","tag-aeroport","tag-atmosfera","tag-camp-magnetic","tag-canada","tag-clima","tag-cutremur","tag-energie","tag-eruptie-vulcanica","tag-gakkel","tag-gaze","tag-geofizician","tag-magma","tag-manta","tag-natura-animale","tag-oceanul-arctic","tag-pamant","tag-polul-nord","tag-rusia","tag-siberia","tag-smartphone","tag-supervulcan","tag-temperatura","tag-vant-solar","tag-yellowstone","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.3 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Cercet\u0103torii sunt \u00eengrijora\u0163i: Polul nord magnetic al P\u0103m\u00e2ntului se deplaseaz\u0103 rapid spre supervulcanul Gakkel, situat sub Oceanul Arctic - Secretele lui Lovendal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lovendal.ro\/wp52\/cercetatorii-sunt-ingrijorati-polul-nord-magnetic-al-pamantului-se-deplaseaza-rapid-spre-supervulcanul-gakkel-situat-sub-oceanul-arctic\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cercet\u0103torii sunt \u00eengrijora\u0163i: Polul nord magnetic al P\u0103m\u00e2ntului se deplaseaz\u0103 rapid spre supervulcanul Gakkel, situat sub Oceanul Arctic\" \/>\n<meta property=\"og:description\" content=\"Polul nord magnetic al P\u0103m\u00e2ntului este \u00een mi\u0219care, iar traiectoria lui \u00eei ia prin surprindere \u015fi pe geofizicieni. Timp de secole, acest punct invizibil se afla \u00een Arctica canadian\u0103, dar, \u00een ultimele decenii, a c\u00e2\u0219tigat vitez\u0103, travers\u00e2nd Oceanul Arctic spre ... 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