{"id":781,"date":"2026-02-20T22:42:10","date_gmt":"2026-02-20T22:42:10","guid":{"rendered":"https:\/\/www.europesays.com\/sk\/781\/"},"modified":"2026-02-20T22:42:10","modified_gmt":"2026-02-20T22:42:10","slug":"magneticky-severny-pol-meni-smer-za-jeho-unikom-stoja-zahadne-magneticke-bloby-v-jadre-zeme-vosveteit-sk","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/sk\/781\/","title":{"rendered":"Magnetick\u00fd severn\u00fd p\u00f3l men\u00ed smer. Za jeho \u00fanikom stoja z\u00e1hadn\u00e9 magnetick\u00e9 \u201ebloby\u201c v jadre Zeme | Vosveteit.sk"},"content":{"rendered":"

Magnetick\u00fd sever u\u017e d\u00e1vno nesed\u00ed tam, kde ho zakreslil britsk\u00fd pol\u00e1rnik James Clark Ross v roku 1831. Z kanadskej Arkt\u00eddy sa postupne presunul smerom k Sib\u00edri a v posledn\u00fdch rokoch pridal plyn. K\u00fdm kedysi sa pohol len o p\u00e1r kilometrov ro\u010dne, na prelome tis\u00edcro\u010d\u00ed zr\u00fdchlil a\u017e na viac ne\u017e 50 kilometrov za rok. Dnes si dr\u017e\u00ed tempo okolo \u0161tyridsiatich a\u017e \u0161tyridsiatich piatich kilometrov ro\u010dne.<\/p>\n

Za t\u00fdmto \u00fatekom nestoj\u00ed \u017eiadna z\u00e1hada na povrchu, ale procesy tri tis\u00edcky kilometrov pod nohami. Zemsk\u00e9 magnetick\u00e9 pole vytv\u00e1ra roztaven\u00e9 \u017eelezo vo vonkaj\u0161om jadre. Ke\u010f sa jeho pr\u00fadenie preskup\u00ed, pole zmen\u00ed tvar aj intenzitu. A magnetick\u00fd sever reaguje.<\/p>\n

<\/p>\n

<\/p>\n

Odoberaj Vosveteit.sk cez Telegram a prihl\u00e1s sa k odberu spr\u00e1v
\n <\/a><\/p>\n

Vedci z Brit\u00e1nie a D\u00e1nska si pre\u0161li dve desa\u0165ro\u010dia meran\u00ed zo satelitov misie European Space Agency Swarm a svoje v\u00fdsledky zverejnili v \u010dasopise Nature Geoscience<\/a>. Anal\u00fdza uk\u00e1zala, \u017ee sever v posledn\u00fdch rokoch \u201e\u0165ahali\u201c dve obrovsk\u00e9 oblasti magnetick\u00e9ho toku pod Kanadou a Sib\u00edrou. Tieto takzvan\u00e9 \u201ebloby\u201c nie s\u00fa pevn\u00e9 objekty, ale rozsiahle oblasti silnej\u0161ieho magnetick\u00e9ho toku vo vonkaj\u0161om jadre, ktor\u00e9 vznikaj\u00fa pri pr\u00faden\u00ed roztaven\u00e9ho \u017eeleza.<\/p>\n

\u201ePoloha severn\u00e9ho magnetick\u00e9ho p\u00f3lu bola v posledn\u00fdch dvoch dek\u00e1dach do ve\u013ekej miery ur\u010dovan\u00e1 dvoma ve\u013ek\u00fdmi lalokmi magnetick\u00e9ho toku pod Kanadou a Sib\u00edrou,\u201c vysvetlil geofyzik Phil Livermore z University of Leeds.<\/p>\n

\"jadro\"jadroZdroj: Rost9 \/ Shutterstock.com<\/p>\n

Kanadsk\u00fd \u201eblob\u201c \u010dasom zoslabol a rozdelil sa. Silnej\u0161ia \u010das\u0165 sa posunula bli\u017e\u0161ie k sib\u00edrskej oblasti, kde magnetick\u00e9 pole p\u00f4sob\u00ed intenz\u00edvnej\u0161ie. Sever sa tak prirodzene vydal za silnej\u0161\u00edm zdrojom, informuje Popular Mechanics.<\/a><\/p>\n

Ke\u010f sa h\u00fdbe sever, h\u00fdbu sa aj letisk\u00e1<\/p>\n

Mo\u017eno si povie\u0161, \u017ee p\u00e1r desiatok kilometrov ro\u010dne ve\u013ea neznamen\u00e1, no ide o probl\u00e9m, ktor\u00fd akt\u00edvne ovplyv\u0148uje pilotov a let\u00edsk\u00e1. \u010c\u00edsla na prist\u00e1vac\u00edch dr\u00e1hach, napr\u00edklad 09\/27, ozna\u010duj\u00fa smer vo\u010di magnetick\u00e9mu severu, zaokr\u00fahlen\u00fd na desiatky stup\u0148ov. Ak sa sever posunie nato\u013eko, \u017ee sa zmen\u00ed azimut o cel\u00fd stupe\u0148, \u010d\u00edslo prestane sedie\u0165.<\/p>\n

Neprehliadni
\n <\/p>\n

\"Tvoje\"Tvoje <\/p>\n

\n\t\t\t\t\tPopul\u00e1rna spravodajsk\u00e1 aplik\u00e1cia pre iOS a Android dostala ve\u013ek\u00fa aktualiz\u00e1ciu. Pribudlo mno\u017estvo nov\u00fdch funkci\u00ed, ktor\u00e9 mus\u00ed\u0161 vysk\u00fa\u0161a\u0165 <\/p>\n

<\/a><\/p>\n

Letisko potom \u010dak\u00e1 nepr\u00edjemn\u00e1 oper\u00e1cia. Musia zavrie\u0165 dr\u00e1hu, upravi\u0165 mapy, preprogramova\u0165 naviga\u010dn\u00e9 syst\u00e9my a prema\u013eova\u0165 obrovsk\u00e9 \u010d\u00edsla na asfalte. Tak\u00fdto z\u00e1sah absolvovalo napr\u00edklad letisko v Tampe na Floride aj viacer\u00e9 kanadsk\u00e9 letisk\u00e1. Niektor\u00e9 z nich rie\u0161ili premenovanie opakovane v priebehu jednej dek\u00e1dy. Magnetick\u00fd sever tak dok\u00e1zal vytiahnu\u0165 z rozpo\u010dtov mili\u00f3ny.<\/p>\n

Slab\u00e9 miesto nad Atlantikom<\/p>\n

Zmeny v jadre v\u0161ak nevytvorili probl\u00e9m len na severe. Nad ju\u017en\u00fdm Atlantikom sa roz\u0161\u00edrila oblas\u0165, ktor\u00fa vedci nazvali Juhoatlantick\u00e1 anom\u00e1lia. Tam magnetick\u00e9 pole cite\u013ene zoslablo a kozmick\u00e1 radi\u00e1cia prenikla hlb\u0161ie do atmosf\u00e9ry.<\/p>\n

Ke\u010f touto z\u00f3nou prelet\u00ed Medzin\u00e1rodn\u00e1 vesm\u00edrna stanica alebo Hubblov vesm\u00edrny \u010falekoh\u013ead, oper\u00e1tori prevent\u00edvne vypn\u00fa citliv\u00e9 pr\u00edstroje, v opa\u010dnom pr\u00edpade by silnej\u0161ie \u017eiarenie po\u0161kodilo elektroniku. Ide o rutinn\u00fd postup, no jasne ukazuje, \u017ee magnetick\u00e9 pole nepredstavuje abstraktn\u00fd pojem z u\u010debnice fyziky.<\/p>\n

Pohyb severn\u00e9ho p\u00f3lu a v\u00fdvoj tejto anom\u00e1lie spolu s\u00favisia. Obe javy vypl\u00fdvaj\u00fa z rovnak\u00e9ho zdroja, zmenen\u00e9ho pr\u00fadenia roztaven\u00e9ho \u017eeleza v jadre<\/a>. Ke\u010f sa vn\u00fatorn\u00e1 dynamika plan\u00e9ty preskup\u00ed, magnetick\u00fd \u0161t\u00edt z\u00edska nov\u00e9 siln\u00e9 aj slab\u00e9 miesta.<\/p>\n

Zmena magnetick\u00e9ho severu ovplyv\u0148uje aj \u017eivo\u010d\u00edchy<\/p>\n

Magnetick\u00e9 pole vyu\u017e\u00edvaj\u00fa aj \u017eivo\u010d\u00edchy. Morsk\u00e9 korytna\u010dky, lososy \u010di s\u0165ahovav\u00e9 vt\u00e1ky maj\u00fa v tele mikroskopick\u00e9 kry\u0161t\u00e1ly magnetitu, ktor\u00e9 funguj\u00fa ako biologick\u00fd kompas. V\u010faka nemu trafia tis\u00edce kilometrov vzdialen\u00e9 miesta.<\/p>\n

R\u00fdchlej\u0161ie zmeny po\u013ea ich m\u00f4\u017eu zmias\u0165. Vedci preto sleduj\u00fa, \u010di n\u00e1rast po\u010dtu uviaznut\u00fdch ve\u013er\u00fdb na pobre\u017eiach nes\u00favis\u00ed s geomagnetick\u00fdmi v\u00fdkyvmi. Jasn\u00fd d\u00f4kaz zatia\u013e nepredlo\u017eili, no s\u00favislos\u0165 sk\u00famaj\u00fa.<\/p>\n

\"magneticke\"magnetickeZdroj: vchal \/ Shutterstock.com
\nNavig\u00e1cia mus\u00ed reagova\u0165<\/p>\n

Ke\u010f sa sever v roku 2017 pribl\u00ed\u017eil na necel\u00fdch 400 kilometrov ku geografick\u00e9mu p\u00f3lu, americk\u00fd \u00farad National Oceanic and Atmospheric Administration spolu s britsk\u00fdmi partnermi aktualizoval svetov\u00fd magnetick\u00fd model. Bez t\u00fdchto d\u00e1t by komer\u010dn\u00e9 lietadl\u00e1, lode aj smartf\u00f3ny pracovali s odch\u00fdlkou.<\/p>\n

\u201eO\u010dak\u00e1vame, \u017ee p\u00f3l bude pokra\u010dova\u0165 v pohybe smerom k Sib\u00edri, ale predpoveda\u0165 bud\u00facnos\u0165 je n\u00e1ro\u010dn\u00e9 a nem\u00f4\u017eeme si by\u0165 ist\u00ed,\u201c dod\u00e1va Livermore.<\/p>\n

Magnetick\u00e9 pole sa v hist\u00f3rii plan\u00e9ty u\u017e viackr\u00e1t \u00faplne prevr\u00e1tilo<\/a>, no tak\u00e9 zmeny trvali tis\u00edce rokov.<\/p>\n

Dnes sledujeme r\u00fdchly presun, ktor\u00fd c\u00edti technika aj pr\u00edroda. Hlboko pod nami sa preskupili obrovsk\u00e9 masy roztaven\u00e9ho kovu a sever sa vydal na cestu. Zatia\u013e pokra\u010duje k Sib\u00edri. Ako dlho a ak\u00fdm tempom, to uk\u00e1\u017eu \u010fal\u0161ie merania.<\/p>\n


\n
\n
\n
\n
\n
\n P\u00e1\u010dil sa v\u00e1m \u010dl\u00e1nok? Sledujte n\u00e1s na Facebooku
\n
\n <\/a> <\/p>\n

<\/p>\n","protected":false},"excerpt":{"rendered":"Magnetick\u00fd sever u\u017e d\u00e1vno nesed\u00ed tam, kde ho zakreslil britsk\u00fd pol\u00e1rnik James Clark Ross v roku 1831. Z…\n","protected":false},"author":2,"featured_media":782,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[794,305,795,796,797,798,33,799,800,43,40,42,36,50,49,48,801],"class_list":{"0":"post-781","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-svet","8":"tag-jadro-zeme","9":"tag-kanada","10":"tag-magneticky-pol-zeme","11":"tag-magneticky-sever","12":"tag-magnetosfera","13":"tag-material","14":"tag-news","15":"tag-prevratenie-magnetickeho-pola","16":"tag-prudy","17":"tag-sk","18":"tag-slovak","19":"tag-slovencina","20":"tag-spravy","21":"tag-svet","22":"tag-world","23":"tag-world-news","24":"tag-zmena"},"share_on_mastodon":{"url":"","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/781","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/comments?post=781"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/781\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media\/782"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media?parent=781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/categories?post=781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/tags?post=781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}