Sinokufumana iikomishoni ezidibeneyo xa uthenga kwiikhonkco kwindawo yethu.Nantsi indlela esebenza ngayo.
Uphononongo olutsha lubonise ukuba iNorth Pole yoyame ngaseSiberia ukusuka kwikhaya layo lemveli kwi-Canadian Arctic njengoko amaqela amabini amakhulu afihlwe nzulu ngaphantsi komhlaba kumda ongundoqo we-mantle abandakanyeka kungquzulwano lwemfazwe.
La mabala, imimandla yemagnethi engalunganga phantsi kweCanada kunye neSiberia, ibandakanyeka kumlo ophumeleleyo.Njengoko amaconsi etshintsha imilo kunye namandla omhlaba wamagnetic, kukho ophumeleleyo;Abaphandi bafumanise ukuba ngelixa ubunzima bamanzi phantsi kweCanada bubuthathaka ukusuka ngo-1999 ukuya ku-2019, ubunzima bamanzi phantsi kweSiberia bunyuke kancinci ukusuka ngo-1999 ukuya ku-2019. kwisifundo.
"Asizange siyibone into enje ngaphambili," uPhil Livermore, umphandi okhokelayo kunye noprofesa oncedisayo we-geophysics kwiYunivesithi yaseLeeds eUnited Kingdom, uxelele iSayensi ephilayo kwi-imeyile.
Xa izazinzulu zafumanisa okokuqala iNorth Pole (apho inaliti ikhampasi) ngo-1831, yayikummandla osemantla waseCanada waseNunavut.Abaphandi bakhawuleza baqaphela ukuba i-pole magnetic esemantla ithande ukukhukuliseka, kodwa ihlala ingekho kude kakhulu.Phakathi kuka-1990 kunye no-2005, isantya apho iipali zemagneti zahamba zatsiba ukusuka kwisantya sembali esingekho ngaphezu kweemayile ezili-9 (iikhilomitha ezili-15) ngonyaka ukuya kwiikhilomitha ezingama-37 (iikhilomitha ezingama-60) ngonyaka, abaphandi babhala kuphononongo lwabo.
Ngo-Okthobha ka-2017, i-magnetic north pole yawela umgca womhla wezizwe ngezizwe kwi-hemisphere esempuma, idlula kumgama weemayile ezingama-242 (iikhilomitha ezingama-390) ukusuka kwi-geographic north pole.Emva koko i-pole magnetic iqala ukuya emazantsi.Kuninzi okutshintshileyo kangangokuba ngo-2019, iingcali zejoloji zanyanzelwa ukuba zikhuphe unyaka kwangoko imodeli entsha yemagnethi yehlabathi, imephu ebandakanya yonke into ukusuka kuhambo lwenqwelomoya ukuya kwi-smartphone yeGPS.
Umntu unokuqikelela ukuba kutheni iArctic ishiya iKhanada isiya eSiberia.Oko kwenzeka de uLivermore noogxa bakhe baqonda ukuba amathontsi abekek’ ityala.
Umhlaba wemagnethi uveliswa yintsimbi engamanzi ejikeleza kumbindi womhlaba ongaphandle.Ngaloo ndlela, ukuguqulwa kobunzima bentsimbi ejingizayo kutshintsha indawo yemagnethi engasentla.
Nangona kunjalo, amandla emagnethi awaphelelanga kumbindi.Ngokutsho kweLivermore, imigca yemagnethi yamagnetic "iphuma" emhlabeni.Kuvela ukuba la mathontsi avela apho le migca ibonakala khona."Ukuba ucinga ngemigca yomhlaba wemagnethi njenge-spaghetti ethambileyo, amabala anjengamaqhuqhuva espaghetti aphuma eMhlabeni," utshilo.
Abaphandi bafumanise ukuba ukusukela ngo-1999 ukuya ku-2019, i-slick phantsi kweCanada yolulela ukusuka empuma ukuya entshona kwaye yahlulahlulwe yaba zizilikhi ezincinci ezimbini eziqhagamshelweyo, mhlawumbi ngenxa yotshintsho kwisakhiwo sokuhamba okuphambili phakathi kuka-1970 no-1999. enye, kodwa iyonke, ulwandiso "lube negalelo ekunciphiseni indawo yaseKhanada kumphezulu woMhlaba," abaphandi babhala kuphononongo.
Ukongezelela, indawo enzulu yaseCanada yasondela ngakumbi kwiSiberia ngenxa yokwahlula.Oku, kwakhona, komeleza indawo yaseSiberia, abaphandi babhala.
Nangona kunjalo, ezi bloko zimbini zikwi-balance balance, ngoko ke "uhlengahlengiso oluncinci kuphela kuqwalaselo lwangoku lunokuguqula indlela yangoku yeNorth Pole ukuya eSiberia," abaphandi babhala kuphononongo.Ngamanye amazwi, ukutyhala kwindawo enye okanye enye kunokuthumela imagnethi emantla eCanada.
Ukuhlaziywa kwexesha elidlulileyo le-magnetic pole movement kwi-North Pole ibonisa ukuba amaconsi amabini, kwaye ngamanye amaxesha amathathu, aphembelele indawo ye-North Pole ngokuhamba kwexesha.Kwiminyaka engama-400 edluleyo, la mathontsi aye abangela ukuba iNorth Pole ihlale kumantla eKhanada, abaphandi bathi.
"Kodwa kule minyaka i-7,000 idlulileyo, [i-North Pole] ibonakala ijikeleze i-geographic pole ngokungaqhelekanga ngaphandle kokubonisa indawo ekhethiweyo," abaphandi babhala kwisifundo.Ngokutsho kwemodeli, ngo-1300 BC ipali nayo yafudukela eSiberia.
Kunzima ukuthetha ukuba kuya kwenzeka ntoni emva koko."Isibikezelo sethu kukuba izibonda ziya kuqhubeka zisiya eSiberia, kodwa ukuxela kwangaphambili ikamva kunzima kwaye asinakuqiniseka," kusho uLivermore.
Uqikelelo luza kusekelwa "ekubekweni esweni okuneenkcukacha kwintsimi ye-geomagnetic kumphezulu woMhlaba nakwindawo kule minyaka imbalwa izayo," abaphandi babhala kuphononongo olupapashwe kwi-Intanethi ngoMeyi 5 kwijenali yeNdalo yeGeoscience.
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ULaura ngumhleli weLive Science kwi-archeology kunye neemfihlakalo ezincinci zobomi.Ukwanika ingxelo ngesayensi ngokubanzi, kubandakanya i-paleontology.Umsebenzi wakhe uboniswe kwiNew York Times, iScholastic, iSayensi edumileyo, kunye neSpectrum, iwebhusayithi yophando lwe-autism.Ufumene amabhaso amaninzi kuMbutho weeNtatheli zeNgcali kunye neWashington Newspaper Publishers Association ngengxelo yakhe kwiphephandaba leveki kufutshane neSeattle.ULaura ubambe i-BA kwi-English Literature and Psychology evela kwiYunivesithi yaseWashington eSt. Louis kunye ne-MA kwiSayensi yokuBhala kwiYunivesithi yaseNew York.
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