Magnetic Pole: Ingaba inversion Pole kunokwenzeka?

nezibonda Magnetic yoMhlaba - njengenxalenye geomagnetic planet endle ezenzeka ngenxa intshukumo yokumpompoza yentsimbi etyhidiweyo kunye nickel jikelele core esembindini esiqinileyo ngenxa imisinga kwi ionosphere, mgaqweni zasekuhlaleni uqweqwe . nezinye nezibonda ngemagnethi eyaziwayo indawo apho endle Geomagnetic ngaphantsi angles ilungelo kumphezulu womhlaba. Xa iyonke kukho izibonda ezimbini - nasentla, nasezantsi, izinto ezo antipodal ngenxa asymmetry yasendle.

kwipali Magnetic kwi kumntla ikhweyitha kubume bayo nguye wasezantsi, ngokuba Le yindawo apho imigca endle hamba phantsi komhlaba. A "eyinyaniso" North Pole ukho ezantsi, apho umgca ukusuka ngaphantsi komhlaba ngaphandle.

Kuthathwa ukuba ubukho izibonda kazibuthe uluntu uyazi ukuba ixesha elide. Sele 220 BC e China yenziwa yi kumfanekiso lokuqala ikhampasi, leyo ibizwa ngokuba 'itafile wasezulwini. " Kwakugcwele ngecephe encinane ejikelezayo amacwecwe phakathi zezobhedu. Uququzelelo ngqo apho ngasentla kunye nezibonda nangasezantsi kazibuthe boMhlaba, sele ifakiwe banesifo kunye novalo benkulungwane XIX. Ngowe-1831, abazalwana Ross wayezimisele ukuba kwipali esentla kuba ngama-70 imizuzu emi-5 inkululeko ngasentla kunye degrees 96 imizuzu 46 entshona entshonalanga. A emazantsi ngemagnethi na uququzelelo zilandelayo: 75 degrees imizuzu engama-20 ngama ngasezantsi nezifundo 132 imizuzu engama-20 obunga-East (esekwe kunyaka 1841). Ekuqaleni kwenkulungwane xxi indawo kwezi ngongoma litshintshile kakhulu. Umntla yimagnethi yomhlaba "ekhohlo" kwipali ukusuka kwindawo echazwe 1831 ukuya 1340 km, nelasezantsi - to 1349 (kwi indawo 1841, ngokulandelelanayo). Isikhokelo kwezi ngongoma ayikho yomgama - bakwazi ukwenza kunye intshukumo nokubuya.

Kwiminyaka yakutshanje, izazinzulu ziye zaphawula ukuba ukubana leepali komhlaba ngemagnethi kakhulu olukhawulezileyo. Abanye bathi oku isibakala sokuba kwixesha 1969-1970. Kwenzeke jump geomagnetic, apho watshintsha ngokubonakalayo parameters asendle le planethi. ukulungiswa ngakumbi uququzelelo indawo lwaqhutywa phantsi kweempembelelo watshisa izitha 1978 no 1991-1992. Kwakhona, ipali magnetic iphenjelelwa inani ngamandla entsimini, yawayo ixabiso elincinane kwinkulungwane yokugqibela. Kulo mba, kukho iingcebiso ye Ukuguqulwa izibonda, apho baya uhlele, ibangela kwiintshabalaliso ezininzi neentlekele zemvelo kunokwenzeka. Kule minyaka izizigidi emibini edlulileyo, utshintsho izibonda zabanjwa malunga 20 amaxesha, apho yokugqibela liwela isithuba malunga 0.8 yezigidi. Kwiminyaka eyadlulayo. Noko ke, xa oku kusenzeka kwixesha elilandelayo, ngokuchanileyo ukuqikelela akukho namnye unako, ngokuba zonke iziganeko zangaphambili rhoqo.

Ngexesha isifundo, ngo-1993, lwenziwa ematyeni ukusuka emazantsi Pacific Ocean, kwafunyaniswa ukuba emva umva mhlaba otsalayo kuqala ofumana intlawulo eliphezulu, ngoko amandla wayo ngokuthe ibulale. Mhlawumbi oku uhlobo yindlela jikelele ukuphucula ukhuselo ukuphila emhlabeni kwimitha cosmic. Ngaphandle kwalo, Umhlaba wethu kuba nabomi, Mars, apho intsimi buthathaka kakhulu, okanye Venus, apho ngokuqhelekileyo ayikho.