Ngaba uyazi apho izibonda zemagneti zehlabathi

Ngaba ubusazi ukuba Umhlaba izibonda 4: ezimbini ngokwezelizwe kunye ezimbini magnetic? Kwaye izibonda ngokwezelizwe ntoni na magnetic nto idibana. Ngaba uyafuna ukwazi apho magnetic Izinti Umhlaba? Ekupheleni kwenkulungwane yamashumi amabini, ngokwamagama zezi: North - ezinzulwini zonxweme kumantla eKhanada, kunye nomzantsi - malunga nekhulu yeekhilomitha ukusuka ngohlangothi Antarctica.

Kwaye baphi izibonda yimagnethi yomhlaba ngoku? bona bahlale ezihambayo. Umzekelo, ngasentla ngo-1831 (ngexesha lokuvula wayo), waba ngama 70. w. eKhanada. Emva kweminyaka engama-70 wamazwe polar R. Amundsen wamfumana sele kwi-50 km ukuya emantla. Iinzululwazi unomdla kulo, waza waqalisa ukubukela. Kwacaca ipali "uhamba" ngokwandayo ngesantya. ngesantya ekuqaleni yayincinane, kodwa landile ukuya ku-40 km / ngonyaka kule minyaka yakutshanje. Ngalo myinge, ngo-2050, kwipali esentla ngemagnethi 'irejista' eRashiya. Kwaye ngeke nje imifanekiso ezintle wezikhanyiso wasentla, leyo uya kubonakala phantse lonke eSiberia, kodwa iingxaki ngokusetyenziswa ikhampasi. exposure nazo ukwandisa isithuba ray, t. To. pole kufuphi Imagnethi yomhlaba mncinci kakhulu kwi-ikhweyitha. Imilinganiselo wabonisa ukuba kwiminyaka 150 lo mhlaba otsalayo somhlaba ngaphantsi kwe-10%. Kwaye yindlela esebenzayo ukhuseleka zonke eziphilileyo nzima yaye engaphandle radiation elanga. oosomajukujuku waseMelika labhabha enyangeni, kwaphuma kwesigubungelo lo mhlaba otsalayo komhlaba waza sibi zokugula radiation. Njengokuba ke akazange abone inyanga, kodwa ukubona apho izibonda kazibuthe boMhlaba, ayifumanekanga.

Ilizwe Antarctica

Antarctica - inxalenye yoMhlaba kufuphi South Pole. Yayibizwa ngokuba "Anti-Arctic" okanye Imbovane-Arctic, njengoko ochasene le Arctic. Igama yokugqibela livela kwisiGrike Arktos - Dipper. Ekubeni amaGrike amandulo ebizwa lekroza ka Ursa Minor kunye Polar Star, kubo bonke abahambi.

Antarctica ilizwekazi Antarctica, iinxalenye zayo ezikufutshane-Atlantic, i-Pacific and nolwase-Indiya kunye neelwandle ze Bellingshausen, Ross, Commonwealth, Weddell kunye Amundsen kunye nabanye. Zonke marine Antarctic igama le Southern Ocean. Kwi-Antarctic, kwaye iquka kwisiqithi yaseMzantsi Amahashe, South George, South Orkney, South Sandwich kunye nabanye abaninzi. . Ngoko ke, Antarctica kuthatha malunga 50-60 imizuzu emzantsi ukufana.

Antarctica - kakhulu, eyona, eyona ...

Antarctica - intlango kwelikhulu lawona - imvula ngaphantsi kwe-100 mm ngonyaka ngamnye: ukusuka 40-50 mm embindini ukuya 600 mm emantla Antarctic Peninsula. Eyona eyaziwa kwi kwizangqa emxinwa ye-Dry asezintlanjeni. Iimvula singabonwa kwiminyaka kwezigidi ezibini. Dry iintili ummelwane - Atacama Intlango, apho ayizange kunisa iyonke engama-400. Amachibi kule ntlambo - kakhulu anetyuwa ehlabathini. OLwandle oluFileyo kuthelekiswa kubo - phantse fresh.

Antarctica - imozulu ngqwabalala, ubushushu lincinane abhalwe Emhlabeni kwisikhululo eSoviet Antarctic "Vostok" 21 Julayi 1983 - minus 89,6 ° C.

Antarctica - indawo yimimoya enamandla. Ukwaphulwa nodumo yimimoya katabatic. Umoya ukunxibelelana zomkhenkce kwintaba ephakame ka 1000 ukuya 4500 m buyehla, ubunjwe ze uqalisa ukhawulezisa, basinge elunxwemeni, maxa wambi efikelela ngesantya 320 km / h.

Antarctica - iindawo enomkhenkce on Earth. Kuphela 0.2-0.3% bobume kungakhankanywanga ne ice - ezintabeni Transantarctic kunye nelizwekazi asentshona, kwakunye neendawo ezingaselunxwemeni okanye crests ngamnye kunye neencopho (nunataks).

Ihlobo kumazantsi Arctic Circle, le ndawo shushu kakhulu, kwaye ke kumo umoya phezu kwazo. Ngokomzekelo, xa Dry Valley of Victoria Land ngoDisemba 1961 kwaba + 23.9 ° C

Ngoku uyazi apho izibonda komhlaba magnetic na.