Izinga lokushisa eliphansi kunawo wonke ake abhalwa emhlabeni

I-AntarcticaTemps_1957-2006_570x375_scaled_cropp

I-Antarctica, izwekazi elibanda kakhulu emhlabeni

Minyaka yonke, uma kufika ubusika, kunabantu abathanda ubusika, iqhwa, kepha kukhona abanye abahluphekayo futhi abakhala ngamazinga okushisa aphansi. Isixazululo esisodwa ukuziduduza ngokucabanga ukuthi kunezinye izindawo lapho amazinga okushisa abanda ngokungenamkhawulo.

Indawo ebanda kunazo zonke ehlala abantu enyakatho-mpumalanga eSiberia, lapho amazinga okushisa emadolobheni aseVerkhoyansk nase-Oimekon ehlele ku-67,8 ºC ngaphansi kuka-zero ngo-1892 nango-1933 ngokulandelana. Futhi kuze kube kwenziwa izifundo zokugcina, irekhodi lalingu-89,2 ° C ngaphansi kuka-zero, libhaliswe esikhungweni sesayensi saseRussia saseVostok I-Antarctica lokhu ngo-1983.

Kepha, njengamanje, iyiphi indawo ebanda kunazo zonke emhlabeni? Indawo ebanda kakhulu ebusweni beplanethi isezintabeni ze-Antarctic ethafeni elisempumalanga ye-Antarctic lapho amazinga okushisa angafinyelela amanani angaphansi kuka-92ºC ngaphansi kuka-zero ngobusuku obucacile basebusika.

Iqembu lososayensi lathola le ndawo ngokuhlaziya amabalazwe okushisa komhlaba anemininingwane eminingi kunawo wonke atholakele kuze kube manje, akhiwe ngemininingwane evela kuma-satellite ezwa kude njengeLandsat 8 (engekaNASA kanye ne-USGS).

Abaphenyi bahlaziye imininingwane etholwe kumasathelayithi ahlukahlukene eminyakeni engama-32. Bathola ukuthi ezimweni eziningi irekhodi lamazinga okushisa abanda kakhulu lalitholakala ochungechungeni lwamaphuzu phakathi kwezintaba zase-Antarctic, iziqongo ezimbili ezisendaweni eyaziwa ngokuthi yi-East Antarctic Plateau. Irekhodi elisha lifinyelelwe ngo-Agasti 10, 2010, lafinyelela amanani we-93,2 ºC ngaphansi kuka-zero.

http://www.youtube.com/watch?v=HMCSyD4jVoc

Bekuvele kusolwa ukuthi lolu luhlu lwezintaba zase-Antarctic lungafinyelela emazingeni okushisa angaphansi kwalawa Vostok ngenxa yokuphakama kwayo, kepha ekugcineni, ngenxa yesizweli se-Landsat 8, ukuthi bekwenzeka ukuthi kufundwe le ndawo ngokuningiliziwe futhi kunqunywe amanani ayo.

Indlela yokuthola impendulo yombuzo, yiliphi izinga lokushisa elibanda kakhulu elingafinyelelwa emhlabeni futhi ngani? Kwaqala lapho abanye abacwaningi befunda ngokufuduswa kwezindunduma ezinkulu zeqhwa ethafeni elisempumalanga ye-Antarctic. Lapho ososayensi bekhulisa imininingwane, babona imifantu ebusweni beqhwa phakathi kwezindunduma, okungenzeka ukuthi zadalwa lapho amazinga okushisa ehla kakhulu kangangokuba ungqimba olungaphezulu lweqhwa lwacwila.

Kule ndawo kunamazinga okushisa asedlulele aqala ukwehla uma isibhakabhaka sikhanya. Uma isibhakabhaka sihlala sicacile izinsuku ezimbalwa, izinga lokushisa lomhlabathi lehla kakhulu, kuvumela ukushisa okusele kuphunyuke. Ngale ndlela, kwakheka ungqimba lomoya obanda kakhulu eqhweni naseqhweni, lujiyane kunomoya ongaphezulu, wehle emithambekeni yezintaba zethafa elisempumalanga ye-Antarctic bese ungena emifantwini yeqhwa, futhi ngale ndlela izinga lokushisa lehla kakhulu.

Ngokusho kwabaphenyi, uma umoya uhlala umile isikhathi eside, ukushisa okusele kuyaqhubeka nokukhishwa, futhi ngale ndlela kufinyelelwa emarekhodini okubanda emhlabeni. Ekuqaleni kwakucatshangwa ukuthi lawa mazinga okushisa atholakala ezindaweni ezithile, kukhombisa amaScambos (umholi wephrojekthi), kepha kutholakele ukuthi ngokuphambene nalokho kubonwa esiqeshini esiphakeme kakhulu se-Antarctica.

Imininingwane engaphezulu: Isifunda saseSiberia Altai saqopha amazinga okushisa aphakeme kakhulu eminyakeni eyi-170Umgogodla weqhwa omdala kunayo yonke emhlabeni owatholakala e-AntarcticaOsosayensi baseRussia babika ukuthi bafinyelele eLake Vostok 2 miles ngaphansi kweqhwa lase-Antarctic

Umthombo: NASA


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  1. Ubhekele imininingwane: Miguel Ángel Gatón
  2. Inhloso yedatha: Lawula Ugaxekile, ukuphathwa kwamazwana.
  3. Ukusemthethweni: Imvume yakho
  4. Ukuxhumana kwemininingwane: Imininingwane ngeke idluliselwe kubantu besithathu ngaphandle kwesibopho esisemthethweni.
  5. Isitoreji sedatha: Idatabase ebanjwe yi-Occentus Networks (EU)
  6. Amalungelo: Nganoma yisiphi isikhathi ungakhawulela, uthole futhi ususe imininingwane yakho.