indawo ebanda kunazo zonke emhlabeni

Ososayensi base bebazi kakade ukuthi amazinga okushisa aphansi kunawo wonke ake akalwa eMhlabeni asemagqumeni eqhwa eliseMpumalanga ye-Antarctica, eduze neSouth Pole. Kodwa muva nje bathole ukuthi amazinga okushisa lapho angehla ngisho nangaphansi kunalawo akalwe ngaphambili.

Ngo-2013, ukuhlaziya idatha yesathelayithi kwahlonza amaphakethe ahlakazekile omoya obanda kakhulu e-East Antarctic Plateau phakathi kwe-Argos Dome ne-Dom Fuji - amazinga okushisa ehle afika ku-135 degrees Fahrenheit (zero 93 degrees Celsius).

Nokho, ukuhlaziya okusha kwedatha efanayo kuphakamisa ukuthi ngaphansi kwezimo ezifanele, la mazinga okushisa angehla aze acishe abe ngu-148 degrees Fahrenheit (minus 100 degrees Celsius), okungenzeka ukuthi izinga lokushisa elibandayo elingafinyelela eMhlabeni, ngokusho kwabacwaningi bocwaningo olusha.

E-Antarctica embozwe yiqhwa, izinga lokushisa elijwayelekile phakathi nezinyanga zasebusika ezimnyama licishe libe ngu-30 degrees Fahrenheit (minus 34.4 degrees Celsius). Ocwaningweni olusha, ososayensi bahlaziye idatha eqoqwe phakathi kukaJulayi no-Agasti phakathi kuka-2004 no-2016. Amazinga okushisa akalwe ezitsheni ezincane ze-East Antarctic Plateau eduze ne-South Pole, endaweni ephakeme ngamamitha angu-12 (467). Ababhali bocwaningo babike ukuthi amazinga okushisa amasha aphula amarekhodi ayesabalele, avela ezindaweni eziyi-3 ezindaweni ezihlakazekile, "indawo ebanzi" yethafa.

Phakathi nobusika obucwebezelayo, kunesikhathi eside esinesibhakabhaka esicwathile nomoya obuthakathaka. Ndawonye - inqobo nje uma lezi zimo ziqhubeka - zingapholisa iqhwa kanye namazinga okushisa aphansi, ngokusho kocwaningo.

Ngo-2013 nasocwaningweni olusha, abacwaningi balinganise izinga lokushisa lesethelayithi efanayo nedatha eqoqwe eziteshini zesimo sezulu endaweni yase-Antarctica. Ukuhlaziya okusha, abacwaningi babheke kabusha idatha yesimo sezulu esingaphezulu. Kulokhu, baphinde bahlola ukoma komkhathi, njengoba umoya owomile wenza isembozo seqhwa silahlekelwe ukushisa ngokushesha, kusho umlobi ohamba phambili wocwaningo u-Ted Schampos, usosayensi omkhulu wocwaningo e-National Snow and Ice Data Center e-University of Colorado Boulder.

Ngalesi sibuyekezo, baye balinganisa kabusha idatha yesathelayithi futhi bathola isilinganiso esinembe kakhudlwana samazinga okushisa aqanda amathambo kulawo maphakethe aseduze ne-South Pole. Ucwaningo luthole ukuthi iziqephu ezifanayo ezisethafeni phambilini ezaziwa ngokubanda kakhulu eMhlabeni zazisabanda - ngaphezu kwalokho, cishe ngo-9 degrees Fahrenheit (5 degrees Celsius).

Izinga lokushisa eliphansi lerekhodi elisha cishe lizobanda ngendlela elingahlasela ngayo uMhlaba. "Kufanele kubande kakhulu futhi kome kakhulu izinsuku ezimbalwa ukuze kuvele amazinga anzima kangaka," kuchaza uScampos.

“Kunomkhawulo wokuthi izimo zihlala isikhathi eside kangakanani ukuze kuphole kuze kufike emazingeni okushisa aphansi kakhulu, kanye nesilinganiso esiphezulu sokushisa ongasithola emkhathini, ngoba umhwamuko wamanzi kufanele ucishe ungabibikho ukuze ukhulule ukushisa. ukusuka phezulu kulawa mazinga okushisa,”