I-Antarctica lilizwekazi elinomkhenkce kwiplanethi yethu kwaye inendima enkulu ekumiseni imozulu yehlabathi. Iyakwazi ukuphembelela amaqondo obushushu azo zonke iimbombo zomhlaba kunye nokusinceda ukuba silwe notshintsho lwemozulu.
Nangona kunjalo, njengoko amaqondo obushushu ehlabathi enyuka ngakumbi, amandla eAntarctica kunye nobungakanani bawo buyasingelwa phantsi. I-Antarctica iyichaphazela njani indalo kwihlabathi liphela?
Impembelelo zeAntarctica kwiNtlango yaseAtacama
Kuyacaca ukuba ifuthe le-Antarctica kwinqanaba lehlabathi libaluleke kakhulu kangangokuba kwenzeka ntoni kuyo iya kugqiba ngemozulu yezinye iindawo zehlabathi, kubandakanya nezo zikude kakhulu nelizwekazi. Umzekelo, obu bukhulu bomkhenkce buchaphazela ubukho bentlango yeAtacama kunye nokucaca kwesibhakabhaka sayo. Ezi zibhakabhaka zithathwa njengezona zibalaseleyo kwiplanethi ukuze zikwazi ukujonga isibhakabhaka.
Kodwa yintoni iAntarctica enokwenza nokukho kwale ntlango? Enye yezinto ezenza ukuba le ntlango yome kakhulu kwiplanethi yonke kungenxa yempembelelo anayo iAntarctica umsinga wolwandle ophuma kunxweme lwaseChile. Oku kungoku kupholisa amanzi kwaye kunciphisa iinkqubo zomphunga, nto leyo enciphisa ukuna kwemvula kunye nokugutyungelwa ngamafu kuloo ndawo.
Unxibelelwano phakathi kolwandle
IAntarctica ikwanefuthe kunxibelelwano oluphakathi kweelwandlekazi. Ukuze ukwazi ukuyicacisa ngendlela elula, kunokuthiwa xa amanzi amatsha e-glaciers enyibilika (engaphantsi kakhulu kunamanzi anetyiwa) kwaye adibana nemisinga yolwandle, iyabutshintsha ubutyuwa bayo, obuchaphazela ukuhlangana phakathi umphezulu wolwandle kunye neatmosfera.
Kuba lonke ulwandle lwehlabathi luxhunyiwe (eneneni ngamanzi nje, siyibiza ngamagama ahlukeneyo), nantoni na eyenzekayo e-Antarctica inokuvelisa izinto ezinje ngembalela enkulu, iimvula ezinkulu, njl. Naphi na emhlabeni. Unokuthi ifana nefuthe lebhabhathane.
Ngenxa yokutshintsha kwemozulu kunye nobushushu behlabathi, amaqondo obushushu ayanda kwihlabathi jikelele. E-Antarctica, ngo-Matshi 2015, bafikelela kubushushu be-17,5 degrees. Eli lelonaqondo lobushushu liphezulu elirekhodwe kule ndawo kuba kukho iirekhodi zeAntarctica. Khawufane ucinge ngesixa somkhenkce esiya kunyibilika size sinyamalale kula maqondo obushushu.
Ewe, kwiintsuku ezine kamva, intlango yase-Atacama yanyikima kwiiyure nje ezingama-24 inani elifanayo lemvula eyawa kwiminyaka eli-14 edlulileyo. Ukunyibilika komkhenkce eAntarctic kubangele ukufudumala emanzini kufutshane nentlango, eyonyuse imeko yomphunga kwaye yabangela amafu e-cumulonimbus. Isimo sezulu esingaqhelekanga senza uthotho lwezikhukhula ezishiyekileyo abangama-31 basweleka kwaye abangama-49 balahlekile.
Impembelelo yeAntarctica kwimozulu
Ingqele eqhaqhazelis 'amazinyo yolwandle, eveliswe kwimimandla yeArctic nakwinxalenye esentshona yeAntarctica, yenza ilizwekazi elimhlophe libe "ngumlawuli wemozulu yeplanethi". Ngenxa yenyani yokuba i-Korea ishushu ngokufudumeleyo kunye nobusika obubandayo, kuyimfuneko ukuphanda ngokwenzekayo e-Antarctica ukuqonda ukubaluleka kunye neempawu zezi zinto zenzekayo.
Enye yezinto ezixhalabisayo kwizazinzulu kukuba, ngenxa yokunyuka okuqhubekayo kwamaqondo obushushu ehlabathi, ishelufu enkulu yomkhenkce iLarsen C isemngciphekweni wokuzibamba. malunga neekhilomitha ezingama-6.000 zesikwere ezinokuqhekeka kwaye zibangele izehlo ezigwenxa kwihlabathi liphela. Kule minyaka ingamashumi amathathu idlulileyo, amacandelo amabini amakhulu eshelfu ebandayo, ebizwa ngokuba nguLarsen A kunye noLarsen B, sele ewile, yiyo loo nto umngcipheko usondele.
Ngelishwa, inyani yokuba olu hlobo lweziganeko luyaqhubeka ukwenzeka alunakuphepheka. Nokuba ukukhutshwa kwehlabathi kuncitshisiwe kwangoko, amaqondo obushushu aya kuqhubeka nokunyuka iminyaka embalwa, eyoneleyo ukuba uLarsen C ekugqibeleni achithe. Umhlaba likhaya lethu, ekuphela kwento esinayo. Kufuneka simkhathalele kungekabikho ixesha