Lokho Okufana Nezithombe I-Frontier Yokugcina Yezwe

Waqamba ngokuthi "ihlane le-Crystal," akukho ndawo emhlabeni efana ne-Antarctica, eyaziwa ngokuthi yizwekazi lesikhombisa emhlabeni. Yenziwe ngeqhwa neqhwa elingunaphakade, ngamamitha ayizigidi eziyizigidi ezingu-5.5, i-Antarctica yizwekazi lesihlanu elikhulu kunazo zonke, futhi lapho iqhwa elwandle liphindwe kabili ngobusika, leli zwekazi likhula libe likhulu kuphela e- Asia nase- Afrika ngobukhulu. Esimweni sayo esijulile, i-alma ye- Antarctica ice sheet elingu-15 800 ubukhulu, futhi linokuphakama okuphakeme kunazo zonke emhlabeni, ehamba ngamamitha angu-7 100 njalo kulo lonke izwekazi.

Okuphambene ne- Arctic , i- Antarctica yizwekazi elizungezwe lonke olwandle, elinompheme ojulile, olunamapulangwe e-continental, futhi lungenalo umuthi ongenawo umuthi, akukho tundra, futhi akukho nhlobo yabantu. Ukuhamba kwamazinga okushisa waminyaka yonke okulinganiselwa ku--58 ​​degrees Fahrenheit, futhi izinyoni kuphela nezilwane ezincelisayo zasolwandle ezinjengezintambo nezimpawu ezisinda.

Kubathwebuli bezithombe, i-Antarctica ibhekwa njengendawo yokuphupha, futhi ngesikhathi ngihamba nohambo oluhamba phambili, ngathola ngokushesha ukuthi kungani. Iqukethe amabhande amakhulu ezintaba zezwe eziningana, izwe elimelele eliphakathi kwezwe liphila emaphandleni ahlalayo, ngokuvamile ukucabanga ngokuphelele ukuthi kusho ukuthini isikali. Kungakhathaliseki ukuthi kuqoshiwe izimbozo, amapenguwini, noma ama-icebergs amakhulu amakhulu ahlanganisa ama-wildly eNingizimu-mpumalanga, izintaba zezintaba ezihlanjululwa yiqhwa zinikeza iziqondiso ekuqondeni kwezwe lase-Antarctica, izwe elinamandla kakhulu futhi lingabonakali, litholakala kuphela ngo-1820.

Namuhla, leli zwe lizinikezele ekuthuleni nasosayensi njengoba kuboniswe isivumelwano somnyaka we-1959: Ngeke sisebenziselwe ngenhloso yokuhweba kanye nokuthungatha okuqhamuka kakhulu kwezwekazi kuzohlala kunjalo, ngoba izilwane zasendle nezindawo zemvelo ziyokhula kuze kube phakade.

Ngesikhathi uhambo oluya ezwekazi, ujabulela ekudluleleni kweDakeake Passage ehlukumezayo, ujabule yonke imizuzu yohambo olukhulu. Lapho ufika, landela lawa macebiso ukuqinisekisa ukuthi ubhala phansi i-landscape ngokugcwele, ngoba awukwazi ukuthi uzothola nini emkhawulweni wokugcina wezwe.