IPetermann Glacier, esenyakatho-ntshonalanga yeGreenland, ingaqhekeka ngenxa yamazinga okushisa akhuphukayo esifundeni. I-NASA ishicilele kuphrofayli yayo ye-Twitter isithombe esithwetshiwe ohlakeni lomsebenzi we-IceBridge, olunikezelwe ekutadisheni kwezinguquko ezenzeka minyaka yonke emaqhweni.
Ungase ucabange ukuthi ukuqhekeka okuncane, kepha akukude kakhulu nokunye, okubanzi kakhulu futhi okude. Uma behlangana ndawonye, ingxenye ebalulekile yenguzunga yeqhwa ibingasuswa.
Isithombe - NASA
Inguzunga yeqhwa iPetermann, engenye yezinkulu kunazo zonke eGreenland, inobude obungu-70km, ububanzi obuyi-15km, nobukhulu obusukela ku-600m ezansi kwayo kuya ku-30-80m ngaphambili. UStef Lhermite, usosayensi waseDashi eDelft University of Technology, waba ngowokuqala ukutadisha ukwaphuka okwenzekile kule glacier enkulu, ebonwe ezithombeni ezithathwe emkhathini.
INASA ikwazile ukuthola lokho ukuqhuma kwenzeke eduze nendawo maphakathi neshelfu leqhwa elintantayo, indawo ephakamisa ukungabaza ngokwakhiwa kwayo. Kokubili kungabonakala kulo mfanekiso, othathwe endizeni:
Isithombe - NASA
Kwakungeke kube isiqeshana sokuqala esikhulu esasizophuma: ngo-2010 nango-2012 amashidi amabili eqhwa ayesekhishiwe kuqhwa. Kepha okukhathaza ososayensi kakhulu ukuthi uma amazinga okushisa eqhubeka nokukhuphuka, iqhwa lizoncibilika olwandle lenze izinga lalo likhuphuke. Futhi uma kwenzeka, kuzofanele sibuyekeze amabalazwe omhlaba wonke, singasayiphathi imigomo obekufanele siyithathe ukuvimbela amakhaya ethu ukuthi angakhukhulwa ngamanzi.
Ngakho-ke, kubalulekile ukuthi wazi okwenzekayo emhlabeni ukuze sikuvikele.