Dutsen kankara A-81 ya yi tafiya daga Antarctica zuwa kusa da South Georgia, inda kasa marar zurfi a karkashin teku take kama da tana rage gudunsa. NASA Earth Observatory ta bayyana hakan ranar 27 ga Oktoba da hoton Terra na mako daya kafin nan. Labarin yana bin tafiyar kankarar ne, ba sanarwar sabon yankewar kankara ba.
A-81 ya rabu da Brunt Ice Shelf a Janairu 2023. A lokacin yana da fadin kusan murabba'in kilomita 1,550. Bayan fiye da shekaru uku yana motsi cikin Tekun Weddell, ya kai karshen arewacin Antarctic Peninsula a Mayu 2026, sannan ya ci gaba cikin Tekun Scotia zuwa tsibirin kudancin Atlantika.
A karshen Oktoba, kankarar tana kusa da South Georgia, nesa da inda ta samo asali. Kwararrun da NASA ta ambata sun lura cewa motsinta ya ragu kuma tana kama da tana taba shingen kasa na karkashin teku. Hoto daya yana nuna wuri da siffa, amma jerin hotuna ne suke taimakawa wajen fahimtar motsi.
Yanayin kasar karkashin teku yana da muhimmanci domin babban bangaren kankarar yana boye a ruwa. Kasa marar zurfi na iya dakatar da hanyar da take kama da bude idan aka duba daga sama kawai. South Georgia ta taba jinkirta wasu manyan kankara, ciki har da A-23A wanda ya makale a 2025 kafin ya karye.
Samuwar A-81 ita kanta ta dauki dogon lokaci. Wani babban tsagewa a Brunt ya kasance cikin dan kwanciyar hankali tsawon shekaru da dama kafin ya sake girma. Duk da haka, rabuwar karshe ta dauki karin shekaru. Yankewar kankara dabi'a ce ta ice shelf, don haka ba a danganta guda daya kai tsaye ga sanadi daya ba.
Masana suna ci gaba da sa ido kan Brunt da kankarar da ta bar shi, domin ya fitar da manyan bangarori kuma yana dauke da muhimmin tashar bincike. Tambayar A-81 yanzu ita ce yadda canjin siffarsa, magudanar teku da kasar kasa za su shafi tafiyarsa. Hoton Oktoba wani lokaci ne kawai cikin wannan labari mai ci gaba.