Hoto - NASA
Tare da yanki kusan kilomita murabba'i 5.000, shiryayyen kankara da aka sani da layin kankara na Larsen C yana gab da fasawa. Ractarƙasar ta riga ta kusan tsayi 110km, faɗi 100m kuma kusan zurfin 500m, kuma kamar yadda Makon ya nuna, ana ganin za a haɗe shi da zaren kankara.
Masana kimiyya suna tsammanin zai zube gaba ɗaya a cikin watanni masu zuwa. Amma me yasa?
Ice kantarar Antarctica an haɗe shi da shiryayyen nahiya, kuma ba a kan ruwa kamar na Arctic ba. Saboda wannan, lokacin da matakin teku ya tashi a duniya. Rukunin Ice na Larsen, wanda yake gefen gabashin gabashin Antarctica, yana aiki azaman akwati don kankara. Abin baƙin cikin shine, sassan Larsen A da B sun riga sun ɓace, a cikin 1995 da 2002 bi da bi.
Dangane da lissafin kimiyya, idan duk kankara zata fasa tekun zata tashi da kimanin santimita 10. Wataƙila ba zai yi yawa ba, amma duk waɗanda ke zaune a bakin teku za su fara fuskantar matsaloli da yawa.
Yayin da matsakaicin yanayin duniya ke ta hauhawa, kankara a Antarctica na narkewa, wanda hakan ke kara dagula lamarin. A wannan batun, a cewar a Nazarin mujallar Nature, wanda masu binciken Robert M. DeConto suka gudanar, daga Sashen ilimin Geosciences na Jami'ar Massachusetts (Amurka), da David Pollard daga Pennsylvania State Institute (Amurka), a shekara ta 2100 matakin ruwa zai iya tashi sama da mita ɗaya.
Idan dai za a iya rage hayakin da ke gurbataccen hayaki, narkewa zai ba da gudummawa kaɗan zuwa haɓakar teku, in ji Farfesa DeConto.
Larsen Ice Barrier, Antarctica.
Zamu ci gaba da sanarwa.