Kamar yadda aka ambata a wasu labaran, kwanciyar hankali na Antarctica yana da mahimmanci ga yanayin duniya. Tare da dumamar yanayi, matsakaita yanayin yanayin duniya gaba daya na karuwa, sakamakon tasirin narkar da kan iyakoki, na Arewacin Arewa da na daskararren nahiyar.
A yan kwanakin da suka gabata, wani katon kankara a Antarctica ya fashe saboda karuwar yanayin zafi. Ginin yana kusa da murabba'in kilomita 5.000 a yankin kuma yana zaune akan Larsen C Ice Shelf. Mahimmancin keɓewar wannan toshe shi ne, saboda girmansa, yana iya canza taswirar kudancin duniya har abada.
Ofaddamar da toshe a Larsen C
Don ambaton muhimmancin al'amarin, da farko zamu koma kan ma'aunin fahimta guda biyu na wannan lamarin: ma'aunin ɗan adam da ilimin ƙasa. A zangon farko, wannan rukunin kuma wannan motsi ya fara jagorantar Antarctica zuwa lalata cikin jinkirin motsi. Koyaya, a ma'aunin ilimin ƙasa, wannan yana faruwa a cikin ƙiftawar ido ɗaya.
Fiye da shekaru 30 an yi gargadin cewa yankin yammacin Antarctica ya fara narkewa. Baya ga hauhawar yanayin duniya da canjin yanayi ya haifar, yawancin ramin da ke cikin ozone ana samunsa a Antarctica. Waɗannan dalilai suna haifar da Antarctica ta narke ta tsalle da iyaka.
Babban katangar ginin da ake kira Larsen C yana keɓewa da raba shi daga sauran kangon kankara kuma wannan na iya kasancewa share fagen durkusar da nahiyar ta daskarewa. Idan za a toshe katangar Larsen C kwata-kwata, yawancin biranen da ke bakin teku a duniya za su malale. Gefen shingen Larsen C suna narkewa cikin hanzari, kamar dai su bangon gidan yashi ne. A ciki akwai tabon da ke haifar da fasa har su kai muraba'in mita 400.
Nunin manunin yankin Antarctic shine ruwan Tekun Amundsen. A cikin shekarun da suka gabata yayi zafi fiye da 0,5 ° C, kuma wannan yana haifar da karuwar saurin da kankara ke narkewa da kuma karyewa. Tsakanin shekarar 2015 zuwa 2016, wani babban kankara mai kimanin kilomita murabba'in 360 ya balle, yana matsawa daga gabar teku. Hasashen game da ƙaruwar zafin jiki, a wannan yanayin ga Tekun Wenddell da ke makwabtaka da Larsen C, matsakaita 5 ° C. Wannan shine dalilin da yasa yawancin ƙaramin kankara ke narkewa gaba ɗaya.
Idan wannan ya ci gaba, toshe Larscen C zai zama babban dusar kankara a tarihi. Zai sami shimfidar wuri mai kama da Autungiyar 'Yan Adam ta Cantabria.
Midas aikin
Researchungiyar Midas ta haɓaka ta ƙungiyar haɗin gwiwa daga Jami'o'in Swansea da Aberystwyth. Aikin ya yi nazari kuma ya kammala cewa saboda tasirin da fasa ya haifar a cikin bulo, ana sa ran rabuwar dutsen kankara zai faru ba da jimawa ba. Lokacin da suke magana ba zato ba tsammani, suna cewa batun makonni ne, tunda tsagin ya riga ya ɗauki juyi 90 ° kuma wannan yakan haifar da rauni.
Muhimmancin karaya
Mahimmancin karyewar kankara Larsen C shine cewa kankarar da ke shirin ɓarkewa an daidaita ta akan jerin tsibirai. Koyaya, sauran ragowar kankara suna kan kwandon da yake da zurfin kusan kilomita 5.000 kuma wannan yana sa shi fuskantar hauhawar yanayin yanayin teku. Don haka idan shingen kankara Larsen C ya narke kuma ya faɗi zai iya haɓaka narkewar sauran ragowar kuma a ƙimar da suke yi, Zai daukaka matakin teku da mita uku, ya mamaye biranen duniya gaba ɗaya.
Duniya tana mana gargaɗi game da sakamakon ɗumamar yanayi kuma ɓarnatar da toshe Larsen C ƙaramin gargaɗi ne kawai.