Dhallaanka wabiga qiyaame wuxuu muujinayaa masiibo... waxay ku dhegtaa cidiyaha

Digniin naxdin leh, tiro ka mid ah saynisyahano ayaa ka digay in "Thwaites Iceberg" ee weyn ee galbeedka Antarctica, uu wajahayo dib u gurasho aan horay loo arag, taas oo khatar ku noqon karta meeraha.

Waxay ogaadeen in glacier Thwaites, oo loo yaqaan Glacier Resurrection, laga yaabo inay si degdeg ah u soo noqdaan sanadaha soo socda, taasoo kor u qaadeysa walaaca ku saabsan kor u kaca heerka badda ee la socda dhimashadiisa suurtagalka ah.

Daraasad lagu daabacay Isniintii jariiradda Nature Geoscience, saynisyahannadu waxay dejiyeen dib u gurashada taariikhiga ah ee barafka, iyagoo rajeynaya inay wax ka bartaan barafka hore oo ay saadaaliyaan waxa laga yaabo inuu barafka sameeyo mustaqbalka, CNN ayaa werisay.

Waxa kale oo ay ogaadeen in wakhti ka mid ah labadii qarni ee la soo dhaafay, saldhigga barafka uu ka soo baxay sagxadda badda oo uu dib ugu gurtay 1.3 mayl (2.1 kiiloomitir) sannadkii, laba jeer qiyaasta saynisyahanadu ay arkeen tobankii sano ee la soo dhaafay ama sidaas.

Burburkan degdega ah ayaa laga yaabaa inuu dhacay "dhawaan bartamihii qarnigii XNUMXaad," Alistair Graham, oo ah qoraaga hormuudka u ah daraasadda iyo geophysicist badda ee Jaamacadda Koonfurta Florida, ayaa ku sheegay war-saxaafadeed.

Waxa uu sidoo kale xusay in wabigu uu awood u leeyahay in uu dib u gurasho degdeg ah ku sameeyo mustaqbalka dhow, marka uu ka talaabsado meel ka baxsan cirifka sagxada badda taas oo ka caawinaysa in la xakameeyo.

"Cidiyaha ayuu qabtaa"

Robert Larter, oo ah khabiir ku takhasusay cilmiga dhulka badda, isla markaana ka mid ah khubarada cilmi-baadhistan wax ka qoray oo ka socday Sahanka Ingiriiska, ayaa yidhi: “Webigu runtii ciddiyihii faraha ayuu ku hayaa maanta, waana in aanu filaynaa in aanu aragno isbeddello waaweyn oo wakhti yar mustaqbalka ah – xitaa laga bilaabo sannadka. ilaa sanadka - mar haddii wabigu guro, barafka ka shisheeya cidhifka hoose ee hoose.

Glacier Thwaites, oo ku yaal Galbeedka Antarctica, waa mid ka mid ah kuwa ugu weyn Dhulka oo ka weyn gobolka Florida.

Laakiin waa qayb ka mid ah xaashida barafka ee Galbeedka Antarctic, kaas oo ka kooban baraf ku filan oo kor loogu qaadayo heerka badda ilaa 16 cagood, sida ay sheegtay NASA.