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Iceberg habeli boholo ba Manhattan e senya leqhoa la Greenland

Khatiso ea Senyesemane ea TT by Khatiso ea Senyesemane ea TT
April 15, 2021
in Archive
Nako ea ho bala: Metsotso e 2 e baliloe
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Leqhoa le lekanang le Manhattan ka makhetlo a mabeli le ile la itokolla ho Petermann Glacier e khōlō ea Greenland, e neng e ka potlakisa leeto la leqhoa metsing a ka leboea, bo-rasaense ba boletse ka Laboraro.

Lena ke lekhetlo la bobeli nakong e ka tlaase ho lilemo tse peli ha Leqhoa la Leqhoa la Petermann le tsoala sehlekehleke se tšabehang sa leqhoa. Ka 2010, e ile ea ntša leqhoa le leng le leholo ka leoatleng.

Phomolo ea morao-rao e ile ea hlokomeloa ke satellite ea NASA ea Aqua, e fetang North Pole ka makhetlo a 'maloa ka letsatsi,' me e ile ea hlokomeloa ke Trudy Wohlleben oa Canadian Ice Service.

"Ka nako ena ea selemo, re lula re shebile Leqhoa la Petermann," Wohlleben o itse, hobane e ka hlahisa liqhobosheane tse kholo tse hlaselang litselana tsa likepe tsa North Atlantic kapa sethala sa oli sa imperil Grand Banks ho tloha Newfoundland. Karolo e kholo ea leqhoa la 2010 e entse joalo, empa ha ea ka ea baka tšenyo, o boletse ka mohala.

Lits'oants'o tsa NASA li bonts'itse namane ea leqhoa - e tloha nokeng e phaphametseng ea leqhoa e bitsoang leleme la leqhoa, e leng karolo ea Leqhoa la Leqhoa la Petermann - 'me le theosa le noka ho theosa le fjord lebopong le ka leboea-bophirima la Greenland. Ka 2001 ho ile ha hlokomeloa hore ho na le lekhalo le leqhoa, empa ka Mantaha ho ile ha bonahala eka ho na le lekhalo.

Ka Labobeli, sathelaete e ile ea bona lekhalo le leholo pakeng tsa leqhoa le leqhoa, 'me liqhoqhoane tse ka tlaase ho noka li ne li senyeha, NASA e boletse inthaneteng.

"Katoloso e phaphametseng [ea leqhoa] e ea senyeha," Eric Rignot oa Jet Propulsion Laboratory ea NASA o boletse polelong. Ha se ho putlama, empa ka sebele ke ketsahalo ea bohlokoa.

Phapang e le 'ngoe lipakeng tsa ketsahalo ea 2010 le ena ke hore sehleke-hleke sa leqhoa sa hona joale se ile sa qhoma ho ea holimo, moo leqhoa le neng le le haufi le marako a mafika a fjord, e leng se ileng sa thibela ho tsamaea ha leqhoa la leoatle.

Andreas Muenchow, setsebi sa maoatle a Arctic, o itse: "Sekhechana sena se neng se le morao haholo, se ne se fana ka matla a mangata a ho khoasolla [leqhoele] ho feta se ileng sa robeha ka 2010, se neng se le hole haholo. Univesithing ea Delaware.

Phomolo ea 2010 e potlakisitse motsamao oa Petermann Glacier ho leba leoatleng ka liperesente tse 10 ho isa ho liperesente tse 20, ho boletse Muenchow ka mohala. Ho khaoha hona joale ho ka ba le phello e khōloanyane motsamaong oa leqhoa.

Liqhoqhoane tse lebōpong la leoatle tse kang leleme lena la leqhoa le phaphametseng li na le tšekamelo ea ho thibela leqhoa le lebang leoatleng. Ha likotoana tsa leqhoa li putlama, maqhoqhoane a ka morao ho tsona hangata a tsamaea ka potlako, ho boletse Muenchow.

Ho sisinyeha ha leqhoa lena le leholo ka metsing a bulehileng ho ke ke ha e-ba le tšusumetso hang-hang boemong ba leoatle, kaha leqhoa lena e ne e se e ntse e le karolo ea sethala sa leqhoa se neng se khomaretsoe fatše empa se atolositsoe holim'a metsi, feela joalokaha leqhoa le qhibilihang ka khalase ea metsi. metsi ha a phahamise boemo ba metsi ka khalaseng.

Muenchow o re phetoho ea maemo a leholimo ke eona e bakang boemo ba hajoale ba Leqhoa la Petermann. A re leqhoa lena le morao haholo naheng joalo ka ha esale ho tloha qalong ea Phetohelo ea Liindasteri lilemong tse fetang 150 tse fetileng.

WASHINGTON - Reuters

Tags: Seqhoa
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