Cov kws tshawb fawb tau tshawb pom qhov kev hem thawj ntawm kev sib tsoo ntawm cov dej khov ntawm Antarctica

Cov kws tshawb fawb tau tshawb pom qhov kev hem thawj ntawm kev sib tsoo ntawm cov dej khov ntawm Antarctica
Cov kws tshawb fawb tau tshawb pom qhov kev hem thawj ntawm kev sib tsoo ntawm cov dej khov ntawm Antarctica
Anonim

Ib txoj kev tshawb fawb tshiab pom tias ntau dua li ib feem peb ntawm Antarctica thaj chaw khov nab kuab tuaj yeem tsoo mus rau hauv hiav txwv yog tias lub ntiaj teb kub nce plaub degrees Celsius siab dua qib ua ntej tsim khoom. Cov kws sau ntawv kwv yees tias yog qhov kub tuaj yeem khaws cia ntawm Paris Daim Ntawv Pom Zoo lub hom phiaj ntawm ob qib, thaj chaw uas muaj kev pheej hmoo ntawm kev sib tsoo yuav yog ib nrab ntawm qhov loj me, yog li zam kev puas tsuaj loj hauv hiav txwv. Ib tsab xov xwm nrog cov txiaj ntsig tau luam tawm hauv Geophysical Cov Ntawv Tshawb Nrhiav.

Cov kws tshawb fawb Askiv los ntawm Tsev Kawm Ntawv Nyeem Ntawv, siv lub xeev-ntawm-lub-kos duab siab daws teeb meem huab cua hauv cheeb tsam cov txheej txheem, tau tsim cov qauv kev kwv yees ntawm kev cuam tshuam ntawm kev ntxiv yaj thiab dej ntws los ntawm kev ruaj khov ntawm cov dej khov nyob ib puag ncig Antarctica.

Cov kws sau ntawv pom tias 34 feem pua ntawm tag nrho cov dej khov Antarctic, suav nrog 67 ntawm Antarctic Peninsula cov dej khov, yuav muaj kev pheej hmoo ntawm kev tsis ruaj khov rau huab cua sov nce ntawm plaub degrees Celsius.

Cov kws tshawb fawb tau txiav txim siab tias Larsen C Glacier, cov dej khov loj tshaj plaws hauv Antarctic Peninsula, yog qhov pheej hmoo siab tshaj plaws. Hauv xyoo 2017, dej khov loj loj tau tawg los ntawm nws, txo thaj tsam dej khov los ntawm 12 feem pua. Shackleton, Pine Island thiab Wilkins glaciers kuj tseem muaj kev pheej hmoo vim lawv thaj chaw thiab thaj chaw tseem ceeb.

Txhua lub caij ntuj sov, cov dej khov yaj rau saum cov dej khov, dej ntws mus rau hauv cov kab tawg thiab sau hauv cov hnab cua hauv cov daus, qhov uas nws khov dua thaum lub caij ntuj no. Txawm li cas los xij, nyob rau xyoo uas muaj dej khov ntau nyob rau lub caij ntuj sov, dej ntws los ntawm cov kab nrib pleb ntawm cov dej khov, ua kom tob zuj zus thiab nthuav dav, kom txog rau thaum lawv tig mus rau hauv qhov tawg uas yuav faib cov dej khov.

"Peb paub tias thaum cov dej khov sib xyaw ua rau saum cov txee dej khov, nws tuaj yeem ua rau lawv ntog thiab ntog sai sai," hais tias ib tus ntawm txoj kev tshawb fawb tus kws sau ntawv, tus kws tshawb fawb huab cua Ella Gilbert, hauv tsev kawm ntawv tshaj tawm xov xwm. ntawm kev kwv yees kwv yees Antarctic cov dej khov poob qis, thiab hauv txoj kev tshawb fawb tshiab, peb tab tom siv cov txheej txheem ua qauv tshiab tshaj plaws los nthuav qhia cov ntsiab lus thiab muab kev kwv yees raug ntau dua."

Cov kws tshawb fawb ntseeg tias yog tias cov dej niaj hnub sau rau saum lub txee dej khov, nws zoo li yuav tawg. Qhov no yog qhov xwm txheej tau tshwm sim nrog Larsen B Ice Shelf hauv xyoo 2002, uas tau sib cais tom qab ob peb xyoos sov ua ke. Nws qhov kev sib tsoo ua rau muaj kev txav mus los ntawm cov dej khov txuas ntxiv mus rau hiav txwv, qhov uas ntau txhiab lab tons ntawm cov dej khov poob los.

"Cov dej khov yog qhov tseem ceeb tiv thaiv kom tsis txhob muaj dej ntws los ntawm dej hiav txwv mus rau dej hiav txwv, ua rau cov dej hiav txwv nce ntxiv. ntawm kev txwv qhov kub hauv ntiaj teb yog tias peb yuav tsum zam qhov kev cuam tshuam phem tshaj plaws ntawm kev hloov pauv huab cua, "hais tias Dr. Gilbert.

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