Peb kuj yuav tau txais kev pab cuam uas koj yuav los ntawm kev sib txuas ntawm peb lub xaib. Nov yog nws ua haujlwm.
Txoj kev tshawb fawb tshiab tau qhia tias North Ncej yog khoov rau Siberia los ntawm Canadian Arctic raws li ob pawg loj loj zais zais hauv av ntawm cov tub ntxhais-mantle ciam teb kev koom tes hauv ib tug neeg ntawm kev ua tsov ua rog.
Cov pob no, thaj chaw ntawm cov hlau nplaum tsis zoo nyob rau hauv Canada thiab Siberia, koom nrog kev sib ntaus sib tua. Raws li cov tee hloov pauv ntawm cov duab thiab lub zog ntawm daim teb sib nqus, muaj tus yeej; Cov kws tshawb nrhiav pom tias thaum dej loj hauv tebchaws Canada muaj zog los ntawm Seribia tau hloov mus rau Siberia.
"Peb tsis tau pom dua ib yam dab tsi zoo li no ua ntej," Phil Livermore, LeulEfer of Geophysics ntawm University of Luton, qhia txog kev tshawb fawb nyob hauv email.
Thaum cov kws tshawb fawb thawj zaug tau tshawb pom North Ncej (qhov twg lub compass koob ntsiab lus) xyoo 1831, nws yog nyob rau sab qaum teb Canadian thaj chaw ntawm Nunavut. Cov kws tshawb nrhiav sai sai tias sab qaum teb sib nqus ncej phaj tended kom drift, tab sis feem ntau tsis deb. Nyob nruab nrab ntawm 1990 thiab 2005, tus nqi uas tus hlau sib nqus tsiv dhia los ntawm cov keeb kwm ceev ntawm tsis muaj ntau tshaj li 97 mais) ib xyoos, cov kws tshawb nrhiav sau rau hauv lawv txoj kev kawm.
Lub Kaum Hli 2017, Lub Tebchaws Northet North Ncej Hla Hla Txog Hnub Thoob Ntiaj Teb, hla dhau 242 mais (390 mais) ntawm thaj chaw North Polost. Tom qab ntawd sab qaum teb sib nqus ncej pib txav sab qab teb. Yog li ntau tau hloov pauv uas xyoo 2019, geologist tau yuam kom tso tawm ib xyoos thaum ntxov tus qauv sib nqus tshiab ntawm lub dav hlau gps.
Ib qho muaj peev xwm tsuas yog twv seb yog vim li cas Arctic sab laug Canada rau Siberia. Ntawd yog kom txog thaum muaj kev ua tsiaj thiab nws cov npoj yaig pom tau hais tias cov tee yuav tsum tau liam.
Lub tshav sib nqus yog tsim los ntawm cov kua hlau sib hloov hauv lub ntiaj teb sib sib zog nqus sab. Yog li, hloov pauv ntawm qhov loj ntawm cov hlau viav vias hloov chaw ntawm txoj haujlwm ntawm kev sib nqus North.
Txawm li cas los xij, lub teb sib nqus tsis txwv rau cov tub ntxhais. Raws li Livermore, cov sib nqus teb kab "hu ua" tawm ntawm lub ntiaj teb. Nws hloov tawm tias cov tee no tshwm sim qhov twg kab no. "Yog tias koj xav txog cov kab sib nqus
Cov kws tshawb nrhiav pom tias txij xyoo 1999 rau xyoo 1999, ib tug slick nyob rau hauv Canada ncab, tab sis tag nrho cov chaw muaj zog ntawm lub ntiaj teb no, "cov kws tshawb nrhiav tau sau hauv kev kawm.
Tsis tas li ntawd, qhov ntau khaus ntau Canadian cov chaw tau los ze zog rau cov Siberian ib vim splitting. Qhov no, nyob rau hauv lem, muaj zog ntawm txojerian chaw, cov kws tshawb nrhiav sau.
Txawm li cas los xij, ob lub block yog nyob rau hauv ib qho kev sib npaug me me, yog li "tsuas yog kev kho me me rau cov txheej txheem tam sim no tuaj yeem thim cov qauv tam sim no ntawm sab qaum teb," cov kws tshawb nrhiav sau hauv kev kawm. Hauv lwm lo lus, ib lub laub rau ib kis lossis lwm tus tuaj yeem xa cov ntawv sib nqus sab qaum teb rov qab rau Canada.
Kev hloov dua siab tshiab ntawm yav dhau los Sib Nqus Ncej Zog ntawm North Ncej qhia tias ob qho tee, thiab qee zaum peb, tau cuam tshuam ntawm North Ncej sijhawm dhau sijhawm. Tau dhau 400 xyoo, cov tee tau ua rau North Ncej mus rau Binger hauv Northern Canada, cov kws tshawb nrhiav hais.
"Tab sis xyoo dhau los 7,000 xyoo dhau los, [North Ncej] zoo nkaus li tau tsiv nyob ib puag ncig ntawm qhov chaw nyiam," cov kws tshawb nrhiav tau sau hauv kev kawm. Raws li cov qauv, los ntawm 1300 BC tus ncej tseem hloov mus rau Siberia.
Nws yog ib qho nyuaj rau hais tias yuav muaj dab tsi tshwm sim txuas. "Peb twv ua ntej tias tus ncej tseem yuav txuas ntxiv mus rau Siberia, tab sis kwv yees yav tom ntej nyuaj thiab peb tsis tuaj yeem paub meej," tsis paub tseeb tias, "
Txoj kev kwv yees yuav nyob ntawm "cov lus qhia ntxaws ntxaws ntawm lub ntiaj teb nyob rau hauv kev kawm tom ntej no," Cov kws tshawb nrhiav tau sau hauv kev tshawb fawb tom ntej no. 5 hauv cov ntawv xov xwm |
Rau qee lub sijhawm tsawg, koj tuaj yeem sau npe rau ib qho ntawm peb cov ntawv xov xwm zoo tshaj plaws kom tsawg li $ 2.38 toj ib hlis lossis 45% tawm tus nqi tas li rau thawj peb lub hlis.
Laura yog tus editor ntawm kev tshawb fawb txog kev tshawb fawb rau archaeology thiab lub neej me ntsis mysteries. Nws tseem ceeb toom txog kev tshawb fawb dav dav, suav nrog Paleontology. Nws txoj haujlwm tau nthuav tawm hauv New York Times, Scholastic, nrov science, thiab spectrum lub vev xaib. Nws tau txais ntau yam khoom plig los ntawm Koom Haum Kws Tshaj Lij Tshaj Lij thiab Washington ntawv tshaj tawm cov koom haum rau nws cov ntawv xov xwm nyob rau hauv ib lim tiam nyob rau hauv Seattle. Laura tuav ib daim BA hauv ntaub ntawv Askiv thiab Psychology los ntawm Washington University hauv St. Louis thiab Ma hauv kev tshawb fawb sau los ntawm New York University.
Kev kawm txuj ci yog ib feem ntawm peb lub Inc, cov pab pawg thoob ntiaj teb thiab cov ua lag luam digital. Txuas mus xyuas peb lub vev xaib.