TsimSecondary kev kawm ntawv thiab cov tsev kawm ntawv

Arctic Siv: yam ntxwv xwm. Arctic kev nyab xeeb cheeb tsam

Lub Arctic yog ib qho ntawm feem txias thiab tsis muaj sia qhov chaw ntawm lub ntiaj teb. Nws muaj xws li ib feem ntawm Eurasia. Lub thaj chaw ntawm lub Arctic tsam yog tsuas siv rau cov North Ncej thiab lub Arctic hiav txwv. Nws muaj ntau ciam teb rau lwm nrog cov American sab av loj. Feem ntau mus rau lub duav rov sauv dej muaj xws li cov sab qaum teb thaj tsam ntawm lub Pacific thiab Atlantic dej hiav txwv. Tag nrho cov Arctic tuas ntau tshaj 27 lab square kilometers

climatic tsam

Meteorological ntsuas ntawm lub cheeb tsam yog tshwm sim los ntawm tus mob khaub thuas sab qaum teb cua masses. Arctic kev nyab xeeb cheeb tsam yeej thoob plaws lub Arctic hiav txwv, raws li zoo raws li nyob rau outskirts ntawm Siberia. Frosty huab cua tag nrho cov xyoo puag ncig yog muaj nyob rau hauv cov chaw no rau lub ntiaj teb. Permafrost tsis tau tshav ntuj raws li lawv lub caij nplooj zeeg rau hauv av ntawm ib tug tangent.

Peb yuav hais tias qhov hws khov txias ntawm lub Arctic yuav tu li. Txawm nyob rau hauv lub caij ntuj sov hnub ci tawg yog tsis muaj peev xwm mus txeem lub tuab khaubncaws sab nraud povtseg ntawm cov dej khov. Ib tug me me npaum li cas ntawm tshav kub ntawm qhov chaw tseem tau, tab sis nws mus txog rau lub melting ntawm cov daus cover. Arctic kev nyab xeeb cheeb tsam yog yeej ib txwm yus rho tawm kub tus cwj pwm. Nag lossis daus nyob rau hauv cov cheeb tsam no yog tsis tshua muaj heev. Yog vim li cas yog qhov tsawg kawg nkaus tsi ntsees ntawm pa dej los ntawm tus puas tsawg kub. Qhov nruab nrab dej nag yog tsawg tshaj li 200 mm ib xyoo.

Los ze zog mus rau lub European ib feem ntawm lub teb chaws yog yeej los ntawm subarctic tsam. Lub ntsiab cheeb tsam ntawm nws muab faib rau yog pom tias yuav ua tau lub Eastern Siberia. Ntawm no yog kev nyab xeeb tsawg hnyav, tsim rau lub neej. Lub kub feem ntau sawv mus +12 degrees. Ib xyoos ib zaug nag lossis daus ob zaug - 450 hli.

Arctic Siv: yam ntxwv

Feem ntau qhov no kev nyab xeeb cheeb tsam hais tseg yam tsawg kawg nkaus kub. Feem ntau indicators mus txog -70 degrees. Qhov tseem uninhabitable xam tau tias yog Yamal thiab Taimyr. Ntawm no, qhov nruab nrab kub nyob rau hauv lub caij ntuj no yog hais txog -55 degrees. Ib me ntsis rhaub nyob rau hauv lub Svalbard cheeb tsam thiab Wrangel Island.

Thaum lub sab qaum teb ncej nuj nqis li ntawm -43 degrees. Thaum lub sij hawm lub caij ntuj sov lub kub yuav sawv mus rau -10 0 C. qhov twg ntau loyal huab cua cai islands Golomyanny, Wiese, Hayes thiab Hooker. Muaj tus pas ntsuas kub nce nyob rau hauv lub caij ntuj sov lub sij hawm rau 0. Thaum Cape Cheliuskin nruab nrab nqi sib txawv tsis pub dhau -14 0 C. Arctic Siv sov txog li zoo kub xwb nyob rau hauv lub yav qab teb cov cheeb tsam ntawm lub kawg ntawm lub caij ntuj sov. Nyob rau hauv lub yim hli ntuj, lub nqi yuav ncav cuag 10 degrees. Txawm li cas los, qhov no kub yog tsis muaj ntau tshaj li ob lub lis piam.

Lub Arctic tsam yog them nrog tuab ice masses. Lawv thaj tsam ntawm ntau tshaj 2 lab square kilometers Rau ultra luv luv lub caij ntuj sov melts txog 8% ntawm hiav txwv dej khov. Txawm li cas los, nrog qhov pib ntawm kev nyab xeeb lub caij ntuj no freezes cov dej nto dua.

nta ice

Lub sab qaum teb thaj tsam ntawm lub Arctic dej khov rau ib tug ob peb meters nyob rau hauv qhov tob. Annuals yus ice thickness ntawm 1.5 m. Nrog rau qhov pib ntawm lub caij ntuj sov lawv yuav luag tag melting. Close mus rau lub kaum hli ntuj rau ntawm cov dej saum npoo dua pib tsim dej khov.

Long-term luj yog npaum li cas thicker - txog li 4 meters. Thaum lub sij hawm lub zog ntawm cov dej khov hummocks tsim. Lawv thickness yog feem ntau nce mus txog 15 meters. Raws li ib tug tshwm sim ntawm lub sov Gulf kwj dej khov masses tawg tawm, txoj kev icebergs. Lawv tob (nyob rau hauv cov dej) tej zaum yuav txawv mus rau ib puas meters. Arctic ice plays ib tug tseem ceeb luag hauj lwm nyob rau hauv lub ntiaj teb no kev nyab xeeb system. Lawv muaj kev cuam tshuam lub hnub, kev tiv thaiv cov av kom sov txog li ib qho tseem ceeb highs. lawv kuj muaj ib tug decisive tseem ceeb nyob rau hauv lub ncig ntawm dej hiav txwv currents.

Arctic suab puam

Mas nyob rau hauv lub North Ncej. Yus sib nroj tsuag thiab yam tsawg kawg nkaus kub. Yuav luag tag nrho saum npoo yog them nrog dej khov thiab daus. Yuav kom qhov no cheeb tsam xws li cov sab qaum teb thaj tsam ntawm lub Canadian Archipelago thiab Greenland.

Arctic Siv tau yeej ib txwm tau yus rau zhizniklimaticheskimi unsuitable tej yam kev mob. Txawm li cas los, cov dej khov suab puam - qhov no yog qhov loj tshaj plaws feem ntawm lub North Ncej. Muaj yog tsis tshua muaj nrhiav tau txawm Lichens thiab mosses. Nyob rau hauv lub yav qab teb cov suab puam chaw muaj me me oases ntawm buttercups thiab ncov qaumteb qabteb poppy.

Txoj kev nyab xeeb yog tsis conducive mus rau lub kev loj hlob ntawm fauna thiab muaj. feem ntau ntawm cov xyoo uas lub kub yog khaws cia ntawm theem hauv qab pes tsawg. Qhov siab tshaj plaws tshwm sim yog nyob rau hauv lig lub caij ntuj sov - 2 - - 4 0 C. Nag lossis daus - ib tug tsawg phenomenon.

Xwm ntawm lub Arctic tsam

Cov muaj yog tsuas yog sawv cev los ntawm ntsias lov tas vau thiab mosses. Nyob rau hauv lub yav qab teb qhov chaw tau raws li qhov cov nyom siab siab, thiab txawm cereals. Nyob rau hauv ntau haiv neeg ntawm cov nqe lus nug muaj. Ntawm flowering nroj tsuag yog txawv xwb ncov qaumteb qabteb poppy, sedge thiab saxifrage.

Lub Arctic tsam yog tsis nplua nuj, thiab cov tsiaj qus. Lub hom inhabitants, lub apex ntawm cov khoom noj khoom haus saw, polar bears yog suav hais tias. koj ua tau raws li mos lwj nyob rau hauv lub yav qab teb ib feem ntawm lub Arctic muskox, Bighorn yaj, lemmings thiab Arctic hares. Cov feem ntau txaus ntshai txhom yog hma thiab hma. Feem ntau hom tsiaj nyob rau hauv lub Arctic yog xam tau tias yog nas.

Noog txog xwb nyob rau hauv lub caij ntuj sov. Lawv zes feem ntau nyob rau hauv lub tundra.

Nyob rau hauv qhov dej ntawm tus Arctic nyob walruses, cov ntsaws ruaj ruaj, narwhals, thiab baleen whales.

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