Uhla lwezintaba zase-Arctic

uhla lwezintaba ze-arctic

Namuhla sizokhuluma nge uhla lwezintaba ze-arctic. Kuyindlela yezintaba zamabanga aqhekeke kakhulu. Kuyaziwa nangokuthi yi-Arctic Rockies. Itholakala ogwini olusenyakatho-mpumalanga yeNyakatho Melika. Ineziqongo eziningi ezibandayo nezinguzunga zeqhwa ezinkulu zezintaba eziba indawo ehlukile. Ziyizintaba ezinqamula empumalanga namanzi eBaffin Bay futhi engxenyeni esenyakatho inqamula i-Arctic Ocean, yingakho igama lazo.

Kulesi sihloko sizokutshela ngazo zonke izici, i-geology, izimbali nezilwane zezintaba zase-Arctic.

Izici eziyinhloko

iqhwa ezintabeni

Uhla lwezintaba olusuka echosheni elisenyakatho yeNhlonhlo YaseLabrador futhi lungena kulo lonke ugu kanye naseziqhingini eziningi eziqhingini zaseCanada zase-Arctic. Zihlanganisa ibanga eliphelele elingaphezu kwamakhilomitha angama-2.700 XNUMX. Inezintaba eziningi ezibandayo nezinguzunga zeqhwa eziningi ezakha izindawo ezinkulu zeqhwa. Kwezokuphatha, futhi ingeyendawo ezimele yeNunavut, yize ingxenye eseningizimu-mpumalanga ingeyesifundazwe saseNewfoundland naseLabrador naseQuebec.

Luhlelo oluhlukaniswe ngochungechunge lwamabanga ezintaba futhi olunezintaba ezithile eziphakeme ngamamitha angaphezu kwama-2.000 2.616. Isiqongo esiphakeme kunazo zonke saziwa njengeBarbeau Peak futhi singamamitha angu-XNUMX ukuphakama. Kuyaziwa nangokuthi indawo ephakeme kakhulu empumalanga yeNyakatho Melika. Lonke lolu hlelo lwezintaba, kanye ne Izintaba Ezinamadwala, kwababili abahamba phambili eCanada. Ingenye yezindawo ezinemvelo eziklelisa ulwandle i-Arctic Ocean, kanti engxenyeni yomkhakha waseLabrador inesimo sezulu esaziwa njenge-taiga. Isihlangu se-taiga asibonakali siyithinta i-Ecozone, lapho kutholakala khona izinhlobo eziningi zezinto eziphilayo, futhi ayithinti izindawo zemingcele. Lokhu kungenxa yokuthi izakhiwo zabo zebhayoloji ziphambene.

Kulokhu sithola isimo sezulu esibandayo uma kuqhathaniswa nesimo sezulu esifudumele nezinhlobo ezithile zezitshalo kanye nezilwane ezijwayele izindawo ezahlukahlukene. Umelela ukuthi ube indawo ebuswa izindawo ezinkulu zeqhwa elisendaweni emincane enezinguzunga zeqhwa nezintaba-mlilo ezisenkabeni. Lonke lolu setha lwemvelo lwakha indawo eyingqayizivele yobuhle obukhulu. Inezindikimba ezinkulu ezisemngceleni zamanzi ezinezimo ezahlukahlukene zemvelo ezifundeni eziningi ze-arctic ezifanayo emhlabeni. Indawo yabo yaziwa njengezimo zokungathetheleli, yize abantu belondoloze inani labantu abalinganiselwa enkulungwaneni.

Izimo zemvelo zobubanzi bezintaba zase-Arctic

izinguzunga zeqhwa zobubanzi bezintaba ze-arctic

Indawo yonke ingu-75% embozwe yiqhwa noma idwala eliveziwe. Lapha sithola inhlabathi eyayiqhwa eyaziwa unomphela eyaziwa njenge-permafrost. Le permafrost ihlala unyaka wonke futhi yenza ukuphila kwezitshalo nezilwane kutholakale kancane. Hlala wazi ukuthi ukuze impilo ibe khona kumele ngabe kukhona uchungechunge lokudla. Umphumela walolu chungechunge ukuthi izixhumanisi ezahlukahlukene zitholwa kanjani lapho izilwane nezitshalo zingachuma.

Ezintabeni ze-Arctic izinga lokushisa elijwayelekile ibanga kusuka kuma-6 degrees ngesikhathi sasehlobo kuya ku -16 degrees ebusika. La mazinga okushisa aphansi enza ukuthi izimila zingabikho kakhulu. Ngokuyinhloko isizathu sokuthi kungani kungekho zitshalo kungenxa yeqhwa elihlala njalo neqhwa. Ububanzi bezintaba zase-Arctic yi-ecozone encane uma iqhathaniswa nezinye izindawo zaseCanada.

Nalu uhla lwezintaba ezisenyakatho kakhulu emhlabeni. Zaziwa njengeNtaba Yezinselele futhi zitholakala esifundeni esisenyakatho-ntshonalanga yesiqhingi. Ngokunaka ukubaluleka abanakho kwemvelo kanye nokulingana kwemvelo, i-perimeter yasungulwa nesigaba sendawo yemvelo evikelwe. Yaziwa ngokuthi yiTorngat Mountains National Park Reserve, esenhlonhlweni yaseLabrador futhi ihlanganisa ingxenye enkulu yeningizimu ye-Arctic Range. Le ndawo yemvelo evikelekile inesibopho sokuvikela izinhlobo eziningi zezilwane zasendle zase-arctic ezifana namabhere asezindaweni ezibandayo, onogolantethe, izinkozi zegolide kanye ne-caribou.

Indawo yemvelo evikelwe yezintaba ze-Arctic

izintaba ze-torngat

Ipaki yemvelo yasungulwa ngoJanuwari 22, 2005, okwenza kube yipaki kazwelonke yokuqala ukwakhiwa eLabrador. Inenqwaba yezinguzunga zeqhwa namakepisi asezindaweni ezibandayo lapho isifunda esome kakhulu kuyingxenye esenyakatho futhi embozwe amaqhwa eqhwa. Izinguzunga zeqhwa zivame kakhulu eningizimu eyedlulele njengoba zinomswakama omningi. Uma siya esiQhingini i-Ellesmere, siyabona ukuthi iningi lezinketho limbozwe izinguzunga zeqhwa neqhwa. Kuwo wonke ama-500th century, lonke ugu olusenyakatho-ntshonalanga yesiqhingi lwalumbozwe ngethala elikhulu leqhwa elingamakhilomitha angama-90 ngosayizi. Njengoba kulindelekile, lezi zintaba zithinteka ngumphumela wokufudumala kwembulunga yonke. Yonke le ndawo yeqhwa yehliswe ngama-XNUMX% ngenxa yemiphumela yokwanda kwamazinga okushisa okubangelwa ukuphuma kwamagesi abamba ukushisa.

Kunocwaningo olwenziwe ngonyaka we-1986 ngemiphumela yokufudumala kwembulunga yonke ezintabeni zase-Arctic futhi kwatholakala ukuthi ama-48 km2, afaka iqhwa elingama-3.3 km 3 (0.79 cubic miles), aqhamuka emashalofini e-Milne nase-Ayles. 1959 nango-1974. Isigaba sonke esisele sobukhulu beqhwa lolwandle olushubile lomhlaba saziwa njengeWadi Hunt Ice Shelf. Ukonakala kwamashalofu e-Ellesmere kuye kwaqhubeka ngekhulu lama-XNUMX: i-Ward Ice Shelf yabhekana nokudabuka okukhulu ehlobo lika-2002.

Ibhokisi lokufudumala kwembulunga yonke, ukuqhekeka okukhulu okuke kwatholwa yilelo leplatifomu elingaba yingozi embonini kawoyela eBeaufort Sea.

Njengoba ukwazi ukubona, olunye lwezintaba ezinhle kakhulu emhlabeni luthinteka kakhulu yimiphumela yokushisa komhlaba. Ngiyethemba ukuthi ngalolu lwazi ungafunda kabanzi mayelana nobubanzi bezintaba ze-Arctic nezici zayo.


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  1. Ubhekele imininingwane: Miguel Ángel Gatón
  2. Inhloso yedatha: Lawula Ugaxekile, ukuphathwa kwamazwana.
  3. Ukusemthethweni: Imvume yakho
  4. Ukuxhumana kwemininingwane: Imininingwane ngeke idluliselwe kubantu besithathu ngaphandle kwesibopho esisemthethweni.
  5. Isitoreji sedatha: Idatabase ebanjwe yi-Occentus Networks (EU)
  6. Amalungelo: Nganoma yisiphi isikhathi ungakhawulela, uthole futhi ususe imininingwane yakho.