Ndagwurugwu glacier

glacier na iceland

Ndagwurugwu glacier, nke a makwaara dị ka ndagwurugwu ice, na-ezo aka na ndagwurugwu ebe nnukwu glaciers na-ekesa ma ọ bụ mgbe a na-ekesa, na-ahapụ ọdịdị mbara igwe doro anya. A ndagwurugwu glacier Ọ dị oke mkpa maka ọdịdị dị iche iche nke ihe ndị dị ndụ na gburugburu ebe obibi.

Maka nke a, anyị ga-agwa gị ihe niile ịchọrọ ịma gbasara ihe ndagwurugwu glacial bụ, njirimara geomorphology ya.

Kedu ihe bụ ndagwurugwu glacial

ndagwurugwu cantabrian

Ndagwurugwu glacial, nke a na-akpọkarị mmiri mmiri glacial, bụ ndagwurugwu ndị anyị nwere ike ịhụ na ha ahapụla ụdị enyemaka nke glaciers.

Na nkenke, ndagwurugwu glacial dị ka glaciers. A na-etolite ndagwurugwu glacial mgbe nnukwu ice na-agbakọta na okirikiri glacial. Ice si n'ígwé dị ala na-emecha gaa na ala nke ndagwurugwu ahụ, ebe ọ na-emecha ghọọ ọdọ mmiri.

Otu n'ime ihe e ji mara na ndagwurugwu glacial bụ na ha nwere akụkụ obe nke yiri ebe a na-agba mmiri, nke mere na a na-akpọkwa ha mmiri mmiri. Akụkụ a bụ isi ihe na-enye ndị ọkà mmụta ihe gbasara mbara ala aka ịmata ọdịiche dị n'ụdị ndagwurugwu ndị a ebe nnukwu ice slide ma ọ bụ mgbe ọ bụla. Ihe ịrịba ama ndị ọzọ nke ndagwurugwu glacial bụ uwe ha na-eyi na ihe ndị e gwupụtara n'elu, bụ nke esemokwu nke ice na ịdọrọ ihe na-akpata.

Igwe glaciers oge ochie n'ụwa na-echekwa ihe akpụrụ mmiri mebiri na mbụ. Ihe ndị a dị nnọọ iche iche, na n'ozuzu na-etolite dị iche iche ụdị moraine, dị ka moraine nke ala, moraine n'akụkụ, moraine na-akụda, na ọbụna njọ, n'etiti nke a ma ama ọdọ mmiri glacial na-emekarị kpụrụ. Ihe atụ nke ikpeazụ bụ ọdọ mmiri glacial anyị nwere ike ịhụ n'akụkụ ugwu nke European Alps (a na-akpọ Como, Mayor, Garda, Geneva, Constanta, wdg) ma ọ bụ n'akụkụ ụfọdụ nke Central Sweden na ọtụtụ ndị ọzọ.

Dynamics nke ndagwurugwu glacial

glacial ndagwurugwu atụmatụ

Banyere usoro mbuze nke glaciers, ọ dị mkpa ịkọwapụta na glaciers na-emebi emebi nke ukwuu ma nwee ike rụọ ọrụ dị ka eriri ebufe maka ihe nha niile nke mkpọda na-enye, na-ebuga ha na ndagwurugwu.

Ọzọkwa, e nwere nnukwu mmiri gbazere na glacier, nke nwere ike ịgbasa na nnukwu ọsọ na tunnels n'ime glacier, na-ebufe ihe dị na ala nke glacier, na mmiri ndị a subglacial na-arụ ọrụ nke ọma. Ihe ọ na-ebu na-emepụta abrasion, na nkume ndị dị n'ime glacier nwere ike gwerie ya ka ọ bụrụ ngwakọta dị mma nke silt na ntụ ọka glacier.

Glacier nwere ike ịrụ ọrụ n'ụzọ atọ bụ isi ma ha bụ: mmalite glacial, abrasion, ntuli.

N'ime mgbawa ngọngọ gbajiri agbaji, ike iyi mmiri ice nwere ike ịkwaga wee bulie nnukwu mkpọmkpọ ebe akwa akwa agbajiri agbaji. N'ezie, ogologo profaịlụ nke akwa glacier bụ ihe na-adịghị agbanwe agbanwe, na mpaghara ndị na-agbasawanye ma na-emikpu n'ụdị ịda mbà n'obi a na-akpọ mmiri mmiri ma ọ bụ ọwa mmiri, bụ nke na-emewanyewanye site n'ịgwupụta ihe na-erughị ala na nkume na-eguzogide ọgwụ. A na-emezi ebe ahụ warara ma kpọọ ya latch ma ọ bụ ọnụ ụzọ.

N'ebe a na-agafe agafe, a na-emepụta ikpo okwu n'ime nkume ndị siri ike nke na-adaba n'ogo ụfọdụ, nke a na-akpọ pads ubu. Abrasion na-agụnye egweri, ntucha, na ichicha ihe ndina site n'iberibe okwute ndị na-esi n'akpụrụ akpụrụ akpụ. Nke a na-emepụta scratches na grooves. Na polishing, ọ bụ ihe ndị kasị mma, dị ka ájá na nkume.

N'otu oge ahụ, n'ihi abrasion. a na-egwepịa nkume, na-amịpụta ụrọ na ájá, nke a maara dị ka ntụ ntụ ice n'ihi na ọ bụ ezigbo ọka, nke dị n'ime mmiri gbazere ma nwee ọdịdị nke mmiri ara ehi amịkọrọ.

Site na mkpali, glacier na-ebufe ma na-ebugharị n'onwe ya ihe na-emebi emebi nke ọ na-egwepịa ma gbanwee dịka akọwara n'elu.

ụdị nke mbuze

ndagwurugwu glacier

A maara n'ime ha circus, tarn, ridges, mpi, olu. Mgbe ha na-eme ihe ngosi nke ndagwurugwu glacial, ha na-ejikarị na ndagwurugwu ndị dịbu adị, nke na-agbasawanye ma na-emikpu n'ụdị U. Glaciers na-edozi ma mee ka ọnyà nke ndagwurugwu mbụ dị mfe ma na-emebi nkume spurs, na-emepụta nnukwu triangular ma ọ bụ gbajiri agbaji.

Na-ahụkarị longitudinal profaịlụ nke a glacial ndagwurugwu, dịtụ larịị efere na extensions na-eso ibe, na-akpụ agbụ nke ọdọ mmiri na-enweta aha nne na nna anyị mgbe efere jupụtara na mmiri.

Maka ha, Ndagwurugwu Hanging bụ ndagwurugwu oge ochie nke nnukwu glacier. A kọwara ha n'ihi na nbibi nke glaciers na-adabere n'ịdị arọ nke mpempe akwụkwọ ice, na glaciers nwere ike ime ka ndagwurugwu ha dị omimi ma ọ bụghị n'akụkụ mmiri ha.

Fjords na-etolite mgbe mmiri osimiri na-abanye na ndagwurugwu glacial, dị ka ndị dị na Chile, Norway, Greenland, Labrador, na fjords ndịda na Alaska. A na-ejikọtakarị ha na mmejọ na ọdịiche lithological. Ha na-erute nnukwu omimi, dịka ọwa Messier na Chile, nke Ọ dị omimi 1228 mita. Enwere ike ịkọwa nke a site n'ịgwu oke ice na-emebi n'okpuru oke osimiri.

Glaciation nwekwara ike iṅomi nkume nkume ndị na-eme ka nkume dị ka atụrụ, bụ́ ndị ebe ha na-akwọ mụrụmụrụ na nke gbara okirikiri yiri ìgwè atụrụ ndị a na-ele anya n'ebe dị elu. Ha dị n'ogo site na otu mita ruo iri iri na mita ma kwekọọ n'ụzọ nke mmiri na-asọ. Akụkụ nke isi iyi ice nwere profaịlụ dị mma n'ihi mmetụta na-egweri, ebe akụkụ nke ọzọ nwere profaịlụ angular na nke na-adịghị agbanwe agbanwe n'ihi mwepụ nkume.

Msdị nchịkọta

Ibé akwụkwọ ice atalatala kemgbe afọ ice ikpeazụ, ihe dị ka afọ 18.000 gara aga, na-egosi enyemaka ketara eketa n'akụkụ akụkụ niile ha nwere n'oge ice ikpeazụ.

Nkwụnye ego glacial bụ ihe nkwụnye ego nke ihe ndị glaciers na-edobere ozugbo, na-enweghị usoro edoziri nke ọma yana iberibe ya nwere striations. Site n'echiche nke oke ọka, ha dị iche iche, sitere na ntụ ọka glacial ruo nchịkọta na-adịghị akwụsi ike na-ebuga kilomita 500 site na mpaghara ebe ha si malite, dị ka ndị dị na Central Park na New York; na Chile, na San Alfonso, na drawer Maipo. Mgbe nkwụnye ego ndị a jikọtara, ha na-etolite tillites.

A na-etinye okwu moraine n'ụdị dị iche iche nke mejupụtara ugwu. Enwere ọtụtụ ụdị moraine na ogologo ugwu a na-akpọ drumlins. N'ihu moraine bụ mkpọmkpọ ebe dị n'ihu glacier nke na-ewuli elu na arc mgbe glacier na-adịgide n'otu ọnọdụ ruo ọtụtụ afọ ma ọ bụ iri afọ. Ọ bụrụ na mmiri na-asọ na glacier na-aga n'ihu, sedimenti ga-anọgide na-agbakọta na ihe mgbochi a. Ọ bụrụ na glaciers ahụ adalata, a na-edobe oyi akwa nke moraine na-adị nwayọọ nke na-adịghị agwụ agwụ, nke a na-akpọ basal moraine, dị ka ọ dị n'ala mmiri mmiri nke mpaghara Great Lakes nke United States. N'aka nke ọzọ, ọ bụrụ na glacier na-aga n'ihu na-alọghachi azụ, ọnụ ụzọ ya nwere ike kwụsie ike ọzọ, na-eme ka moraine na-ala azụ.

Moraines n'akụkụ bụ ụdị glaciers ndagwurugwu na-ebu sedimenti n'akụkụ ọnụ ndagwurugwu, na-edobe ugwu ugwu. Ebe etiti moraine na-etolite ebe ndị moraine abụọ n'akụkụ na-ezukọ, dị ka nhụta nke ndagwurugwu abụọ.

Drumlins bụ ugwu dị larịị, dịkwa gịrịgịrị n'otu n'otu nwere ebe nchekwa moraine nke glaciers kọntinenti tọrọ. Ha nwere ike iru mita 50 na ogologo otu kilomita, ma ọtụtụ dị obere. Na Ontario, Canada, a na-ahụ ha n'ubi nwere ọtụtụ narị drumlin. N'ikpeazụ, a na-amata ụdị ihe mejupụtara iberibe glacial dị ka kame, kame terraces na eskers.

Enwere m olileanya na site na ozi a ị nwere ike ịmụtakwu banyere ihe ndagwurugwu glacial bụ na njirimara ya.


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  1. Rụ ọrụ maka data: Miguel Ángel Gatón
  2. Nzube nke data: Nchịkwa SPAM, njikwa okwu.
  3. Ikike: Nkwenye gị
  4. Nkwurịta okwu nke data: Agaghị agwa ndị ọzọ data ahụ ma ọ bụghị site na iwu.
  5. Nchekwa data: Ebe nchekwa data nke Occentus Networks (EU) kwadoro
  6. Ikike: Oge obula inwere ike igbachi, weghachite ma hichapụ ihe omuma gi.