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Glaciers

A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation (melting and sublimation) over many years, often centuries. Glaciers slowly deform and flow due to stresses induced by their weight, creating crevasses, seracs, and other distinguishing features. They also abrade rock and debris from their substrate to create landforms such as cirques and moraines. Glaciers form only on land and are distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water.

Contributors in Glaciers

Glaciers

navaden jezera

Water bodies; Glaciers

Širok, nizko-nagib kota aluvialni ravnini je sestavljena iz ledeni izginila, sortirani usedline (imenovana jezera), ki je prevažal po meltwater. , Ki so na aluvialni golo začne ob vznožju ledenika in ...

Terminal moraine

Water bodies; Glaciers

Cross-dolina, greben, kot kopičenje ledeniških usedline, ki tvori v skrajna točka dosežena z terminus napredujočo ledenik.

masne bilance

Water bodies; Glaciers

Ukrep sprememba mase ledenik v določenem trenutku za določen čas. Ravnovesje med kopičenje in ablacijo.

ledeniške groove

Water bodies; Glaciers

Linearni depresijo, palcev kilometrov v dolžino, proizvaja z odstranitvijo rock ali usedline z erozivnih delovanjem ledenika.

malo ledeno dobo

Water bodies; Glaciers

Zadnji interval zmerno ledenik širitev in predujem na zemlji. ~ 650 let nazaj in nadaljeval v dvajseto stoletje začelo na več mestih. Zmerno ledeniki v Severni Ameriki, Južna Amerika, Afriki, Evropi ...

drumlin

Water bodies; Glaciers

Podolgovate greben ledeniški sedimenti, vrezane z ledom, ki se gibljejo nad posteljo ledenik. Na splošno, down-ledenik konca ovalne ali zaobljenimi in up-ledenik zašili. Oblika je pogosto v ...

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