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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

地面冰磧

Water bodies; Glaciers

直到冰川的毛毯存放所有的冰川移動,通常通過移動冰的表面上。

arete

Water bodies; Glaciers

分隔兩個連續的冰川山谷或客鋸齒狀、 窄脊。經常脊類似鋸齒刀的刀片。法國術語,指的骨頭的魚骨幹。

紅磨坊

Water bodies; Glaciers

窄、 腎小管槽或通過哪些水裂縫進入冰川從表面。偶爾,可能暴露的紅磨坊低端冰川的面孔,或在停滯塊冰的邊緣。

辮狀的河

Water bodies; Glaciers

分支機搆能夠連續分離和團聚的複雜網路的特點是流。當他們有多大沙比他們可以攜帶 流編織。

冰原線

Water bodies; Glaciers

跨冰川、 從邊緣到邊緣,暴露的冰川冰 (下) 和冰川 (右) 的冰雪覆蓋面之間的過渡,標誌著這一條線。在夏天融化的季節,這條線,將遷移到向上冰川。在冰原線分隔從消融區聚集帶的熔體季節的結束。 ...

disarticulation

Water bodies; Glaciers

Disarticulation 是冰川的冰的通過這些大塊,有時會大於.5 英里的寬度,從結束在水體中的間伐和正在撤退的總站分離的過程。Disarticulation 總站薄片,凡其浮力不再允許它繼續在其床與接觸會發生。如冰川開始自由浮動,並訊速底部關閉它就分開沿斷裂的舊傷疤和裂縫。為例,在白令冰川、 阿拉斯加、 楚加奇山中單個觀察到的 disarticulation 事件導致近 2/3 ...

冰蓋

Water bodies; Glaciers

大陸尺度積累的從一個中心的積累,通常在所有方向蔓延的冰川冰和常年積雪厚,subcontinental。

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