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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.
冰川的贡献者
Glaciers
disarticulation
水体; 冰川
Disarticulation 是冰川的冰的通过这些大块,有时会大于.5 英里的宽度,从结束在水体中的间伐和正在撤退的总站分离的过程。Disarticulation 总站薄片,凡其浮力不再允许它继续在其床与接触会发生。如冰川开始自由浮动,并讯速底部关闭它就分开沿断裂的旧伤疤和裂缝。为例,在白令冰川、 阿拉斯加、 楚加奇山中单个观察到的 disarticulation 事件导致近 2/3 ...