冰帽。是一种规模比大陆冰盖小，外形与其相似，而穹形。在压力不均匀情况下，冰体内的冰从中心向四周呈放射状漫流。它是大陆冰盖和山岳冰川的过渡类型。多分布在一些高原和岛屿上，故又有高原冰帽和岛屿冰帽之分。冰岛的瓦特那冰川即是一例。
如果这种变暖发生，两极的冰帽将开始融化，从而使海平面上升数米，并严重淹没沿海城市。
If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several metres and severely flooding coastal cities.
最后，阿加西和其他人说服了地质学家和普通大众，一个巨大的大陆冰川作用已经把极地冰帽延伸到了现在享受温带气候的地区。
Eventually, Agassiz and others convinced geologists and the general public that a great continental glaciation had extended the polar ice caps far into regions that now enjoy temperate climates.
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