冰舌(英語:Ice tongue)是指冰川外沿探入海水的長窄條狀冰[1],一般由冰川上的冰沿着地表或冰面向雪線以下「緩慢」移動而形成[2]。儘管冰舌的移動速度可能很「緩慢」,但相對於其周邊冰塊,其移動速已算是快速[3]。冰舌作為冰河或山谷冰川的延伸部分,常常會伸入海洋或者湖泊中[2]。
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