在图片上，冰山和冰舌范围以外的海水呈现黑色，而且浮冰很少。
The water beyond the tongue and the iceberg is black in these images, and contains far less ice.
在此之前，默兹冰舌促使这块海域保持着没有浮冰的状态，为冰沼湖(polynya)形成创造了条件。
The glacier tongue had previously contributed to keeping a section of the ocean free of ice, a condition known as a polynya.
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