Sentences with phrase «refrozen ice layers»

Not exact matches

Measurements of the shape of this feature tell scientists that Charon's water ice layer may have been at least partially liquid in its early history, and has since refrozen.

At the Dome A site in East Antarctica — roughly the size of the state of California — the base layer of refrozen ice accounted for up to half the total thickness of the ice sheet, and 24 percent of the area covered by ice.

«The paper reports a fascinating result,» said Richard Alley, a glaciologist at Pennsylvania State University, «that melting beneath deep ice produces water that flows beneath thinner ice and refreezes, and that this has been going on long enough to make a big refrozen layer.»