Sentences with phrase «ice sheet margin at»

He told the Climate News Network: «While the sparse existing observations do not indicate warmer water inflow towards the Wilkes ice sheet margin at present, there is no reason why changes similar to those in West Antarctica could not also occur here.»

Not exact matches

Additionally, the Zachariae glacier at the ice sheet margin began its retreat and moved into deeper water, which exacerbated the melt, said Bevis.

«The beds at the margins of the ice sheet... are probably one of the least explored parts of Earth's surface,» said Ian Howat, a glaciologist at Ohio State University who did not participate in the research.

«The effort to use the old photographs to learn how the margins of the ice sheet have changed is wonderful,» said Richard Alley, a glaciologist at Pennsylvania State University.

If more ice is lost at the margins than gained at the core, the ice sheet shrinks, ultimately affecting albedo as (depending on the underlying geography) lakes form, some rockbed is exposed and areas are reconquered by the ocean.

So if the margin was lost without ice loss at the center, the new margin having lost its support would become very unstable and the whole ice sheet would to have to lose volume to establish a new equilibrium.

«We were able to see for the first time that there is widespread thinning at the margin of the Greenland ice sheet throughout this region.

The ice sheet is almost 2,400 kilometres long in a north - south direction, and its greatest width is 1,100 kilometres at a latitude of 77 ° N, near its northern margin.

Cartoon of different paleoenvironmental scenarios of sea ice and ice sheet extent at the East Siberian Continental Margin / Southern Lomonosov Ridge area.

At present, most mass loss from ice sheets occurs at their marine margins, through iceberg production and melting by the oceaAt present, most mass loss from ice sheets occurs at their marine margins, through iceberg production and melting by the oceaat their marine margins, through iceberg production and melting by the ocean.

«This implies that changes at the margin can affect the mass balance deep in the centre of the ice sheet,» said Dr Khan.

May I remind you that Antarctica ice sheet has net ice sheet loss from loss at margins?

At times, its southern margin included the modern sites of New York City and Chicago, and then followed quite precisely the present course of the Missouri River up to the northern slopes of the Cypress Hills, beyond which it merged with the Cordilleran Ice Sheet.

The evidence comes from a remarkable find at the margins of the Quelccaya ice cap in Peru, the world's largest tropical ice sheet.

«Since most ice sheet erosion occurs at the margin of the ice sheet, that indicated times when the ice sheet retreated,» Cook said.