The southern tributary actually drains a larger portion of Greenland's central ice sheet, so a retreat there could lead to a more substantial ice discharge.

实际上南部支流外流了更多格陵兰岛中心冰原的水源，所以那边的冰川消退会导致更大规模的冰流量。

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The three glaciers that Hamilton and Stearns measured account for about a fifth of the discharge from the entire Greenland ice sheet.

汉密尔顿和斯蒂尔恩斯测量的三大冰川约占整个格陵兰冰盖流量的五分之一。

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Thus scientists are keen to understand if the Danish-owned Arctic island (Greenland map) is losing more ice mass through melting and discharge of glaciers than it is gaining from fresh snowfall.

因此科学家们非常了解一旦居住着丹麦人的北极极地的冰雪越来越多地消融掉，那么通过新的降雪所获得的雪量相比之下是非常少的。

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They used satellite data concentrating on Greenland's coastline to examine how fast the thinning is happening, and they have found that the flow-speed of 12 glaciers, which together account for about half the discharge of water from the ice sheet, is increasing and fast.

ECONOMIST: Climate change (II)