Good news: World’s biggest ice sheets likely more stable than previously believed – upsets previous estimates of melting and sea level

Researchers show that high ancient shorelines do not necessarily reflect ice sheet collapse millions of years ago From the Canadian Institute for Advanced Research: For decades, scientists have used ancient shorelines to predict the stability of today’s largest ice sheets in Greenland and Antarctica. Markings of a high shoreline from three million years ago, for…

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New research projects mitigation of sea level rise

Recent snowfall anomalies in Dronning Maud Land, East Antarctica Enhanced snowfall on the East Antarctic ice sheet is projected to significantly mitigate 21st century global sea level rise. In recent years (2009 and 2011), regionally extreme snowfall anomalies in Dronning Maud Land, in the Atlantic sector of East Antarctica, have been observed. It has been…

Radar mapping reveals ancient Antarctic giant fjords

From the University of Texas at Austin New map reveals giant fjords beneath East Antarctic ice sheet Scientists from the U.S., U.K. and Australia have used ice-penetrating radar to create the first high- resolution topographic map of one of the last uncharted regions of Earth, the Aurora Subglacial Basin, an immense ice-buried lowland in East…

East Antarctic Ice Sheet getting thicker from underneath

From AAAS online: Widespread Persistent Thickening of the East Antarctic Ice Sheet by Freezing from the Base Abstract An International Polar Year aerogeophysical investigation of the high interior of East Antarctica reveals widespread freeze-on that drives significant mass redistribution at the bottom of the ice sheet. While surface accumulation of snow remains the primary mechanism…