ice sheets

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What ancient sediments at the bottom of the ocean can teach us about climate change

Archives 2025, Global warming, Oceans, Slider Stories, Top Stories / By

By Rachel Duckett, Dec. 20, 2025 Columbia University researchers are using grains of sediment left behind on the ocean floor millions of years ago to track the movement of icebergs through the Southern Ocean’s “Iceberg Alley,” just east of the Drake Passage between the southern tip of South America and Antarctica. As icebergs broke off …

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Oceanographer discovers how warming waters thousands of miles away increase melting across West Antarctic ice shelf

Archives 2023, Global warming, Oceans / By

By Ananya Chandhok Medill Reports, Feb. 20, 2024 How ocean currents circulate heat over thousands of miles is critical for University of Washington oceanographer Channing Prend to understand ice melt in Antarctica.  Prend’s research on the West Antarctic ice sheet revealed that heat from water thousands of miles to the north can lead to ice …

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SCIENTISTS SEARCH ANCIENT ICE FOR CLUES AS GREENLAND ICE MELT RAPIDLY INCREASES

Archives 2018 / By

The Greenland ice sheet is more than three times the size of Texas, 2 miles deep at its thickest point. And it’s melting.

Not only is it melting, but it’s melting at a rate not seen in 400 years, according to a paper published in Geophysical Research Letters in April. The study involved taking short ice core samples and examining the surface layers of snow to find out how much melting had occurred.

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