March 15, Timo Lieber Visit Greenland on the right summer day, and you could see a billion-gallon lake disappear before your very eyes. Glaciologists saw this happen for the first time in , when a 2. Researchers now see such events as a regular part of Greenland's increasingly hot summer routine; every year, thousands of temporary lakes pop up on Greenland's surface as the surrounding ice melts, sit around for a few weeks or months, and then suddenly drain away through cracks in the ice sheet underneath. Earth's Vanishing Ice ] On a recent expedition, however, researchers saw an alarming new pattern behind Greenland's mysterious disappearing lakes:
Arctic’s strongest sea ice breaks up for first time on record | World news | The Guardian
What happens to the water that finds its way from the melting ice surface to the bottom of the ice sheet is a crucial question for glaciologists like me. But because doing this type of research requires studying the bottom side of a vast and thick ice sheet, my colleagues and I have developed relatively unique research techniques. Our approach is to mimic the alpine style of mountaineering to do our polar research. That involves a small group of self-sufficient climbers who keep their loads light and depend on speed and efficiency to achieve their goals.
Petrunin, GF Greenland's lithosphere has hot depths which originate in its distant geological past and cause Greenland's ice to rapidly flow and melt from below. To understand Greenland's ice of today researchers have to go far back into Earth's history. The island's lithosphere has hot depths which originate in its distant geological past and cause Greenland's ice to rapidly flow and melt from below.
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