Rapid glacial advance reconstructed during the time of Norse occupation in Greenland geosociety
Overlooking the iceberg-covered fjord from where the margins of Akullersuup Sermia and Kangiata Nunaata Sermia were located in the 1920s . While the Norse were in Greenland, these glaciers merged and ultimately advanced another 13 km beyond this point. Credit: James Lea.
An interdisciplinary team of researchers studied the advance of Kangiata Nunaata Sermia —the largest tidewater glacier in southwest Greenland—during a period of cooling when the Norse had settlements in Greenland. Differing from glaciers that are strictly on land, tidewater glaciers extend and flow all the way to the ocean or a sea, where they can then calve and break up into icebergs.
A river that has been abandoned due to glacier retreat. The Norse had farms in this valley, and while they were there the river would have been much larger, draining meltwater and depositing sediment directly from the ice sheet. Credit: James Lea. The period when the glacier was advancing coincided with when the Norse were present in Greenland. Prior to its maximum extent during the Little Ice Age, the researchers found that KNS advanced to a location within only 5 km of a Norse farmstead.
"So we have this counterintuitive notion that climate cooling and glacier advance might have actually helped the Norse in this specific circumstance and allowed them to navigate more of the fjord more easily," said Lea.
Brasil Últimas Notícias, Brasil Manchetes
Similar News:Você também pode ler notícias semelhantes a esta que coletamos de outras fontes de notícias.
Despite Nashville's Rapid Growth, The City's Longtime Restaurants Hold on to Their Community SpiritIn Nashville, a city quickly becoming a growing hub for tech and new residents, many of its older restaurants—the dives, the meat-and-threes—are trying to hold on to the small-town community spirit:
Consulte Mais informação »
Renault halts activities in Russia in rapid U-turn | AutocarMove comes after it restarted production in Russia only this week; it's also considering options regarding 67% Avtovaz stake
Consulte Mais informação »
Metro making plans for rapid bus service along elevated busway on south side of I-10 between Uptown and downtownOfficials plan elevated busway along I-10, on south side, with shared stations downtown,...
Consulte Mais informação »
Why Did Vikings Mysteriously Leave Greenland? We May Finally Know The ReasonFor the better part of four centuries, Greenland's southern coast defined the westernmost edge of Viking occupation.
Consulte Mais informação »
Greenland’s Vikings may have vanished because they ran out of waterFrom plague to pirate raids, the mysterious disappearance of Norse settlers in the 14th Century has been linked to many factors. Now, researchers have discovered an additional element that might have helped seal their fate: drought.
Consulte Mais informação »