Not by Fire but by Ice


Discover What Killed the Dinosaurs . . . and Why it Could Soon Kill Us


Melting of Greenland ice mimics
1920s-1940s event

Researchers see this as a cause for alarm, rather
than proof that it's simply part of a natural cycle and
not driven by humans


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Scouring through old expedition logs, maps and photos, Jason Box, an associate professor of geography at Ohio State University, found that the effects of the current warming and melting of Greenland 's glaciers also occurred following an abrupt warming in the 1920s.

Box and undergraduate student Adam Herrington, co-author on a paper presented at an American Geophysical Union meeting, concentrated on three large glaciers flowing out from the central ice sheet towards the ocean – the Jakobshavn Isbrae, the Kangerdlugssuaq and the Helheim.

"Digging through the old data, Herrington found a map from 1932 and an aerial photo from 1933 that documented how, during a warm period, the Kangerdlugssuaq Glacier lost a piece of floating ice that was nearly the size of New York 's Manhattan Island."

The fact that recent changes to Greenland's ice sheet mirror its behavior nearly 70 years ago bolsters the researchers concern that rising temperatures will speed the demise of that island's ice fields, hastening sea level rise.

      I don't understand why they see this as a cause for alarm. I think, rather,
      that it is proof that glaciers wax and wane according to a natural cycle,
      and that the changes are not driven by human activity.

See entire article:
Thanks to Steven Woodcock for this link



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Order Book l E-Mail Robert l Q & A l Book Reviews l Plant Hardiness Zone Maps l Radio Interviews l Table of Contents l Excerpts l Author Photo l Pacemaker of the Ice Ages l Extent of Previous Glaciation l Crane Buried in Antarctic Ice Sheet l Ice Ages and Magnetic Reversals l Expanding Glaciers