WASHINGTON -- Scientists using data acquired by U.S. Navy submarines have reported a "striking" reduction in the thickness of Arctic sea ice, as compared with 20-40 years ago. Writing in the December 1 issue of Geophysical Research Letters, Dr. D. Andrew Rothrock of the University of Washington, Seattle, and colleagues say the average draft of the sea ice (that is, its thickness from the ocean surface to the bottom of the ice pack) has declined by 4.3 feet (1.3 meters). This represents a reduction of about 40 percent as compared with the earlier period.
The above story is based on materials provided by American Geophysical Union. Note: Materials may be edited for content and length.
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