A team of Ohio State University researchers has returned from an expedition in southeastern Alaska with the longest ice core ever drilled from a mountainous glacier.
The core measures 460 meters (1,509 feet) and is 150 meters (492 feet) longer than the previous longest core - a record of ice from the Guliya ice cap in western China that eventually relinquished a climate record stretching back 760,000 years - the oldest such record retrieved to date.
Until the new core is analyzed in detail, scientists wont know if it exceeds the historic record provided by the Guliya core, but visible evidence in the new core itself suggests that the ice might reach back through several ice ages.
Lonnie Thompson | EurekAlert!
Further information:
http://www.nsf.gov/od/opp/
http://www.nsf.gov/
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