Leaving WAIS Divide Antarctica for the 2009-2010 Season...
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9:40
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@BrokenAeroVT 580 meters was about 2450 years ago (~440 B.C.E). At the end of the season we were at a depth of 2560 meters.
johnfegy 1 year ago
@johnfegy Just curious and last questions, not my forte...what is the age at 580 meters and how deep were your core samples at 20,000 years?
BrokenAeroVT 1 year ago
@BrokenAeroVT
There is a definitive depth-age scale established for the first 580 meters based on season chemical signals in the ice (and volcanic markers). past 580, there is modeled depth-age scale based on the average accumulation rate at the site. While not exact, It is pretty accurate (plus or minus 100 years or so).
johnfegy 1 year ago
What establishes the date of the sample, i.e. 20,000 years?
BrokenAeroVT 1 year ago