The accumulation of 210Pb at Summit, Greenland since 1855

The decay corrected activity of 210Pb at the time of deposition shows considerable short term variability, but no clear seasonal or annual periodicity. 210Pb activity in surface snow at this site has averaged 0.7 pCi kg-1 since 1927, but the period 1915-1927 is characterized by a steady decline from...

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Bibliographic Details
Main Author: Dibb, Jack E.
Format: Text
Language:unknown
Published: University of New Hampshire Scholars' Repository 1992
Subjects:
Atmospheric Sciences
Greenland
Dye 3
Dye-3
Ice Sheet
Online Access:https://scholars.unh.edu/earthsci_facpub/217
https://scholars.unh.edu/cgi/viewcontent.cgi?article=1216&context=earthsci_facpub
id ftuninhampshire:oai:scholars.unh.edu:earthsci_facpub-1216
record_format openpolar
spelling ftuninhampshire:oai:scholars.unh.edu:earthsci_facpub-1216 2023-05-15T16:03:04+02:00 The accumulation of 210Pb at Summit, Greenland since 1855 Dibb, Jack E. 1992-02-01T08:00:00Z application/pdf https://scholars.unh.edu/earthsci_facpub/217 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1216&context=earthsci_facpub unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/earthsci_facpub/217 https://scholars.unh.edu/cgi/viewcontent.cgi?article=1216&context=earthsci_facpub Earth Sciences Scholarship Atmospheric Sciences text 1992 ftuninhampshire 2023-01-30T21:34:30Z The decay corrected activity of 210Pb at the time of deposition shows considerable short term variability, but no clear seasonal or annual periodicity. 210Pb activity in surface snow at this site has averaged 0.7 pCi kg-1 since 1927, but the period 1915-1927 is characterized by a steady decline from higher levels. The average annual accumulation of 210Pb has markedly declined since at least 1870. Similar observation at Dye 3 suggest that 210Pb accumulation has decreased throughout this century over much of the Greenland Ice Sheet. If the records of 210Pb in the firn of the Greenland Ice Sheet are mainly reflecting the northern hemisphere atmospheric burden of 210Pb, these results will demand careful reassessment of 210Pb-based radiochronologies. -from Author Text Dye 3 Dye-3 Greenland Ice Sheet University of New Hampshire: Scholars Repository Greenland
institution Open Polar
collection University of New Hampshire: Scholars Repository
op_collection_id ftuninhampshire
language unknown
topic Atmospheric Sciences
spellingShingle Atmospheric Sciences
Dibb, Jack E.
The accumulation of 210Pb at Summit, Greenland since 1855
topic_facet Atmospheric Sciences
description The decay corrected activity of 210Pb at the time of deposition shows considerable short term variability, but no clear seasonal or annual periodicity. 210Pb activity in surface snow at this site has averaged 0.7 pCi kg-1 since 1927, but the period 1915-1927 is characterized by a steady decline from higher levels. The average annual accumulation of 210Pb has markedly declined since at least 1870. Similar observation at Dye 3 suggest that 210Pb accumulation has decreased throughout this century over much of the Greenland Ice Sheet. If the records of 210Pb in the firn of the Greenland Ice Sheet are mainly reflecting the northern hemisphere atmospheric burden of 210Pb, these results will demand careful reassessment of 210Pb-based radiochronologies. -from Author
format Text
author Dibb, Jack E.
author_facet Dibb, Jack E.
author_sort Dibb, Jack E.
title The accumulation of 210Pb at Summit, Greenland since 1855
title_short The accumulation of 210Pb at Summit, Greenland since 1855
title_full The accumulation of 210Pb at Summit, Greenland since 1855
title_fullStr The accumulation of 210Pb at Summit, Greenland since 1855
title_full_unstemmed The accumulation of 210Pb at Summit, Greenland since 1855
title_sort accumulation of 210pb at summit, greenland since 1855
publisher University of New Hampshire Scholars' Repository
publishDate 1992
url https://scholars.unh.edu/earthsci_facpub/217
https://scholars.unh.edu/cgi/viewcontent.cgi?article=1216&context=earthsci_facpub
geographic Greenland
geographic_facet Greenland
genre Dye 3
Dye-3
Greenland
Ice Sheet
genre_facet Dye 3
Dye-3
Greenland
Ice Sheet
op_source Earth Sciences Scholarship
op_relation https://scholars.unh.edu/earthsci_facpub/217
https://scholars.unh.edu/cgi/viewcontent.cgi?article=1216&context=earthsci_facpub
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