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 National Science
Foundation Award #9122991 |
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GISP2: Helium and Rare Gas Studies
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| Investigator(s): |
Harmon Craig (PI)
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| Sponsor: |
University of California-San Diego Scripps Inst of Oceanography, CA 92093 8585341293
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| Start Date/Expiration Date |
1992-05-01 to 1997-04-30 (amended 1996-04-19) |
| Awarded Amount to Date: |
$158,676 |
| Abstract: This award is for support of a two year project to measure the Helium concentrations and isotope ratios, Potassium/Argon ratios, and Krypton 81 ages in ice from the GISP2 core. The helium program is a search for nulls and/or reversals of the Earth's magnetic field, which should leave a strong signal in the Helium 3 to Helium 4 ratios and the Helium 3 concentrations in ice core Helium. If a geomagnetic Helium event is recorded in the ice sheets, it will provide a world-wide traceable horizon in both Greenland and Antarctica, for model studies of ice flow and for chronology. The Potassium/Argon measurements are to study gravitational fractionation of gases in the firn. The Krypton 81 dating will provide one of the first absolute ages on the GISP2 core. |
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| NSF Org: |
OPP - Office of Polar Programs |
| Award Number: |
9122991 |
| Award Instrument: |
Continuing grant |
| Program Manager: |
Julie Palais
OPP Office of Polar Programs
O/D OFFICE OF THE DIRECTOR
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| NSF Program(s): |
ARCTIC NATURAL SCIENCES, ARCTIC SYSTEM SCIENCE PROGRAM, ARCTIC SYSTEM SCIENCE PROGRAM
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| Field Application(s): |
Geological Sciences, Polar Programs-Related |
| Program Reference Code(s): |
ARCTIC SYSTEM SCIENCE PROGRAM, 5219
GLOBAL CHANGE, 1577 |
| Program Element Code(s): |
5280
ARCTIC SYSTEM SCIENCE PROGRAM, 5219
, 5219
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