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 National Science
Foundation Award #0003616 |
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Studying Byrd Glacier as a Rock-Floored Ice Stream Ending as a Calving Ice Shelf: Phase I |
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| Investigator(s): |
Terence Hughes (PI)
; James Fastook (Co-PI)
; Roger Hooke (Co-PI)
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| Sponsor: |
University of Maine, ME 04469 2075811484
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| Start Date/Expiration Date |
2001-02-15 to 2003-01-31 (amended 2001-02-13) |
| Awarded Amount to Date: |
$79,787 |
| Abstract: 0003616
Hughes
This award supports a one-year study of the floating part of Byrd Glacier, from its grounding line located halfway up a fjord through the Transantarctic Mountains to the end of its lateral rift zone on the Ross Ice Shelf beyond the fjord. Over this l00 km distance, the side boundary changes from rigid between the fjord sidewalls, to nearly free in the lateral rift zone, to deforming when the rifts are healed and Bryd Glacier becomes fully coupled to the Ross Ice Shelf. The stress field for these changing conditions will be calculated a using a gridpoint finite-element model for the Ross Ice Shelf (Thomas and MacAyeal, l982) and a flowband finite-difference model for smooth transitions from sheet flow to stream flow to shelf flow (Hughes, l998). Results of the two modeling approaches will be compared, using existing ice elevation and velocity data obtained from aerial photogrammetry, our unpublished surface mass balance data, and new velocity data obtained from Landsat imagery by the U. S. Geological Survey. This study will train one graduate student at the Masters level. |
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| NSF Org: |
ANT - Antarctic Sciences Section |
| Award Number: |
0003616 |
| Award Instrument: |
Standard Grant |
| Program Manager: |
Julie Palais
ANT Antarctic Sciences Section
OPP Office of Polar Programs
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| NSF Program(s): |
ANTARCTIC GLACIOLOGY, EXP PROG TO STIM COMP RES |
| Field Application(s): |
Polar Programs-Related |
| Program Reference Code(s): |
EXP PROG TO STIM COMP RES, 9150
UNASSIGNED, 0000 |
| Program Element Code(s): |
5116
EXP PROG TO STIM COMP RES, 9150 |
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