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Browse MARGINS
Awards in reverse chronological order after start
date (most recent first):
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Imaging the Seismogenic Zone with Geodesy and Seismology: Two Land-Ocean
Transects Across Costa Rica and the Middle America Trench
| MARGINS Focus Area |
Seismogenic Zone |
| NSF Org |
OCE |
| Latest Amendment Date |
July 30, 1999 |
| Award Number |
9910350 |
| Award Instrument |
Standard Grant |
| Program Manager |
Bilal U. Haq
OCE DIVISION OF OCEAN SCIENCES
GEO DIRECTORATE FOR GEOSCIENCES |
| Start Date |
August 15, 1999 |
| Expires |
July 31, 2002 (Estimated) |
| Expected Total Amount |
$410,788 (Estimated) |
| Investigator |
LeRoy M. Dorman (Principal
Investigator current) |
| Sponsor |
U of Cal SD Scripps Inst
9500 Gilman Drive
La Jolla, CA 92093 |
| NSF Program |
1620 MARINE GEOLOGY AND GEOPHYSICS |
| Field Application |
0204000 Oceanography |
| Abstract |
Funds are being provided for a three year, multi-institutional,
two-transect, geodetic and seismic experiment across the Middle
America Trench and Costa Rica, immediately above the seismogenic
interface between subducting Cocos and overriding Caribbean plates.
The PIs will operate GPS, leveling, and digitally recording seismometers
on land and deploy ocean bottom seismometers (OBSs) offshore. The
goal is to map the three-dimensional distribution and nature of
the seismogenic zone, the locked or the partly locked plate interface
that generates large earthquakes, for comparison to processes that
control the distribution of seismicity and plate coupling. The imaging
of the seismogenic zone will be enhanced in the Nicoya and Osa peninsular
region because of the close approach of local coastline to the trench
axis where the large earthquakes are generated. |
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