| NSF Org: |
EAR Division Of Earth Sciences |
| Recipient: |
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| Initial Amendment Date: | August 1, 2006 |
| Latest Amendment Date: | August 1, 2006 |
| Award Number: | 0610031 |
| Award Instrument: | Standard Grant |
| Program Manager: |
David Fountain
EAR Division Of Earth Sciences GEO Directorate for Geosciences |
| Start Date: | August 1, 2006 |
| End Date: | July 31, 2010 (Estimated) |
| Total Intended Award Amount: | $236,776.00 |
| Total Awarded Amount to Date: | $236,776.00 |
| Funds Obligated to Date: |
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| History of Investigator: |
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| Recipient Sponsored Research Office: |
1664 N VIRGINIA ST # 285 RENO NV US 89557-0001 (775)784-4040 |
| Sponsor Congressional District: |
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| Primary Place of Performance: |
1664 N VIRGINIA ST # 285 RENO NV US 89557-0001 |
| Primary Place of
Performance Congressional District: |
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| Unique Entity Identifier (UEI): |
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| Parent UEI: |
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| NSF Program(s): |
Tectonics, EPSCoR Co-Funding |
| Primary Program Source: |
app-0406 |
| Program Reference Code(s): |
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| Program Element Code(s): |
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| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.050 |
ABSTRACT
Deformation within the Walker Lane and Eastern California shear zone in Nevada and California (western Basin and Range) accommodates a portion of the relative motion between the Pacific and North American plates. The system-wide geodetically (GPS) inferred crustal deformation rate in the northern Walker Lane is 2 to 3 times greater than the rate inferred from geologic data such as fault slip rates. Understanding the reasons behind this discrepancy is central to fully integrating these complementary constraints on continental deformation, and to rigorously identifying time-variable behavior over geologic time. In order to understand this discrepancy, this research team is developing a quantitative methodology that rigorously integrates the geodetic and geologic constraints on tectonic deformation. New GPS data are being collected in areas that lack coverage. The new and existing geodetic data will be combined with geologic constraints on fault geometry, slip rates, and paleomagnetic rotations using a block modeling quantitative framework. When geodetic and geologic data are in significant conflict - when slip rates for a single fault have different geologic and geodetic estimates - the kinematic self-consistency of the block modeling quantitative framework will be used to place constraints on how deformation patterns have changed over time.
Slow tectonic deformation of continental interiors results in sudden slip of faults (i.e. earthquakes) after long periods of interseismic strain accumulation. Precise measurement of these motions, before, during, and after earthquakes is essential for understanding the causes and controls of earthquake occurrence. By combining measurements of the location, rate, and direction of the change in shape of the land's surface between earthquakes with computer modeling that rigorously integrates geologic and geodetic data, understanding of which faults are the most likely to slip in sudden potentially damaging earthquakes in the growing Reno/Carson/Tahoe metropolitan areas can be improved.
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
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