| NSF Org: |
EAR Division Of Earth Sciences |
| Recipient: |
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| Initial Amendment Date: | June 16, 2015 |
| Latest Amendment Date: | June 16, 2015 |
| Award Number: | 1546611 |
| Award Instrument: | Standard Grant |
| Program Manager: |
Paul Raterron
praterro@nsf.gov (703)292-8565 EAR Division Of Earth Sciences GEO Directorate for Geosciences |
| Start Date: | June 15, 2015 |
| End Date: | May 31, 2018 (Estimated) |
| Total Intended Award Amount: | $138,940.00 |
| Total Awarded Amount to Date: | $138,940.00 |
| Funds Obligated to Date: |
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| History of Investigator: |
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| Recipient Sponsored Research Office: |
1500 SW JEFFERSON AVE CORVALLIS OR US 97331-8655 (541)737-4933 |
| Sponsor Congressional District: |
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| Primary Place of Performance: |
Lainchaur Kathmandu NP |
| 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): |
EAR-Earth Sciences Research, DEEP EARTH PROCESSES SECTION |
| Primary Program Source: |
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| 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
This project is a rapid action to deploy a temporary seismological network following the Mw 7.9 earthquake of April 25, 2015 in Nepal. Data collected during the project will be made openly available to the seismological community one month after the array is uninstalled. This data collection impacts the Himalayan region known for its great seismological hazard. Aftershock deployment in the area of the 2015 earthquake will enable seismologists to conduct research, which will increase our understanding of the behavior of the Main Himalayan Thrust, a major underground fault responsible of this and other historical destructive earthquakes in the Himalayan region.
In this project 25 seismic stations will be deployed in the greater epicentral region of the April 25, 2015 earthquake, and in western Nepal where a long-standing gap has accumulated about 10 m of deficit of slip since it last ruptured in 1505. These data will be useful in particular to determine a well-constrained source model of the 2015 earthquake, define the geometry of the Main Himalayan thrust, and analyze the relationship between post-seismic deformation and aftershocks. This deployment will be closely coordinated with another rapid deployment by US universities with 20 additional seismic stations that will increase the size of the monitoring network.
PROJECT OUTCOMES REPORT
Disclaimer
This Project Outcomes Report for the General Public is displayed verbatim as submitted by the Principal Investigator (PI) for this award. Any opinions, findings, and conclusions or recommendations expressed in this Report are those of the PI and do not necessarily reflect the views of the National Science Foundation; NSF has not approved or endorsed its content.
The major goal of the project was to deploy a temporary seismic network in the rupture area of the Mw 7.9 earthquake of April 25, 2015 in Nepal, the largest earthquake to occur in the central segment of the Himalaya in 80 years. A collaborative team from the Oregon State University (OSU), U.C. Riverside (UCR), Stanford University (SU), and the University of Texas at El? Paso (UTEP) deployed 45 seismic stations across eastern and central Nepal for 11 months. The funding for the project came from NSF RAPID program. Although the NSF funded the network as two individual projects, one covering expenses for the Oregon State University and U.C. Riverside and the second the University of Texas at El?Paso and Stanford University, the work of both teams was fully collaborative.
The network, called the Nepal Array Measuring Aftershock Seismicity Trailing Earthquake (NAMASTE), consisted of a mix of instruments provided by the Incorporated Research Institutes of Seismology (PASSCAL), U.C. Riverside, UTEP and Stanford (10 co-located L22 and Episensor, 4 Episensor-only, 1 Trillium compact, 14 Guralp 3T, 5 Guralp 40T, 11 Trillium 120PA). L22 is a short-period seismometer, Episensor is an accelerometer and the rest are broad- and medium-band seismometers. The recorder sampling rates were 100 sps and 200 sps. This combination of seismometers allows various types of analyses. The deployment of the network took place in mid to end of June 2015. Altogether, we recorded 657 GB of data.
Last Modified: 08/29/2018
Modified by: John L Nabelek
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