Seismic Calibration of Group 1 IMS Stations in Eastern Asia for Improved IDC Event Location
MAXWELL TECHNOLOGIES INC SAN DIEGO CA
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A Consortium of institutions which includes Maxwell Technologies, Inc., Massachusetts Institute of Technologys Earth Resources Laboratory ERL, Weston Geophysical Corporation, the Russian Institute for Dynamics of the Geospheres IDG, the Department of Geophysics of Peking University, and the Seismological Bureau of Sichuan Province has been assembled to conduct a research program directed toward the seismic travel time calibration of the 30 Group 1 IMS stations of eastern Asia. A carefully crafted scientific approach to this complex problem has been formulated in which rigorous seismological and statistical analyses of 3-D velocity models established for the regions surrounding the IMS stations of interest will be formally integrated with unique calibration data sets which will be provided by our international Consortium members to provide robust estimates of source-region specific station corrections SSSCs, together with quantitative measures of the uncertainties in those estimates. A rationale for assigning priorities to the IMS stations to be investigated has been established, and a staged program of deliverables has been formulated in which preliminary calibration results for these priority stations will be provided six months after contract award and updated and refined on a regular basis throughout the three year performance period. We are currently assembling a preliminary 3-D velocity model of the entire region which is composed of a global background model on a 5 deg-by-5 deg grid Stevens and McLaughlin, 1999, supplemented by more detailed models in regions where they are available.
- Seismic Detection and Detectors