A Regional Seismic Experiment in India to Increase Knowledge of Velocity Structure
WESTON GEOPHYSICAL LEXINGTON MA
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Weston Geophysical Corporation, Cambridge University and India Institute of Astrophysics formed a consortium in 2000 to deploy a network of high-quality broadband seismometers distributed across India. This network began operation in April 2001, and is now fully operational providing important data for studies focusing on the characterization of the velocity structure and propagation of seismic waves throughout Southern Asia. Each station consists of a Guralp CMG-3TD digital output seismometer plus a Storage and Acquisition Model SAM data logger. The sensors possess a broadband velocity response between 0.008 and 50 Hz, continuously record at 100 samplessecond, and are time-stamped using a GPS receiver. The data are archived on nine or 18 GB disks, which are changed at intervals of approximately six months. This report consists of two parts. The main text provides an introduction to the goals of the project and a review and summary of the highlights of the various research objectives that were accomplished. The research results are discussed in detail within the papers and presentations contained in Appendix A.