Abstract #302109

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JSM 2003 Abstract #302109
Activity Number: 191
Type: Invited
Date/Time: Tuesday, August 5, 2003 : 8:30 AM to 10:20 AM
Sponsor: Seismological Society of America
Abstract - #302109
Title: Derivation of the Covariance Matrix for MLEs for Multiple Event Location Models
Author(s): Deb Carlson*+
Companies: Pacific Northwest National Laboratory
Address: 128 Center Blvd., Richland, WA, 99352,
Keywords: multiple event location model ; hypocenter estimation ; covariance ; maximum likelihood
Abstract:

Multiple event location models (MELs) typically include event hypocenter parameters for a cluster of seismic events and station corrections to the travel time model. MEL models have become increasingly important in hypocenter estimation because they provide for the integration of high-quality calibration data. Station corrections, which account for local crustal variations, come in many forms, including traditional linear model effects and sophisticated functions of receiver, source, and local geophysical characteristics. In this presentation, we review the formulation of MEL hypocenter estimation as a maximum likelihood problem and develop the associated information matrix in the classical linear model case. This work provides the foundation for maximum likelihood estimation of hypocenter parameters in more general MEL models and their associated information matrices.

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