A Bayesian framework for infrasound location

Details A Bayesian framework for infrasound location A Bayesian framework for infrasound location

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010geoji.181..399m&link_type=abstract

Geophysical Journal International, Volume 181, Issue 1, pp. 399-405.

Mathematics

Probability

2

Probability Distributions, Seismic Monitoring And Test-Ban Treaty Verification, Statistical Seismology

Scientific paper

We develop a framework for location of infrasound events using backazimuth and infrasonic arrival times from multiple arrays. Bayesian infrasonic source location (BISL) developed here estimates event location and associated credibility regions. BISL accounts for unknown source-to-array path or phase by formulating infrasonic group velocity as random. Differences between observed and predicted source-to-array traveltimes are partitioned into two additive Gaussian sources, measurement error and model error, the second of which accounts for the unknown influence of wind and temperature on path. By applying the technique to both synthetic tests and ground-truth events, we highlight the complementary nature of back azimuths and arrival times for estimating well-constrained event locations. BISL is an extension to methods developed earlier by Arrowsmith et al. that provided simple bounds on location using a grid-search technique.

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