Rapid Estimation of Earthquake Source Parameters from Pattern Analysis of Waveforms Recorded at a Single Three-Component Broadband Station, Port Vila, Vanuatu

摘要

The present study deals with rapid, automatic, estimation of some earthquake parameters (location, focal depth, and magnitude) in a region of rather high seismic activity, in quasi-real time, through the analysis of incoming broadband records. The method can be applied, in particular, in poorly instrumented countries with high seismic-risk potential. It can also be applied when the analysis of a very important flow of data requires rapid, sophisticated, preferably automatic, data processing. The method requires, as a minimum, a three-component broadband seismographic station and a sufficiently populated database, that is, an instrument operating for a time long enough to have accumulated an appropriate data set, used to construct the knowledge base. The more extensive the knowledge base, the better the accuracy of the method.