Joint Magnitude Determination and Analysis of Variance for Explosion Magnitude Estimates
Seismic data laboratory rept.
TELEDYNE GEOTECH ALEXANDRIA VA SEISMIC DATA LAB
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A method of relative magnitude determination using all available data for a limited source area is proposed. The attenuation factor B, event terms Fj, and station terms Ci for the linear model Xij Ci Fj H - BRij are solved simultaneously by an interative least-squares procedure here Xij is the logarithm of the amplitude and Rij is the logarithm of the distance. The method is analogous to joint epicenter determination, and so is termed joint magnitude determination JMD. The JMD method was applied to Seismic Data Laboratory SDL data from North American stations for Nevada Test Site explosions.
- Seismic Detection and Detectors