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Baker & Stevens 2004
Baker, G.E. and Stevens, J.L. (2004). Backazimuth estimation reliability using surface wave polarization. Geophysical Research Letters 31: doi: 10.1029/2004GL019510. issn: 0094-8276.

Backazimuth estimates derived from surface wave polarization can be used to test association of an observed surface wave with a seismic event. However, commonly used techniques for estimating the backazimuth are subject to a number of errors and are often inaccurate. We evaluate the performance of a new algorithm for determining Rayleigh wave propagation direction from the cross-correlation of the horizontal and Hilbert transformed vertical seismograms. This proves to be more accurate and much less error-prone than current automatic processing procedures, and the cross-correlation value provides a good measure of the reliability of the backazimuth estimate. Consequently, the new algorithm will permit more reliable event association at a lower magnitude threshold.

BACKGROUND DATA FILES

Abstract

Keywords
Seismology, Seismology, Nuclear explosion seismology, Seismology, Surface waves and free oscillations
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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