Source phase and amplitude anomalies of long-period surface waves

Details Source phase and amplitude anomalies of long-period surface waves Source phase and amplitude anomalies of long-period surface waves

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1575u&link_type=abstract

Geophysical Research Letters (ISSN 0094-8534), vol. 19, no. 15, Aug. 3, 1992, p. 1575-1578.

Physics

7

Love Waves, Propagation Modes, Rayleigh Waves, Seismograms, Wave Propagation, Coupled Modes, Periodic Variations, Perturbation Theory, Phase Velocity, Surface Waves

Scientific paper

In addition to the Fermat phase anomaly and the amplitude anomaly produced by geometric focusing and defocusing along the propagation path, long-period surface waves on a laterally heterogeneous earth exhibit phase and amplitude variations due to the deviation in takeoff azimuth of the ray at the source. The resulting perturbation in source phase is generally small enough to be ignored; however, the source amplitude anomaly may be comparable to that produced by focusing and defocusing. Adding the source anomaly significantly reduces the variance of amplitude measurements performed on a large suite of synthetic vertical-component coupled-mode seismograms. Future tomographic analyses that incorporate amplitude measurements should account for this effect.

Affiliated with

Also associated with

No associations

Rating

Source phase and amplitude anomalies of long-period surface waves does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Source phase and amplitude anomalies of long-period surface waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Source phase and amplitude anomalies of long-period surface waves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1166846