In:
Bulletin of the Seismological Society of America, Seismological Society of America (SSA), Vol. 63, No. 4 ( 1973-08-01), p. 1305-1313
Abstract:
Seismic events can be relocated relative to a reference event by using the group-velocity dispersion curves of surface waves. Since group velocity is a function of the travel path, surface waves from two events in the same locale should show identical group velocities when viewed at any one seismograph station. A computer technique has been developed for comparing the group-velocity curves of any event with the curves of a reference event and for determining the relocation which causes the curves to best coincide. The method is evaluated by relocating eight intermediate-size nuclear explosions of the Nevada Test Site series. With precise curve fitting, the surface-wave locations are slightly more accurate in southern Nevada than the standard body-wave determinations. The surface-wave origin times are considerably more accurate. In areas of sparse station coverage or of many small earthquakes, the surface-wave method can be expected to improve seismic locations significantly.
Type of Medium:
Online Resource
ISSN:
1943-3573
,
0037-1106
DOI:
10.1785/BSSA0630041305
Language:
English
Publisher:
Seismological Society of America (SSA)
Publication Date:
1973
detail.hit.zdb_id:
2065447-9
SSG:
16,13
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