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Bulletin of the Seismological Society of America; April 1988; v. 78; no. 2; p. 770-779
© 1988 Seismological Society of America
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Attenuation of coda waves in the Dead Sea region

TORILD VAN ECK

SEISMOLOGICAL DIVISION INSTITUTE FOR PETROLEUM RESEARCH AND GEOPHYSICS, P.O. BOX 2286, 58 122 HOLON, Israel

Abstract

Coda waves of local small earthquakes in the Dead Sea region, part of the Jordan rift structure, show frequency invariant codas, that is Qc = Q0(f/f0)n, with Q0 = 65 ± 5, f0 = 1 Hz and n = 1.05 ± 0.04 for hypocentral distances between 10 and 55 km, and lapse times less than 60 sec. This justifies, for example, the use of part of the coda for relative site response studies. Lacking direct Qß measurements, Qc might be considered as a first approximation of Qß for the region. For short hypocentral distances, r < 20 km, rapidly increasing Qc with lapse time, t, has been observed.




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W. B. AMBEH and J. D. FAIRHEAD
Coda Q estimates in the Mount Cameroon volcanic region, West Africa
Bulletin of the Seismological Society of America, October 1, 1989; 79(5): 1589 - 1600.
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