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Attenuation of coda waves in the Dead Sea region

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 Q_c = 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 Q_ß measurements, Q_c might be considered as a first approximation of Q_ß for the region. For short hypocentral distances, r < 20 km, rapidly increasing Q_c with lapse time, t, has been observed.

This article has been cited by other articles:

				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. [Abstract] [PDF]