Characteristics of high-frequency attenuation in the Dead Sea Basinстатья
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Дата последнего поиска статьи во внешних источниках: 8 декабря 2021 г.
Аннотация:In this study, we derive the characteristics of high-frequency attenuation and excitation of ground motion for the Dead Sea Basin (DSB) area by regressing the peak amplitudes of narrowband-filtered velocity seismograms measured around the shear wave arrivals.We analyzed about 2000 seismograms from 43 local earthquakes in the magnitude range of MW = 0.9–4.5 that occurred in and around the DSB. The regional crustal attenuation is modeled with a frequency-independent piece-wise continuous linear geometrical spreading function and a frequency-dependent quality parameter Q. Our analysis exhibits that S wave attenuation in the DSB has irregular behavior with the effects of arrivals of supercriticalreflections.