S-wave attenuation in the Sea of Marmara, Turkey

Details S-wave attenuation in the Sea of Marmara, Turkey S-wave attenuation in the Sea of Marmara, Turkey

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004pepi..142..215h&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 142, Issue 3-4, p. 215-224.

Physics

4

Scientific paper

This paper presents the estimates of frequency-dependent attenuation of S-waves for five different regions of the crust in the Sea of Marmara. The estimation method for the S-wave attenuation is based on the rate of decay of the S-wave to coda wave amplitude ratio with distance, Qs-1. The epicentral distances of the selected earthquakes are between 15 and 70km and the duration magnitudes are between 2.4 and 3.9. The quality factors, Qs, are calculated at frequencies 1.5, 3, 6 and 12Hz and a lapse time 50s. The frequency dependency of average Qs values calculated at these frequencies for five regions is 40+/-5f1.03+/-0.06. The estimated Qs values for five regions ranging from 13+/-1f1.22+/-0.05 to 94+/-3f0.83+/-0.04 indicate the regional differences in the rheology and tectonic activity of the crust.

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