caa a22 4500 477047858 CHVBK 20180405111335.0 cr unu---uuuuu 170330e19960801xx s 000 0 eng 10.1007/BF00878840 doi (NATIONALLICENCE)springer-10.1007/BF00878840 Baskoutas Ioannis Seismological Institute, National Observatory of Athens, 11810, Athens, Greece aut Dependence of coda attenuation on frequency and lapse time in central Greece [Elektronische Daten] [Ioannis Baskoutas] The dependence of coda attenuationQ c on frequency and lapse time was studied. Data from small local earthquakes, recorded at three stations (VMR, VSI and VFI) of the VOLNET network operating in central Greece, were used.Q c was estimated by applying the single scattering model to bandpass-filtered seismograms, over a frequency range of 1 to 12 Hz. Analysis was performed every 10 s until the end on overlapping time windows.Q c is found to depend on frequencyf in Hz according to a power law,Q c =Q 0 f n . ObservedQ 0 ranges from 30 to 100 and the powern ranges from 0.90 to 0.70.Q 0 increases andn decreases with lapse time increasing. A strong dependence ofQ c on lapse time was also found. In the frequency range of 1 to 8 Hz and at a short lapse time,Q c values were found to be similar for all three stations. On the other hand, at the longest analyzed time window (50 s), the estimatedQ c values show a discrepancy which is more obvious at a higher frequency band. The scattering coefficient around the central station VSI is found to range from 0.029 to 0.0041 km−1.Q c from the single scattering model andQ s from the amplitude ratio of directS to coda waves for the VSI station are similar. We believe dependence of coda attenuationQ c on frequency and lapse time is caused by a combination of geotectonic features and depth variation asQ s . Birkhäuser Verlag, 1996 Coda nationallicence attenuation nationallicence lapse-time dependence nationallicence frequency dependence nationallicence Greece nationallicence pure and applied geophysics Birkhäuser-Verlag 147/3(1996-08-01), 483-496 0033-4553 147:3<483 1996 147 24 https://doi.org/10.1007/BF00878840 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00878840 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Baskoutas Ioannis Seismological Institute, National Observatory of Athens, 11810, Athens, Greece aut NATIONALLICENCE 773 0- pure and applied geophysics Birkhäuser-Verlag 147/3(1996-08-01), 483-496 0033-4553 147:3<483 1996 147 24 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer