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Intrinsic Q p seismic attenuation from the rise time of microearthquakes: a local scale application at Rio‐Antirrio, Western Greece
Author(s) -
Tselentis G.Akis,
Paraskevopoulos Paraskevas,
Martakis Nikos
Publication year - 2010
Publication title -
geophysical prospecting
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.735
H-Index - 79
eISSN - 1365-2478
pISSN - 0016-8025
DOI - 10.1111/j.1365-2478.2010.00885.x
Subject(s) - microearthquake , seismogram , geology , attenuation , seismology , rise time , regional geology , seismic wave , scale (ratio) , geodesy , tectonics , telmatology , induced seismicity , physics , optics , quantum mechanics , voltage
We determine the attenuation structure of a three‐dimensional medium based on first pulse‐width measurements from microearthquake data. Ninety‐five microearthquakes from a seventy stations local network were considered in this study. Measurements of the first half cycle of the wave, the so‐called rise time τ were carried out on high quality velocity seismograms and inverted to estimate the P‐waves intrinsic quality factor Q p . The results of this investigation indicate that first pulse width data from a local microearthquake network permit retrieval with sufficient accuracy of the heterogeneous Q p structure. The inferred attenuation variability corresponds to the known geological formations in the region.