The seismic quality factors Q used in many applications of exploration seismology are not
automatically equivalent. We identified three groups of usage of the concept of a Q:(1) a …

A new method is proposed for the solving of elastic and anelastic parameters of a medium
between two seismometers, one in a borehole and one at the surface. This allows us to …

Seismic shear-wave velocity as a function of depth for generic rock sites has been estimated
from borehole data and studies of crustal velocities, and these velocities have been used to …

Site-over-reference techniques are commonly used to characterize site effects. In these
techniques, the choice of reference site significantly affects the amplification estimates …

We performed field measurements using the modified method of spectral ratios to estimate
shallow seismic Q. Three component seismograms from artificial sources were recorded to …

Avcılar is the suburb of Istanbul that was most heavily damaged during the August 17, 1999
Mw 7.4 Izmit earthquake. Strong ground motion caused fatalities and damage in Avcılar …

Displacement spectra of earthquakes recorded by the French accelerometric network at
regional scale are modeled as the product of source, propagation (including geometric and …

High-frequency spectral decay factor, kappa (k), in the accelerograms of the Wenchuan
mainshock was measured using strong motion data from 52 stations within 311 km of the …

Kappa is a one‐parameter estimator of the spectral amplitude decay with frequency of a
seismogram. Low values (∼ 5 ms) indicate limited attenuation of high‐frequency energy …

This tutorial was the first in a series of invited contributions that summarized the state of the
art in various areas of exploration geophysics, sponsored by the SEG Research …