Problems of Engineering Seismology: article

Seismic quality factor of the lithosphere and seismicity in the area of the HPP cascade of the upper and middle reaches of the Vakhsh River
O.I. Aptikaeva
Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
Journal: Problems of Engineering Seismology
Tome: 51
Number: 3
Year: 2024
Pages: 5-19
UDK: 550.34
DOI: 10.21455/VIS2024.3-1
Keywords: coda waves, Q factor, spatial and temporal variations, attenuation field, seismicity
Аnnotation: The seismic coda waves attenuation characteristic in the area of the HPP cascade in the upper and middle reaches of the Vakhsh River were studied. The short-period coda waves of the local earthquakes, recorded by the frequency-selective seismic stations in 1958–1989, and digital seismogram data earthquakes that had been occurring in region since 1989 until 2021 were analyzed. A comparative analysis of seismological data obtained by analog and digital seismic stations has been carried out. The correlation of spatial inhomogeneities of the S-wave attenuation field with tectonics and seismicity in the area of the HPP cascade and in nearby territories is considered.