Coda Q from educational seismograph network around Koyna–Warna, western India
We computed the coda wave attenuation ( Q C ) using reservoir-induced seismicity of the Koyna–Warna region in the western part of the Indian shield. We analyzed 484 local seismograms recorded by 16 broadband seismic stations at central frequencies 1.5, 3, 6, 12, and 24 Hz for lapse time window lengt...
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| Veröffentlicht in: | Journal of Earth System Science 2023-09, Vol.132 (3), p.98, Article 98 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | We computed the coda wave attenuation (
Q
C
) using reservoir-induced seismicity of the Koyna–Warna region in the western part of the Indian shield. We analyzed 484 local seismograms recorded by 16 broadband seismic stations at central frequencies 1.5, 3, 6, 12, and 24 Hz for lapse time window lengths 30s, 40s, 50s, and 60s using the single-backscattering method (Aki and Chouet 1975). The results show that spatial variation of
Q
C
, increases from west to east, and north to south in the study region. Our lapse time-dependent of
Q
C
estimates are (138.05±37.41)
f
(1.07±0.07)
, (191.18±45.24)
f
(1.00±0.07)
, (240.07±61.50)
f
(0.95±0.08)
, and (299.42±76.32)
f
(0.88±0.07)
for 30s, 40s, 50s and 60s, respectively. The results show that low
Q
C
at low frequencies ( |
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| ISSN: | 0973-774X 0253-4126 0973-774X |
| DOI: | 10.1007/s12040-023-02108-y |