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Seismic coda attenuation after the Mw=6.2 Armenia (Colombia) earthquake of 25 January 25, 1999

Author
Ugalde, A.; Vargas, C.; Pujades, L.G.; Canas, J.
Type of activity
Journal article
Journal
Journal of geophysical research
Date of publication
2002-08
Volume
107
Number
B6, ESE1-1
First page
0148
Last page
0227
DOI
https://doi.org/10.1029/2001JB000197 Open in new window
Repository
http://hdl.handle.net/2117/83596 Open in new window
URL
http://onlinelibrary.wiley.com/doi/10.1029/2001JB000197/abstract Open in new window
Abstract
Seismic wave attenuation in the central region of the Colombian Andes is studied using coda waves. Most of the events used occurred in the region on the occasion of the Armenia 25 January 1999 earthquake. The estimation of the decay rate of coda amplitudes (called coda Q-1 or Qc-1) is performed by means of the single isotropic scattering method of Sato [1977]. The attenuation parameters Qi-1 (intrinsic absorption), Qs-1 (scattering loss), and Qt-1 (total attenuation) are also estimated using the...
Citation
Ugalde, A., Vargas, C., Pujades, L., Canas, J. Seismic coda attenuation after the Mw=6.2 Armenia (Colombia) earthquake of 25 January 25, 1999. "Journal of geophysical research", Agost 2002, vol. 107, núm. B6, ESE1-1, p. 0148-0227.
Group of research
GIES - Geophysics and Earthquake Engineering

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