Por favor utiliza este link para citar o compartir este documento: http://repositoriodigital.academica.mx/jspui/handle/987654321/80154
Título: Body-wave attenuation near the rupture of the 1887 Sonora, México, earthquake (Mw 7.5)
Palabras clave: Seismic attenuation
Sonora
México
Fecha de publicación: 10-Jul-2012
Editorial: Geofísica internacional
Descripción: We analized body-waves of local and regional earthquakes recorded on the Seismic Network of Northeastern Sonora, México (RESNES) are used to determine empirical attenuation functions for P and S waves in the interval of 0.4-63 Hz. The epicenters are near to the surface rupture of the May 3, 1887 (M W 7.5) Bavispe, Sonora earthquake. Seismograms of vertical and horizontal components at of ground motion hypocentral distances of 25 to 150 km were used in a nonparametric model. The reported attenuation curves indicate that the spectral amplitudes decay faster in the first 40 km of the path and show different decay rate at approximately 80 km. We found that in the upper crust the exponential dependence of Q with frequency is the same for P and S waves, namely Q ~ f 1.1, but Q S is larger by a factor of 3. In the lower crust Q is more complex, showing a strong frequency dependence below 3 Hz and a weaker frequency dependence above 6 Hz.
Other Identifiers: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0016-71692009000300004
Aparece en las Colecciones:Geofísica Internacional

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