Estimation of source; path and site effects at MASE array stations: a comprehensive study
Por:
Ortiz-Aleman, C., Reyes-Olvera, M., Iglesias-Mendoza, A., Orozco-Del-Castillo, M. G., Hernandez-Gomez, J. J.
Publicada:
1 ene 2017
Resumen:
A parameterized source and path effects inversion method based on the
use of global optimization techniques is presented. We applied this
method on velocity data from various seismic events collected between
August, 2005 and April, 2007 in Mexico by the regional MesoAmerican
Subduction Experiment (MASE) seismic network and other stations from the
permanent Mexican Seismological Survey Network (SSN). The source, path
and site parameters corresponding to the S wave amplitude spectra of 219
velocity seismic records (162 from MASE and 57 from SSN) were estimated
by means of a generalized inversion approach. The simultaneously
inverted parameters from the records of 55 stations shows a significant
agreement between the observed and calculated spectra, which supports
their realiability. Nakamura's method was used to compute an initial
guess for the generalized inversion. Comparisons between Nakamura's
technique and parameterized source and path effects inversion by using
simulated annealing method were also established. Finally, a frecuency
dependent attenuation relationship for the study area was computed by
using a genetic algorithm inversion approach.
Filiaciones:
Inst Mexicano Petr, Eje Cent Lazaro Cardenas, 152 San Bartolo Atepehuacan, Delegacion Gustavo A Mad, Cdmx, Mexico
Univ Nacl Autonoma Mexico, Inst Geofis, Ciudad Univ, Delegacion Coyoacan 04510, Cdmx, Mexico
Inst Politecn Nacl, Ctr Desarrollo Aeroespacial, Belisario Dominguez 22, Delegacion Cuauhtemoc 06010, Cdmx, Mexico
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