Source time functions of large Mexican subduction earthquakes, morphology of the Benioff zone, age of the plate, and their tectonic implications
Por:
Singh S.K., Mortera F.
Publicada:
1 ene 1991
Resumen:
Studies source parameters of large, shallow Mexican subduction zone earthquakes (95°W to 106°W) which occurred between 1928 and 1986 by modeling the P waves recorded on Galitzin-Wilip seismograph in DeBilt (DBN), Holland. All earthquakes are shallow (H ~ 10 to 20 km). The ratio of surface wave to body wave seismic moment (Mos/MoP), which is a measure of long- to short-period radiation, is smaller in Oaxaca (~ 1.5 ± 0.5) than in the regions northwest of 99°W (~ 3.1 ± 1.3). These results suggest a change in the plate interface characteristics near 99°W. -from Authors
Filiaciones:
Singh S.K.:
Instituto de Geofisica, Univ. Nacionale Autonoma de Mexico, Ciudad Univ., Mexico, D.F., USA, United States
Mortera F.:
Instituto de Geofisica, Univ. Nacionale Autonoma de Mexico, Ciudad Univ., Mexico, D.F., USA, United States
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