HR: 1400h
AN: S23A-13 [Abstracts]
TI: The Texcoco Seismic Array: Analysis of the Seismic Movement in the Deep Sediments of Mexico Basin.
AU: * Flores-Estrella, H
EM: hflorese@gmail.com
AF: Departamento de Sismologia, Instituto de Geofisica, Universidad Nacional Autonoma de
Mexico, Ciudad Universitaria, Mexico City, D.F 04510, Mexico
AU: Cardenas-Soto, M
EM: mcardenass@gmail.com
AF: Departamento de Geofisica, Division de Ciencias de la Tierra, Facultad de Ingenieria,
Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Mexico City, D.F 04510, Mexico
AU: Lomnitz, C
EM: cinna@prodigy.net.mx
AF: Departamento de Sismologia, Instituto de Geofisica, Universidad Nacional Autonoma de
Mexico, Ciudad Universitaria, Mexico City, D.F 04510, Mexico
AB:
The seismic movement in the Lake Zone of the Mexico Basin is characterized by long durations and late energy
arrivals; many efforts have been made to find the origin of these late waves. In 1997 the Texcoco Seismic Array
(TXC) was installed in the former Lake of Texcoco, in the northeastern part of Mexico Basin. It is a natural reserve
formed by the same lacustrine clays of the Lake Zone in Mexico City, however we consider TXC as a virgin site as
there are no buildings near, and there is almost no human activity. We analyzed 7 earthquakes recorded at TXC in
two instrumental arrays, to identify late energy arrivals near the fundamental period and we also analyzed these
pulses with F-K method to estimate the phase velocity and its origin.
DE: 7212 Earthquake ground motions and engineering seismology
DE: 7255 Surface waves and free oscillations
SC: Seismology [S]
MN: 2007 Joint Assembly