Summary: Seismological Research Letters Volume 80, Number 5 September/October 2009 707doi: 10.1785/gssrl.80.5.707
Sísmica, in Spanish (SAS)--was conceived a er the disastrous
considerable damage to the city, with the subsequent loss of
lives and major losses in the city's infrastructure.
e SAS is based on the simple observation that the epi-
which could in ict similar damage in the future, are located at
waves generated by these great earthquakes along the Paci c
uate and would not produce damage in cities and towns located
at these relatively far distances. is is the case with many of the
normally are not damaged by large earthquakes that take place
on the subduction zone.
e.g., Ordaz and Singh 1992). is
ampli cation is the result of the interaction of the incoming
seismic waves with the so , water-saturated clay soils, on which
a large part of the city is built. ese clay soils are remnants of
gradually drained to accommodate the growing urban sprawl.