Bulletin of the Seismological Society of America; February 2006; v. 96; no. 1;
p. 176-187; DOI: 10.1785/0120050001
© Seismological Society of America
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Figure 1. Map showing locations and focal mechanisms of the earthquakes analyzed in
this study. Gray zone delineates Mexican Volcanic Belt. Isodepth contours of the
Benioff zone (modified from
Singh and Mortera, 1991;
Pardo and Suarez, 1995) are
marked (dashed where inferred). LVIG and PNIG are seismic
stations at Laguna Verde nuclear power plant and Pinotepa Nacional,
respectively. Seismograms from TUIG, located on a noisy site, are not
used in the analysis. SCIG recorded only three of the events listed
in Table 1. A to D refer to the
four groups into which the events have been divided. Straight dashed lines,
denoted A to D, from the trench to LVIG indicate the locations of the
vertical sections on which the events are projected in Figure 4.
