Bulletin of the Seismological Society of America; February 2006; v. 96; no. 1;
p. 288-305; DOI: 10.1785/0120040102
© Seismological Society of America
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Figure 8. Uncertainties of earthquake relocation using 3D models (ERX,
ERY, and ERZ) versus earthquake number in a chronological
order in the database. The averaged ERX, ERY, and
ERZ is 0.24 km, 0.30 km, and 0.48 km, respectively. The completion of
the upgrade, expansion, and densification of the regional seismic network in the
NMSZ since the time around earthquake number 500 is probably
contributing to the significant reduction of the location uncertainties to
mostly below the averaged value.