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 11. Two cross-sectional views of seismicity along the AA' and BB'
profiles (Fig. 9) in the
Hualien area of central eastern Taiwan. Background is a projection in gray scale
of the 3D VP model of Kim
(2003). Data shown are from 1993
to 1995 for (a) the original CWB catalog located using a 1D model
(Y. Chen, 1995) and CWB stations, (b) the relocated
CWB catalog data using the 3D VP and
VS models of Kim
(2003) and CWB
stations, (c) the original PANDA II data using the 1D model of Yeh
and Tsai (1981) and PANDA
II stations, and (d) the relocated PANDA II data using the 3D
VP and VS models of Kim
(2003) and PANDA II
stations. The local seismic array recorded two to three times more earthquakes
than the island-wide CWB network. Using only CWB stations,
hypocenters along the AA' and BB' sections do not show significant
differences between (a) and (b). Hypocenters shown in (b) may be relocated
slightly deeper than in (a). There are significant difference in seismicity
between (a, b) and (c, d) when local seismic-array data and array stations are
used. Well-defined steeply west-dipping active faults can be identified easily
from (c) and (d) but are not apparent from (a) or (b). Hypocenters are more
clustered and extend deeper in (d) than in (c).
