Environmental Engineering Reference
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Fig. 12.3
Historical Earthquakes around the Nankai trough (modifi ed from Ishibashi,
2004
)
4. Development of new ocean observing technologies such as cable systems,
advanced ROV/AUV etc. (Fig.
12.5
).
5. Provide observed data such as ocean fl oor deformation derived from pressure
gauges to improve the simulation and modeling researches about the mega thrust
earthquakes (Fig.
12.6
). These ocean fl oor deformation data are quite necessary
for the data assimilation to improve simulation models.
6. Understanding of the interaction between the crust and upper mantle around sub-
duction zone.
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