Publication Date:
2021-05-19
Description:
By using the results of the simulations of tides and tsunamis in the Seto Inland Sea, we estimate the
maximum current speeds induced by both tides and tsunamis around about 250 caldrons, of which
formation processes were considered by Yashima (1994). Estimating a correlation between maximum
current speeds and the depths of the caldrons, we examine the contributions of the currents induced by
tides and tsunamis to the formations of caldrons in the Seto Inland Sea.
The following results are obtained.
1) Concerning the caldrons laying in the center of the straits, a comparatively high correlation is found
between maximum tidal currents and the depths of caldrons. This supports Yashima (1994), which
concluded most of caldrons in the Seto Inland Sea were created by tidal erosion.
2) We find that the secondary undulations are generated by the resonance of tsunamis in some areas in
the Seto Inland Sea, and strong currents occurred around the nodes of the undulations, which are usually
formed at the mouths of small bays. It is high likely that the caldrons at these points were created by the
strong currents of tsunamis.
3) The currents induced by both tides and tsunamis are weak around the caldrons located off the capes.
Description:
Published
Repository Name:
AquaDocs
Type:
Report
,
Refereed
Format:
pp.11-26
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