学会誌「自然災害科学」

四国における歴史津波(1605慶長・1707宝永・1854安政)の津波波高の再検討

Reexamination of The Heights of The 1605, 1707 and 1854 Nankai Tsunamis along the Coast of Shikoku Island

村上 仁士*・島田 富美男**・伊藤 禎彦***・山本 尚明****・石塚 淳一*****

Hitoshi MURAKAMI*, Tomio SHIMADA**, Sadahiko ITOH***, Naoaki YAMAMOTO**** and Jun'ichi ISHIZUKA*****

Abstract

The data on the 1605 Keicho Tsunami, 1707 Hoei Tsunami and 1854 Ansei Nankai Tsunami on Shikoku island were extracted from the newly discovered historical documents on these tsunamis. The inundation heights of these tsunamis measured in many villages were reexamined and reestimated by field investigation.

Accurate data which were useful for checking the validity of the numerical simulation on the historical tsunamis were offered.

As the result, the inundation heights of these tsunamis were greater in comparison with the 1946 tsunami heights at almost all of the surveyed points. This fact should be reconsidered in the future planning of the tsunami prevention.

キーワード:

Key words: