| Vol.4-2 |
| 徳島県浅川に遡上した1946年南海地震津波の挙動とその危険度の評価に関する研究 Behavior and Estimation of the Degree of Danger of the l946 Nankai Earthquake Tsunami Inundating Asakawa, Tokushima Prefecture |
| 村上 仁士* ・ 島田 富美男** ・ 細井 由彦* ・ 見附 敬三*** Hitoshi MURAKAMI*, Tomio SHIMADA**, Yoshihiko HOSOI* and Keizo MITSUKE*** |
Abstract
Based on the field investigation of the l946 Nankai Earthquake Tsunami
in Asakawa, Tokushima Prefecture, the characteristics of inundation heights
and the water current on land were investigated. Furthermore, the life
risk and the degree of damage to houses by tsunami in Asakawa were discussed
in detail.
As the result, the following conclusions were drawn:
（l）The inundation heights above the Mean Sea Level were in the range of
5.5－6 m at Ohta, Miura and Ina-higashi districts.
（2）The distribution of the water current vectors of the inundation area
could be fairly well reproduced by the present analysis.
（3）The life risk level by tsunami in Asakawa was almost equal to that
of death by traffic accidents in Japan.
（4）The condition of damage to houses might be estimated by knowledge of
inundation heights and the water velocities on land.
*徳島大学工業短期大学部
Technical College, The University of Tokushima
**阿南工業高等専門学校
Anan College of Technology
***徳島大学大学院
Graduate Student, The University of Tokushima
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