Journal of Natural Disaster Science

HIGH TIDE AND LIFE RISK, REFUGE WARNING IN RELATION TO THE ISE BAY TYPHOON

Yoshito TSUCHIYA
Professor, Disaster Prevention Research Institute, Kyoto University, Kyoto
and
Takashi YASUDA
Assistant Professor, Department of Civil Engineering, Faculty of Engineering, Gifu University, Gifu

(Received 25 December, 1980, and in revised form 10 January, 1981)

Abstract

To explore the role of efficiency of the so-called soft countermeasures in storm surge disasters, firstly the actual exciting cause by disasters is clarified by reference to the Ise Bay Typhoon Disaster occurred in 1959 causing the highest death toll by storm surges in Japan. Secondly the coastlands bordering Ise Bay are divided into units according to administrative districts and the numbers of dead and missing persons in each district are counted separately in order to obtain the relationship between life risk and accuracy and thoroughness of disaster information. Relations between transmission of the evacuation order, disaster information, maximum tidal level, actual state of the disaster and life risk are also established. Finally, the positive effects of the soft countermeasures are elucidated.

Key words

life risk, storm surge, high tide, refuge warning, Ise Bay typhoon