Journal of Natural Disaster Science

RELATIONSHIPS AMONG HYPOCENTRAL DISTANCES　RADIATION PATTERNS, LANDFORMS AND SEISMIC INTENSITIES ESTIMATED FROM TOPPLED TOMBSTONES AND DAMAGE TO WOODEN BUILDINGS IN THE GREAT KANTO EARTHQUAKE 1923

Toshio MOCHIZUKI
Associate Professor, Fukui Technical Institute, Fukui
Michio MIYANO
Faculty of Engineering, Tokyo Metropolitan University, Tokyo
and
Tatsuo TAJIME
Professor, Faculty of Engineering, Kanagawa University, Yokohama

(Received 22 October, 1981 and in revised form 5 April, 1982)

Abstract

The seismic intensities for the Great Kanto Earthquake of 1923, as determined by investigations of toppled tombstones and the total-collapse ratios of wooden houses, are linked. Relationships between the seismic intensities estimated from collapse ratios and from the hypocentral distances have been obtained for various types of topography. In addition, the relationships between the seismic intensities of mountainous landforms and the hypocentral distances have been used to standardize the relationships of other landforms and to obtain seismic intensity distributions in similar earthquake bedrocks. The possibility of directionality and consideration of hypocentral distance defined as the minimum distance from the fault plane.

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