Journal of Natural Disaster Science

CHARACTERISTICS OF HEAVY RAINFALL AND DEBRIS HAZARD

Setsuo OKUDA
Professor
Kazuo ASHIDA
Professor
Yukio GOCHO
Associate Professor
Kazuo OKUNISHI
Associate Professor
Toyoaki SAWADA
Research Assistant
and
Koji YOKOYAMA
Scientific Technician, Disaster Prevention Research Institute, kyoto University, Kyoto

(Received 16 November, 1979 and in revised form 29 January, 1980)

Abstract

The relationship between area and intensity of heavy rainfall in the Kinki district of Japan was investigated. Some causes and locality of heavy rainfall were discussed in consideration of this relationship. Two cases of dense occurrence of landslides caused by heavy rainfall were studied on the basis of geological and geomorphological conditions, and the local singularity of debris hazard was analyzed as the combined effects of rainfall and various physiographic factors.

Key words

heavy rainfall, maximum precipitation, area of rainfall, landslide, landslide density, multivariate analysis, debris hazard