Abstract
The purpose of this paper is to explain the characters of human-behaviour during strong earthquakes in Miyagioki Earthquakes, 1978 correlating the following factors. 1) vibrations-characteristics 2) environmental conditions in which they act 3) environmental objective conditions around them 4) actors-their characters and mental process Human-behaviour during earthquakes was divided into two parts-behaviour which one takes immediately and senselessly, behaviour which one takes after judging of the dangerous conditions. Quantitative Analysis-II was adopted to decide the strength of the factors affecting each part of the behaviour. The factors strongly affecting human-behaviour are as follows : 1) recognition of the fore-shock 2) sex and age of the actor 3) actions just before the earthquakes 4) various places in which they were 5) dealing with dangerous articles 6) the weak being at the actor's side (ex. little ones, the sick, the old) 7) behaviour which one takes immediately and senselessly
