On the Phantastic Fault in the Sagami Bay

[摘要] The horizontal shift of the dislocation which accompanied the destructive K. Wanto earthquake of 1923 has been estimated to be 8 meters by Prof. Imamura and Mr. Kishinouye1) assuming the existence of a fault. This estimation is however somewhat doubtful.The method which prof. Imamura used for estimating the horizontal shift is as follows:First, stations which are situated on or near the straight line drawn at right angles to the assumed fault line through the point of its maximum shift were selected. Denothing the distance of any one of these stations from the assumed fault line by x, and the shift component at the station parallel to the fault line by y, two branches of curve showing the relation between x and y were obtained by plotting point (x, y) as shown in Fig. I. The intercept of the axis of y by these branches was thought to represent the amount of the maximum shift.

[学科分类] 大气科学