Crustal deformation associated with the earthquake off Urakawa, March 21, 1982.

Abstract

This earthquake (mag 7.1) caused crustal deformation in the form of vertical displacement and land-surface change such as fissure, landslide, cliff collapse, etc. Regional differences of damage ratio were recognizable in the stricken area. The damage ratio is high in the area in which the representative structural trend is parallel to the strike of main hypocentral fault plane. The damage ratio is low in the area in which the structural trend crosses the strike of main hypocentral fault plane. Data from re-levelling show that the Higashi-Shizunai area is corresponds to the center of conspicuous regional uplift. -from English summary