STRONG GROUND MOTIONS OBSERVED AT TEMPORARL STATIONS IN AOMORI PREFECTURE DURING THE 2011 OFF THE PACIFIC COAST OF TOHOKU EARTHQUAKE

Abstract

Author has been developing temporary strong ground motion observation site around Aomori prefecture with a specific purpose for each site. During the 2011 off the Pacific coast of Tohoku earthquake, six accelerograms were obtained in four area, those are Higashidori-mura, Tohoku-machi, Aomori city, and Hirosaki city. The maximum PGA of observed data is 168cm/s², equivalent seismic intensity defined by JMA is 5.0. Though these values are not significant, obtained ground motions meet purposes. In this paper, those accelerograms are introduced and characteristics of ground motions at each site are explained with estimated ground structure.