THE RELATIONSHIP OF EARTHQUAKE DAMAGE DUE TO 1994 FAR-OFF SANRIKU EARTHQUAKE AND GROUND CHARACTERISTICS

This study examines the relationship between earthquake damage of Hachinohe city in Aomori prefecture due to the 1994 Far-Off Sanriku Earthquake and geological characteristics based on microtremor measurement and response analysis using multiple reflection theory. It is concluded that 1) Water supply damage is more affected by boundary of the ground characteristics than predominant period and acceleration of seismic wave. 2) Ground motion spectrum depends on thickness and hardness of soil layers shallower than bearing stratum (N-value 50). 3) Damage on structures is influenced by predominant period and acceleration of seismic wave. So microtremor measurement is very effective for estimation of seismic damage.