The Far-Off-Sanriku Eathquake with the magnitude 7.5 in JMA scale occurred 21:19 on December 28, 1994. The ground motion estimated as VI in JMA scale. The largest aftershock with magnitude 6.7 occurred on January 7, 1995, gave great damage to same region.The ground motion estimated as V. In Hachinohe city, complete collapse numbers of the building structures and housings were 66 at the main shock and 16 at the aftershock. Half collapse numbers were 354 at mainshock and 48 at aftershock. And partially destroyed housings were 10,756.
The Object of this study is to clarify the relartionship between this damage and the site ettects, which are topography, geology and microtremors.
1) The damages concentrated on terrace deposits and it's near field.
2) The predominant periods in the damaged area were 0.3-0.4 second.
3) The thicknesses of surface layers in the damaged area were about 10-20 m.

本稿は主に1994年三陸はるか沖地震での八戸市域の建築物の被害分布と地盤の卓越周期の関係について報告し、十勝沖地震の建築物被害分布と地盤の卓越周期の関係との関係についても合わせ報告する。

掲載元情報	八戸工業大学紀要第17巻,pp.125-138 The Bullet in of Hachinohe Institute of Technology,17,pp.125-138
カテゴリー	地域分析,建築・土木・エネルギー,災害,工学
発行年月日	1998/2/27
閲覧先	八戸工業大学学術リポジトリ
閲覧先での公開範囲	全文公開

1994年三陸はるか沖地震における建築被害と地盤の卓越周期