掲載雑誌(和):日本地震工学シンポジウム論文集
Vol:11巻
年: 2002年
頁: 157-162頁
著者(和): 中村 亮一,八代 和彦
タイトル(和): 観測記録にみられる短周期地震動の方位依存性−ほぼ同一の位置・規模の2 地震のスペクトル振幅比−
抄録(和): -
キーワード(和): 方位依存性,短周期地震動,スペクトル振幅比,地震動のバラツキ
掲載雑誌(英): THE EARTHQUAKE ENGINEERING SYMPOSIUM PROCEEDINGS
著者(英): Ryoichi Nakamura, Yashiro Kazuhiko
タイトル(英): RADIATION PATTERN OF SEISMIC MOTION IN SHORT PERIOD RANGE -SPECTRAL RATIO OF TWO SAME LOCATION AND MAGNITUDE EARTHQUAKES-
抄録(英): Firstly, We study spectral ratio of two same location and magnitude earthquakes using the K-NET strong motion data. The spectral ratios in short periods are clearly changed with azimuth from stations to epicenter. This phenomenon is harmony with theoretical consideration by Koyama(1987). Secondly, we obtained standard deviation of variability of spectral ratio,.and estimated source spectrum variability, not stress drop but radiation pattern, as 1 σ=0.28-0.35 in short periods.
キーワード(英): Radiation pattern, Seismic motion, Short period, Variability
記事区分: -
区分: 委員会論文集