SPECTRAL CHARACTERISTICS OF BEDROCK MOTION IN THE TOKYO METROPOLITAN AREA
SPECTRAL CHARACTERISTICS OF BEDROCK MOTION IN THE TOKYO METROPOLITAN AREA
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东京都地区基岩运动的光谱特征
DOI：
10.2208/jscej.1984.89
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
S. Kinoshita
中科院分区：
文献类型：
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作者：
S. Kinoshita
基于基岩运动的直接测量，我们提出了两个模型来预测东京大都市圈基岩在0.1-10s范围内的零阻尼波速度反应谱。这些模型分别分析了A类地震和B类地震的加速度记录。B级地震分布在菲律宾海板块及其周围。对于相同的震级和震源距离，两种模型预测的反应谱在0.5s左右的周期内相差数倍，而在大于1s的周期内，两者的反应谱更接近。对于所有地震都混合在一起的单一模型而言，对该地区的基岩运动进行正确的预测是不可能的。
Based upon the direct measurement of bedrock motions, we proposed two models to predict the zero-damped velocity response spectra in the bedrock of the Tokyo metropolitan area for the period range from 0.1 to 10s. These models were derived separately analyzing acceleration records of category A and category B earthquakes. Category B earthquakes distributed in and around the Philippine Sea plate. The response spectra predicted from the two models differ several times at the periods around 0.5s for the same earthquake magnitude and hypocentral distance, while they come closer together at the periods longer than 1s. Proper prediction of the bedrock motion is impossible for this area so far as a single model is used, where all earthquakes are mixed up.