| Attenuation relations for horizontal peak ground acceleration and response spectrum in northeastern Tibetan Plateau region |
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| 作者姓名： | 俞言祥 汪素云 |
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| 作者单位： | Institute of Geophysics，China Earthquake Administration，Beijing 100081，China，Institute of Geophysics，China Earthquake Administration，Beijing 100081，China |
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| 基金项目： | The Special Funds for Major State Basic Research Project under Grant No. 2002CB412706 and National Natural Science Foundation of China (40374017). |
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| 摘 要： | Introduction Developing local attenuation relations of ground motion is one of the key steps in seismic hazard assessment. Because of inadequate strong ground motion records in China, the attenuation relations used in China are usually developed by using the transforming method (Hu, Zhang, 1983; HU, ZHANG, 1984). To use this method, we need to have both the attenuation relation of seismic intensity for the studied region and the attenuation relations of seismic intensity and ground mo-tion…
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| 收稿时间： | 11 September 2003 |
| 修稿时间： | 12 April 2004 |
Attenuation relations for horizontal peak ground acceleration and response spectrum in northeastern Tibetan Plateau region |
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| Yu Yan-xiang,and Wang Su-yun.Attenuation relations for horizontal peak ground acceleration and response spectrum in northeastern Tibetan Plateau region[J].Acta Seismologica Sinica(English Edition),2004,17(6):651-661. |
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| Authors: | Yu Yan-xiang and Wang Su-yun |
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| Institution: | Institute of Geophysics, China Earthquake Administration, Beijing 100081, China |
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| Abstract: | The seismic intensity attenuation relations in northeastern Tibetan Plateau region are established by a regression analysis on isoseismal data. Then the attenuation relations for horizontal peak ground acceleration and short-period response spectrum for western North America are derived based on the database of HUO Jun-rong and strong mo-tion data from recent earthquakes. The attenuation relations of long-period response spectrum for western North America are developed by analyzing the broadband digital seismic recordings of southern California. By integrat-ing the short-period and long-period attenuation relationships, the attenuation relations for horizontal acceleration response spectrum in the period range of 0.04~6 s for western North America are established. The attenuation equation that accounts for the magnitude saturation and near-field saturation of high frequency ground motion is used. Finally the attenuation relations for horizontal peak ground acceleration and response spectrum for the region of northeastern Tibetan Plateau are developed by using the transforming method. |
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| Keywords: | attenuation relation response spectrum northeastern Tibetan Plateau |
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