| 三危山断层近场地震动对敦煌莫高窟的影响研究 |
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| 引用本文： | 卢育霞,石玉成.三危山断层近场地震动对敦煌莫高窟的影响研究[J].西北地震学报,2004,26(3):260-264. |
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| 作者姓名： | 卢育霞 石玉成 |
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| 作者单位： | 中国地震局地震预测研究所兰州科技创新基地,甘肃,兰州,730000;中国地震局兰州地震研究所,甘肃,兰州,730000 |
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| 基金项目： | 科技部社会公益研究专项资金项目(2002DIB20062)，中国地震局兰州地震研究所论著编号:LC20040050 |
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| 摘 要： | 三危山断层距敦煌莫高窟仅约3km。本建立横向均匀成层的地震断层模型，利用随机有限断层方法，预测三危山断层发生5．5级、6．0级、6．5级地震时地震动对莫高窟的影响。研究表明逆断层使三危山断层辐射的地震动分布形态呈现出明显的上下盘效应。同时，将计算PGA值与已有的根据其它地区地震记录推出的PGA衰减关系进行了对比分析，认为该结果可供莫高窟抗震防护加固设计时参考。
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| 关 键 词： | 莫高窟 三危山断层 近场地震动 随机有限断层法 |
| 文章编号： | 1000-0844(2004)03-0260-06 |
| 收稿时间： | 2004/5/20 0:00:00 |
| 修稿时间： | 2004年5月20日 |
INFLUENCE OF NEAR-FIELD GROUND MOTIONS OF SANWEI MT. FAULT ON MOGAO GROTTOES IN DUNHUANG |
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| LU Yu-xia and SHI Yu-cheng.INFLUENCE OF NEAR-FIELD GROUND MOTIONS OF SANWEI MT. FAULT ON MOGAO GROTTOES IN DUNHUANG[J].Northwestern Seismological Journal,2004,26(3):260-264. |
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| Authors: | LU Yu-xia and SHI Yu-cheng |
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| Institution: | Lanzhou Base of Institute of Earthquake Prediction, CEA, Gansu Lanzhou 730000, China;Lanzhou Institute of Seismology, CEA, Gansu Lanzhou 730000, China and Lanzhou Base of Institute of Earthquake Prediction, CEA, Gansu Lanzhou 730000, China;Lanzhou Institute of Seismology, CEA, Gansu Lanzhou 730000, China |
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| Abstract: | Sanwei Mt. active fault is only 3 km from Mogao Grottoes in Dunhuang city, Gansu province. In this paper, based on the horizontal layered & homogeneous seismogenic fault model, the influence of ground motions generated from Sanwei Mt. fault on Mogao Grottoes under scenario earthquakes respectively with magnitude of (5.5,) 6.0 and 6.5 is simulated using the stochastic finite-fault method. It indicates that the distribution of ground motions near Sanwei Mt. fault presents the hanging wall effect of reverse fault. The calculated values of PGA are compared with those deduced from other attenuation formulas based on the data of other areas to validate the calculation result. This study has some reference to aseismatic and reinforced design in Mogao grottoes. |
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| Keywords: | Mogao grottoes Sanwei Mt fault Near-fault ground motion Stochastic finite-fault method |
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