| Response of vertical deformation on faults to remote strong earthquakes |
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| 作者姓名： | 荆燕 张世中 李宏 熊玉珍 刘凤秋 孙启伟 董建业 张鸿旭 陈葛天 |
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| 作者单位： | Institute of Crustal Dynamics China Earthquake Administration，Institute of Crustal Dynamics，China Earthquake Administration，Institute of Crustal Dynamics，China Earthquake Administration，Institute of Crustal Dynamics，China Earthquake Administration，Institute of Crustal Dynamics，China Earthquake Administration，Institute of Crustal Dynamics，China Earthquake Administration，Institute of Crustal Dynamics，China Earthquake Administration，Institute of Crustal Dynamics，China Earthquake Administration，Institute of Crustal Dynamics，China Earthquake Administration，Beijing 100085，China School of the Earth Sciences and Resources，China University of Geosciences Beijing 100083，China，Beijing 100085，China，Beijing 100085，China，Beijing 100085，China，Beijing 100085，China，Beijing 100085，China，Beijing 100085，China，Beijing 100085，China，Beijing 100085，China |
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| 基金项目： | JointSeismologicalScienceFoundationofChina(605021) |
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| 摘 要： | Vertical coseismic deformation on non-causative fault caused by remote strong earthquakes(epicentral distance≥1500 km,MS≥7.0)are observed by fault-monitoring instruments of new type during recent two years.The monitor-ing result shows,delay time,maximum amplitude and duration of vertical deformation on the non-causative faulthave remarkable close relationship with earthquakes magnitude and epicentral distance.The delay time of verticalcoseismic deformation have positive linear relationship with epicentral distance.The velocity of coseismic defor-mation is 5.5 km/s,close to the velocity of surface wave in granite.The logarithms of maximum amplitude of co-seismic deformation and epicentral distance have remarkable linear relationship with magnitude.The greater themagnitude and the closer the epicentral distance are,the bigger the maximum amplitude of coseismic deformationon non-causative fault will be.Relative to the epicentral distance,the magnitude is the most important factor to theduration of coseismic vertical deformation on the non-causative fault.Stronger earthquake causes longer vibrationduration of coseismic deformation.The experiential equation of co-seismic deformation faults obtained by thiswork is significant on the coseismic deformation research.
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| 关 键 词： | 断层 垂直变形 远方强震 等震波圈响应 地震 |
| 文章编号： | 1000-9116（2007）02-0172-08 |
| 收稿时间： | 2006-07-21 |
| 修稿时间： | 2006-11-14 |
Response of vertical deformation on faults to remote strong earthquakes |
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| Jing Yan , Zhang Shi-zhong , Li Hong , Xiong Yü-zhen , Liu Feng-qiu , Sun Qi-wei , Dong Jian-ye , Zhang Hong-xu and Chen Ge-tian.Response of vertical deformation on faults to remote strong earthquakes[J].Acta Seismologica Sinica(English Edition),2007,20(2):172-179. |
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| Authors: | Jing Yan Zhang Shi-zhong Li Hong Xiong Yü-zhen Liu Feng-qiu Sun Qi-wei Dong Jian-ye Zhang Hong-xu and Chen Ge-tian |
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| Institution: | (1) Institute of Crustal Dynamics, China Earthquake Administration, Beijing, 100085, China;(2) School of the Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, China |
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| Abstract: | Vertical coseismic deformation on non-causative fault caused by remote strong earthquakes (epicentral distance ≥1 500 km,
M
S≥7.0) are observed by fault-monitoring instruments of new type during recent two years. The monitoring result shows, delay
time, maximum amplitude and duration of vertical deformation on the non-causative fault have remarkable close relationship
with earthquakes magnitude and epicentral distance. The delay time of vertical coseismic deformation have positive linear
relationship with epicentral distance. The velocity of coseismic deformation is 5.5 km/s, close to the velocity of surface
wave in granite. The logarithms of maximum amplitude of coseismic deformation and epicentral distance have remarkable linear
relationship with magnitude. The greater the magnitude and the closer the epicentral distance are, the bigger the maximum
amplitude of coseismic deformation on non-causative fault will be. Relative to the epicentral distance, the magnitude is the
most important factor to the duration of coseismic vertical deformation on the non-causative fault. Stronger earthquake causes
longer vibration duration of coseismic deformation. The experiential equation of co-seismic deformation faults obtained by
this work is significant on the coseismic deformation research.
Foundation item: Joint Seismological Science Foundation of China (605021) |
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| Keywords: | vertical fault deformation remote strong earthquakes coseismic response |
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