| The NE Directed Seismicity Belt in Tibet after the MS8.1 Nepal Earthquake and Its Predictive Significance |
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| 作者姓名： | Wang Shuangxu Zhu Liangyu Xu Jing Ji Lingyun Jiang Fengyun |
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| 作者单位： | The Second Monitoring and Application Center, China Earthquake Administration, Xi''an 710054, China,The Second Monitoring and Application Center, China Earthquake Administration, Xi''an 710054, China,The Second Monitoring and Application Center, China Earthquake Administration, Xi''an 710054, China,The Second Monitoring and Application Center, China Earthquake Administration, Xi''an 710054, China,The Second Monitoring and Application Center, China Earthquake Administration, Xi''an 710054, China |
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| 基金项目： | This paper is funded by China Comprehensive Geophysical Field Observation in North China of Earthquake Scientific Research (201508009). |
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| 摘 要： | After the 2015 MS8.1 Nepal earthquake, a strong and moderate seismicity belt has formed in Tibet gradually spreading along the northeast direction. In this paper, we attempt to summarize the features and investigate the primary mechanism of this behavior of seismic activity, using a 2-D finite element numerical model with tectonic dynamic settings and GPS horizontal displacements as the constraints. In addition, compared with the NE-trending seismicity belt triggered by the 1996 Xiatongmoin earthquake, we discuss the future earthquake hazard in and around Tibet. Our results show that:the NE-directed seismicity belt is the response of enhanced loading on the anisotropic Qinghai-Tibetan plateau from the Indian plate and earthquake thrusting. Also, this possibly implies that a forthcoming strong earthquake may fill in the gaps in the NE-directed seismicity belt or enhance the seismic hazard in the eastern (the north-south seismic zone) and western (Tianshan tectonic region) parts near the NE-directed belt.
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| 关 键 词： | The 2015 MS8.1 Nepal earthquake Qinghai-Tibetan plateau NE-directed seismicity belt predictive significance |
| 收稿时间： | 2017/1/5 0:00:00 |
| 修稿时间： | 2017/3/27 0:00:00 |
The NE Directed Seismicity Belt in Tibet after the MS8.1 Nepal Earthquake and Its Predictive Significance |
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| Wang Shuangxu,Zhu Liangyu,Xu Jing,Ji Lingyun,Jiang Fengyun.The NE Directed Seismicity Belt in Tibet after the MS8.1 Nepal Earthquake and Its Predictive Significance[J].Earthquake Research in China,2018,32(1):119-129. |
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| Authors: | Wang Shuangxu Zhu Liangyu Xu Jing Ji Lingyun and Jiang Fengyun |
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| Abstract: | After the 2015 M_S8. 1 Nepal earthquake,a strong and moderate seismicity belt has formed in Tibet gradually spreading along the northeast direction. In this paper,we attempt to summarize the features and investigate the primary mechanism of this behavior of seismic activity,using a 2-D finite element numerical model with tectonic dynamic settings and GPS horizontal displacements as the constraints. In addition,compared with the NEtrending seismicity belt triggered by the 1996 Xiatongmoin earthquake,we discuss the future earthquake hazard in and around Tibet. Our results show that: the NE-directed seismicity belt is the response of enhanced loading on the anisotropic Qinghai-Tibetan plateau from the Indian plate and earthquake thrusting. Also,this possibly implies that a forthcoming strong earthquake may fill in the gaps in the NE-directed seismicity belt or enhance the seismic hazard in the eastern( the north-south seismic zone) and western( Tianshan tectonic region) parts near the NE-directed belt. |
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| Keywords: | The 2015 MS8 1 Nepal earthquake Qinghai-Tibetan plateau NE-directed seismicity belt predictive significance |
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