| Analysis on the Characteristics of the Kalpin MS5.3 Earthquake Sequence of December 1, 2013 and Anomalies before the Earthquake |
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| 作者姓名： | Liu Jianming Wang Qiong Nie Xiaohong Gao Ge Zhang Linlin Zhang Zhiguang Xiang Yang |
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| 作者单位： | Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China |
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| 摘 要： | This paper introduces the basic parameters, focal mechanism solutions and earthquake sequence characteristics of the Kalpin MS5.3 earthquake sequence of December 1, 2013, and analyzed seismic activity before the earthquake, the adjacent tectonic features and the precursory anomaly at fixed points within a range of 200km. Research indicates:(1) The earthquake occurred on Kalpin fault, the source rupture type is thrust faulting with sinistral strike-slip component. (2) The earthquake sequence is mainshock-aftershock type, with the aftershock distribution attenuating quickly and trending NE. (3) Abnormal seismic activity before the earthquake was characterized by seismically nesting quiescence of MS2.0-4.0 earthquakes, seismic quiescence of MS4.0 earthquakes and seismic belts of MS3.0 earthquakes in the Kalpin block, abnormal enhancement zone of moderate earthquakes on Puchang fault and seismological parameters. (4) Anomalies of precursory observation data at fixed stations are mainly characterized by mutation. Apart from the borehole tiltmeter in Halajun, the spatial distribution of other abnormal precursors showed a phenomenon of migration from the near field to far field and from the epicenter to the peripheries.
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| 关 键 词： | The Kalpin earthquake with MS5.3 Sequence features Seismic activity characteristics Fixed-point precursor observation anomaly |
| 收稿时间： | 2014/11/3 0:00:00 |
| 修稿时间： | 2015/3/25 0:00:00 |
Analysis on the Characteristics of the Kalpin MS5.3 Earthquake Sequence of December 1, 2013 and Anomalies before the Earthquake |
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| Liu Jianming,Wang Qiong,Nie Xiaohong,Gao Ge,Zhang Linlin,Zhang Zhiguang,Xiang Yang.Analysis on the Characteristics of the Kalpin MS5.3 Earthquake Sequence of December 1, 2013 and Anomalies before the Earthquake[J].Earthquake Research in China,2017,31(3):381-394. |
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| Authors: | Liu Jianming Wang Qiong Nie Xiaohong Gao Ge Zhang Linlin Zhang Zhiguang and Xiang Yang |
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| Institution: | Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China and Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China |
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| Abstract: | This paper introduces the basic parameters, focal mechanism solutions and earthquake sequence characteristics of the Kalpin MS5.3 earthquake sequence of December 1, 2013, and analyzed seismic activity before the earthquake, the adjacent tectonic features and the precursory anomaly at fixed points within a range of 200km. Research indicates:(1) The earthquake occurred on Kalpin fault, the source rupture type is thrust faulting with sinistral strike-slip component. (2) The earthquake sequence is mainshock-aftershock type, with the aftershock distribution attenuating quickly and trending NE. (3) Abnormal seismic activity before the earthquake was characterized by seismically nesting quiescence of MS2.0-4.0 earthquakes, seismic quiescence of MS4.0 earthquakes and seismic belts of MS3.0 earthquakes in the Kalpin block, abnormal enhancement zone of moderate earthquakes on Puchang fault and seismological parameters. (4) Anomalies of precursory observation data at fixed stations are mainly characterized by mutation. Apart from the borehole tiltmeter in Halajun, the spatial distribution of other abnormal precursors showed a phenomenon of migration from the near field to far field and from the epicenter to the peripheries. |
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| Keywords: | The Kalpin earthquake with MS5 3 Sequence features Seismic activity characteristics Fixed-point precursor observation anomaly |
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