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介绍了2013年12月1日新疆柯坪MS5.3地震基本参数、震源机制解、地震序列特征,分析了震前、震中及相邻构造区地震活动特征以及200 km范围内定点前兆异常特征。研究结果表明:(1)本次地震发生在柯坪断裂,震源断错类型为兼左旋走滑分量的逆断类型;(2)该地震序列为主余型,余震衰减快且呈北东向展布;(3)震前地震活动性异常有2~4级地震嵌套平静、柯坪块体4级地震平静、3级地震条带、普昌断裂中等地震异常增强区和地震学参数;(4)定点前兆观测资料主要异常特征以突变为主。除哈拉峻钻孔倾斜外,其他定点前兆观测异常在空间分布上呈现出由近及远、向震中外围迁移的现象。
The basic parameters, focal mechanism solutions and seismic sequence features of the Keping MS5.3 earthquake on December 1, 2013 in Xinjiang were introduced. The seismic activity characteristics before, during and after the earthquake and the precursory anomalies of the fixed point within 200 km were analyzed. The results show that: (1) The earthquake occurred in the Keping fault and the source fault type was the reverse type of left-lateral strike-slip component; (2) The sequence of the earthquake was the main type and the aftershock attenuated rapidly and appeared northeastward (3) Before the earthquake, the anomalous earthquakes were nested and quake level 2 to 4, Quaternary Quelian earthquake quake, level 3 seismic zone and moderately anomalous area of the Ordovician fault anomalous and seismological parameters. (4) The major anomalies in the observed data of fixed-point precursors are mainly mutation. In addition to the borehole tilt of Harajun, other anomalies observed at fixed-point precursors show a spatial-temporal shift from near-to-far and to epicenter.