【摘要】 对北天山地区2016年12月8日呼图壁M_S6.2地震周边300 km范围内跨断层精密水准资料进行分析,运用二倍均方差对异常进行判定,计算出2012～2016年断层的趋势累积率Dc,认为地震前存在着一定范围的应力积累、加速运动、尖点突跳等中短期前兆异常,地震发生在形变异常显著及断层形变趋势累积率高值区域。更多还原

【Abstract】 Based on analysis of the precise leveling data across faults within 300 km around Hutubi M_S6.2 earthquake on December 8 th, 2016 in the Northern Tianshan area, the double mean square deviation is used to judge the anomalies, and the trend accumulation rate D_C of faults in 2012～2016 is calculated. It is considered that there are some short and medium-term precursory anomalies such as stress accumulation, acceleration movement and sharp point jump before the earthquake. The earthquake occurred in the area with significant deformation anomaly and high accumulation rate of fault deformation trend.更多还原