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利用新疆地区南疆测网2015~2016年阿克陶地震发生前后共5期流动重力资料,以点线面的形式分别分析震中附近测点重力值时序变化、测线段差变化以及测区重力场变化特征。震前的重力观测结果表明,震中附近的乌恰至布伦口地区从2015年开始出现重力值逐步上升趋势,地震发生前半年该区域重力变化转变为下降趋势,并震前一段时间出现重力变化高梯度带。震后的重力观测结果显示,以布伦口为界,南北两侧的重力段差出现反向变化趋势,震中附近地区震前震后出现的重力场变化特征与该地区地质构造分布有较好的对应性。
By using the gravity data collected before and after the Aketao Earthquake in 2015 and 2016 in Xinjiang region, the gravimetric data of the measuring points near the epicenter are analyzed in the form of point and line surface. Change characteristics. The gravity observations before the earthquake show that the gravitation value of Wuqia-Burenkou near the epicenter gradually increased from 2015, and the gravity change in this area changed into a downward trend in the first half of the earthquake, and the gravity change occurred some time before the earthquake High gradient band. The gravitational observation after the earthquake showed that the Baryn port bounds the reverse trend of gravity difference between the two sides of the south and north, and that the gravitational field appeared in the vicinity of the epicenter has a good correspondence with the geologic structure distribution in this area Sex.