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利用南天山地区2010~2013年间的10期流动重力观测资料,以相邻两期流动重力值作为单元,计算出监测区重力场变化量,分析了该地区重力场时空变化特征,探讨了地震孕育和发生与重力场变化的关系。结果表明:区域重力场总的变化趋势具有以巴楚、麦盖提为界西边重力场增强,东边重力场减弱的特征,区域内重力变化极值区多出现在南天山与西昆仑交汇区,重力场变化梯度也较大,塔里木盆地重力场变化梯度较小,比较稳定。
Based on the 10 mobile gravity observations from 2010 to 2013 in the southern Tianshan Mountains, the gravity field of the two adjacent areas was used as a unit to calculate the variation of the gravitational field in the monitoring area. The temporal and spatial variation characteristics of the gravitational field in this area were analyzed. And the occurrence of changes in the relationship with the gravity field. The results show that the general trend of regional gravitational field has the characteristics that the gravitational field in the west of Bachu and Mageweti is enhanced and the gravitational field in the east is weakened. The extreme value of gravity change in the region appears mostly in the intersection of the South Tianshan and the West Kunlun Mountains, Gradient gradient changes are also larger, the Gravity field gradient changes in the Tarim Basin is relatively small, more stable.