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利用2014—2015年南天山地区45个测点的2期流动地磁资料,分析喀什及邻近区域相邻两期岩石圈磁场的动态变化特征,同时,利用2014—2016年170个测点的4期流动重力资料,分析不同时间尺度的重力场动态变化信息。研究表明:皮山6.5级地震的发生对皮山一带的地磁矢量分布特征影响较大,总磁场强度、磁偏角和磁倾角均有变化;无论是半年尺度还是一年尺度的重力变化图像都显示乌恰一直处于重力变化的高梯度带;综合多手段的观测资料对震情形势的判定更为准确。
The dynamic characteristics of lithospheric magnetic field in two adjacent Kashgar and adjacent areas are analyzed by using the second-phase flow geomagnetic data of 45 measuring points in South Tianshan from 2014 to 2015. At the same time, Flow gravity data, analysis of dynamic changes of gravity field at different time scales. The results show that the occurrence of the M6.5 Pishan earthquake has a great influence on the geomagnetic vector distribution in the Pishan area, and the total magnetic field strength, magnetic declination and magnetic dip angle all change. Both the gravitational change images at the six-year scale and the one-year scale It shows that Wuqia has been in a high-gradient zone of gravity change. The comprehensive and multi-means observation data more accurately judge the earthquake situation.