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利用2005—2009年流动重力观测资料,分析新疆南天山地区重力场动态变化特征,并给出一年尺度的重力场变化图像,结合重力段差时序图以及GPS计算资料分析2008年10月5日乌恰西6.8级地震与重力场、应变场的关系,并综合分析区域重力场与动力构造环境的响应关系。结果表明:重力场变化与区域应力-应变场微动态活动有关,重力场变化反映出应力场引起的重力源兆变化特征。
Based on the data of mobile gravity observations from 2005 to 2009, the dynamic characteristics of the gravitational field in the southern Tianshan Mountains of Xinjiang were analyzed and a one-year gravitational field variation image was presented. Based on the gravity sequence difference chart and GPS data, The relationship between the Macy 6.8 earthquake and the gravitational field and the strain field, and comprehensively analyzes the response relationship between the regional gravitational field and the dynamic tectonic setting. The results show that the change of gravity field is related to the micro-dynamic activity of regional stress-strain field, and the change of gravity field reflects the change of gravity source due to stress field.