新疆南天山地区重力场动态变化特征研究  

STUDY ON DYNAMIC EVOLUTION FEATURES OF GRAVITY FIELD IN SOUTHERN TIANSHAN AREA,XINJIANG

作　　者：艾力夏提.玉山 刘代芹[1] 李杰[1] 王晓强[1] 方伟[1] 朱治国[1] 帕尔哈提.再努拉 李瑞[1] 

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《内陆地震》2014年第2期176-181,共6页Inland Earthquake

基　　金：新疆维吾尔自治区自然科学基金(2012211B56)资助

摘　　要：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。The difference between two adjacent period of mobite gravity value are calculated using mobile gravity measurement data of last 10 times from 2010 to 2013 in Southern Tianshan area, the spatial and temporal dynamic characteristics of gravity field in this area are studied, and the relation- ship between gravity field variation and seismic activity are discussed. The result shows that the gravity field variation trend presents the characteristics of enhancement in the west and decrease in the east by the boundary of Bachu and Maigaiti area. Extreme value areas of gravity variation appeared mostly in the intersection area of Southern Tianshan and Western Kunlun, and gravity field variation gradient is larger than other area. The gravity field variation gradient is smaller and more stable in the Tarim basin.

关 键 词：南天山 重力场 流动重力 地震活动 

分 类 号：P315.7[天文地球—地震学]