陆态网络基准站的重力水平梯度分析  

Analysis of Horizontal Gradient of Gravity Changes in the CMONOC

作　　者：陈钊[1,2] 李辉[2] 孙少安[2] 邢乐林[2] 

机构地区：[1]国家测绘地理信息局大地测量数据处理中心,西安市710054 [2]中国地震局地震研究所(地震大地测量重点实验室),武汉市430071

出　　处：《大地测量与地球动力学》2016年第1期75-78,共4页Journal of Geodesy and Geodynamics

基　　金：中国地震局基本科研业务费(201508006);国家自然科学基金(41204019);中国地震局地震行业科研专项(201308004)~~

摘　　要：以中国大陆构造环境监测网络2010~2011年实测重力水平梯度数据为基础,通过正演计算3种典型地形的水平梯度,与实测结果进行对比分析。结果表明,半数以上测点存在较大的水平梯度,由此产生的干扰会极大地降低观测结果的精度与可靠性。因此,有条件的测点应进行水平梯度观测并进行校正。Based on actual measurement of gravity horizontal gradient data from the crustal movement observation network of China （CMONOC） in 2010 and 2011, and by means of a forward modeling tri- al, the research analyzes the influences of three typical geographies on horizontal gradient. The com- parison of actual measurements and trial results show that half of the measuring points have high hori- zontal gradient values and that the resulting interference is too great to ignore. Otherwise, it will greatly reduce the accuracy and reliability of the observations. Therefore, the research supports that we pay attention to the influences of horizontal gradient on gravity measurement. Furthermore, we should take effective measures to weakenthese influences, through conditional electionof some points for horizontal gradient observation and correction.

关 键 词：重力 重力水平梯度 正演 陆态网络 

分 类 号：P223[天文地球—大地测量学与测量工程]