基于海水质量亏损引起的重力异常反演南海海底地形  

INVERSION OF SUBMARINE TOPOGRAPHY OF SOUTH CHINA SEA BY USING GRAVITY ANOMALY CAUSED BY MASS DEFICIENCY

作　　者：聂琳娟[1,2] 吴云孙[1] 金涛勇[1] 超能芳[1] 

机构地区：[1]武汉大学测绘学院,武汉430079 [2]湖北水利水电职业技术学院,武汉430070

出　　处：《大地测量与地球动力学》2012年第1期43-46,共4页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41074014);湖北省高等学校青年教师深入企业行动计划(XD2010461)

摘　　要：基于分析得到的海水质量亏损引起的重力异常与海深之间的线性关系,利用由卫星测高资料计算得到的空间重力异常格网值,联合EGM96重力场模型和ETOPO2海深模型,反演得到南海海底地形,反演结果分别与船测海深数据和ETOPO2海深模型进行比较,其精度和分辨率较ETOPO2海深模型均有明显提高。On the basis of the proposed approximate linear relation between the square of ocean depth and the gravity anomaly caused by the mass deficiency of the ocean water, the submarine topography of South China Sea was inversed by using the gridded gravity anomaly values from satellite altimetry data, and combing earth gravity field model EGM96 and ocean depth model ETOPE2. The inversion results are compared with the ship data and ETOPO2 model, it is shown that the accuracy and resolution are significantly improved as compared to the ETOPO2 model.

关 键 词：卫星测高 质量亏损 重力异常 海深模型 海底地形 

分 类 号：P737[天文地球—海洋地质]