利用GOCE轨道数据反演南极冰盖质量变化  

MASS CHANGE IN ANTARCTIC AERA BASED ON GOCE ORBITS DATA

作　　者：黄强[1] 范东明[1] 王莉君 

机构地区：[1]西南交通大学地球科学与环境工程学院,成都610031 [2]成都邛崃市规划管理局,邛崃611530

出　　处：《大地测量与地球动力学》2013年第5期67-70,共4页Journal of Geodesy and Geodynamics

基　　金：中央高校基本科研业务费专项资金(SWJTU12BR012)

摘　　要：基于短弧长积分法利用近一年的GOCE轨道数据恢复了10个60阶次的重力场模型,分析了GOCE球谐位系数残差存在的相关性,并利用恢复的重力场模型序列反演了南极30°范围内的质量变化。结果显示,GOCE卫星探测到的南极B点(-75°,250°)的质量变化约为-9.15 cm/a,B点处冰盖呈现融化趋势。Ten gravity field models up to 60 degree and order are recovered based on one year GOCE orbits data and short arc integral approach. The correlated error among spherical harmonic coefficients is studied. And the mass change within the range of Antarctic 30° is inverted using the recovery gravity field model sequences. The results show that the mass change at B point （-75°, 250°） is approximate -9.15 cm/a which is detected by GOCE satellite, it means that the ice sheet of B point is melting.

关 键 词：GOCE 精密科学轨道 南极冰盖质量变化 高斯滤波 去相关误差滤波 

分 类 号：P312.4[天文地球—固体地球物理学]