极地研究

极地研究 ›› 2009, Vol. 21 ›› Issue (1): 43-47.

• 研究论文 • 上一篇    下一篇

基于GRACE反演南极物质平衡的研究

翟宁, 王泽民, 鄂栋臣   

  1. 武汉大学测绘学院中国南极测绘研究中心; 极地测绘科学国家测绘局重点实验室; 珠海市海洋与渔业环境监测中心;
  • 出版日期:2009-03-30 发布日期:2009-03-30

INVESTIGATION ON ANTARCTIC MASS BALANCE WITH GRACE

DI Ning, WANG Ze-Min, E Dong-Chen   

  1. 1Chinese Antarctic Center of Surveying and Mapping; SGG; Wuhan University; Wuhan 430079; China; 2Key Laboratory of Polar Surveying and Mapping; SBSM; 3Zhuhai Ocean and Fishery Environment Monitoring Center; Zhuhai 519000; China
  • Online:2009-03-30 Published:2009-03-30

PDF (PC)

1957

被引次数

22

摘要：

利用GRACE重力卫星提供的时变重力场反演了南极大陆冰雪质量变化。由于GRACE提供的C20项不准确,本文考虑利用SLR测得的C20项替换,反演结果显示南极西部冰雪在消融,东部基本保持平衡,整个南极以(-0.689±0.172)cm/a的速率在消融。

关键词: GRACE, 时变重力场, 南极, GRACE, 时变重力场, 南极

Abstract:

Using measurements of time-variable gravity field from the Gravity Recovery and Climate Experiment(GRACE)satellite,mass variations of the Antarctic ice and snow are estimated. Because C20 of GRACE is not accurate enough,C20 harmonic from Satellite Laser Ranging(SLR) is adopted instead. The results show that mass loses in West Antarctica,and mass is in balance in East Antarctica. And the rate of Antarctic mass loss is-0.689±0.172cm/a.

Key words: GRACE, time variable gravity field, Antarctica