ZHU Guangbin, LI Jiancheng, WEN Hanjiang, WANG Zhengtao. Investigation on the Mass Variations of Ice Sheet in Antarctic with GRACE Time-variable Gravity Models[J]. Geomatics and Information Science of Wuhan University, 2009, 34(10): 1185-1189.
Citation: ZHU Guangbin, LI Jiancheng, WEN Hanjiang, WANG Zhengtao. Investigation on the Mass Variations of Ice Sheet in Antarctic with GRACE Time-variable Gravity Models[J]. Geomatics and Information Science of Wuhan University, 2009, 34(10): 1185-1189.

Investigation on the Mass Variations of Ice Sheet in Antarctic with GRACE Time-variable Gravity Models

Funds: 国家自然科学基金资助项目(40637034,40874012,40704004);武汉大学地球空间环境与大地测量教育部重点实验室开放研究基金资助项目(07-05)
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  • Received Date: August 09, 2009
  • Revised Date: August 09, 2009
  • Published Date: October 04, 2009
  • In this paper,Empirical Orthogonal Functions(EOF) is used to analyze the time series of GRACE J2 inferred from CNES/GRGS and UTCSR to see the characteristics and the differences.The results show that the seasonal variation of J2 time series from CNES/GRGS is clearer than that from UTCSR.With CNES/GRGS GRACE Level-2 products,the mass rates of ice sheet in Antarctic are then computed.And,the mass variations in West Antarctic and East Antarctic are analyzed using EOF,whose annual amplitudes are also derived.The analysis indicates that the mass variations of ice sheet in Antarctic show regional seasonal change,the mass of ice sheet in West Antarctic is decreasing clearly.The annual amplitudes after EOF reconstruction and harmonic analysis in West Antarctic and East Antarctic are 2.4 cm and 1.3 cm respectively.
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