THINKING ON DATUM OF REGIONAL GRAVITY FIELD VARIATION
Sun Shaoan 1,2) ; Kang Kaixuan 1,2) ; and Huang Bangwu 3)
1)Institute of Seismology，CEA，Wuhan 430071;2)Crustal Movement Laboratory，Wuhan 430071;3)Geophysical Exploration Center,CEA,Zhengzhou 450002
Abstract A spacetime datum which is a reference frame plays an important role in the study of regional gravity field variations. Because gravity values related with different spacetime datum will be different, whether the datum is reasonable or not,it has a crucial influence on the measured results of gravity variation. We study the characters of spacetime datum, estimate the advantages and disadvantages of applicability for the spacetime datum. We also give the standard for rational spacetime datum of regional gravity field, which could play a key role in valuing the results of gravity variation. The obtained results will effectively improve the quality of our previous results on gravity variation and lessen the difference between calculated modeling and real situation.
Key words ：
spacetime datum
regional gravity net
regional gravity field
reference system
gravity variation
Received: 01 January 1900
Corresponding Authors:
Sun Shaoan
Cite this article:
Sun Shaoan,Kang Kaixuan, and Huang Bangwu . THINKING ON DATUM OF REGIONAL GRAVITY FIELD VARIATION[J]. , 2012, 32(1): 17-20.
Sun Shaoan,Kang Kaixuan, and Huang Bangwu . THINKING ON DATUM OF REGIONAL GRAVITY FIELD VARIATION[J]. jgg, 2012, 32(1): 17-20.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2012/V32/I1/17
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