ANALYSIS OF REPEAT ABSOLUTE GRAVIMETRIC RESULTSAT CHENGDU SEISMOSTATION
Xing Lelin 1,2,3) ;Li Hui 1,2) ; He Zhitang 4) ; Dong Zhengyao 1,2) ; and Tan Hongbo 1,2)
1)Institute of Seismology, CEA ,Wuhan 430071 2)Crustal Movement Laboratory, Wuhan 4300713)School of Geodesy and Geomatics, Wuhan University, Wuhan 4300794)Shanxi Bureau of Surveying and Mapping, Xi’an 710054
Abstract The repeat absolute gravity observation had been done five times at Chengdu station by FG5/214 and FG5/232 absolute gravimeter from April,2007 to June,2008, and every standard deviation is less than ±2×10 -8 ms -2
.The results show that the environmental noise of Chengdu station is very little and the geologic condition is stable; and by the processing and analyzing of the observed data, it shows that the gravity values in December,2007 increased 5×10 -8 ms -2 than that in April,2007, after the Wenchuan Ms8.0 earthquake happened, the trend of whole gravity change has dropped and some times risen with some ascendant but still has not come back to the former normal value.
Key words ：
absolute gravimetry
gravity change
FG5 absolute gravimeter
earthquake
Chengdu seismostation
Received: 01 January 1900
Corresponding Authors:
Xing Lelin
Cite this article:
Xing Lelin,Li Hui,He Zhitang et al. ANALYSIS OF REPEAT ABSOLUTE GRAVIMETRIC RESULTSAT CHENGDU SEISMOSTATION[J]. , 2008, 28(6): 38-42.
Xing Lelin,Li Hui,He Zhitang et al. ANALYSIS OF REPEAT ABSOLUTE GRAVIMETRIC RESULTSAT CHENGDU SEISMOSTATION[J]. jgg, 2008, 28(6): 38-42.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2008/V28/I6/38
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