Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12951
Title: Detection of the special gravity signals in sub-tidal band by using wavelet technique
Authors: Sun, H
Zheng, D
Ding, X 
Chen, W 
Chen, X
Keywords: Earth's solid inner core
Gravity signals in sub-tidal band
Slichter modes
Wavelet time-frequency spectrum
Issue Date: 2006
Publisher: Chinese Academy of Sciences
Source: Chinese science bulletin (科學通報. 英文版), 2006, v. 51, no. 6, p. 713-722 How to cite?
Journal: Chinese science bulletin (科學通報. 英文版) 
Abstract: Based on the 5-year length of tidal gravity observations recorded with a superconducting gravimeter at Wuhan International Tidal Gravity Reference Station, the special gravity signals associated with the possible Earth's solid inner core translational oscillations in sub-tidal bands are detected and studied by using for the first time a wavelet transformation technique. The analysis is conducted on gravity residuals after removing the synthetic tidal gravity signals and air pressure perturbation from original observations, demonstrating that there exist gravity oscillation signals at 4-6 h bands with amplitude of nGal level. However, it is found that the frequency and amplitude of such kind of oscillation signals change with time, and the analysis shows that these oscillation signals are provoked probably by some non-continuous source with very low amplitude.
URI: http://hdl.handle.net/10397/12951
ISSN: 1001-6538
EISSN: 1861-9541
DOI: 10.1007/s11434-006-0713-4
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