- 责任者：Xie Chaodi (Geophysics Department ; Yunnan University ; Kunming 650091 ; China) ; Wu Xiaoping
- 刊名：Chinese Journal of Geophysics
- 出版年：2013
- 卷期：56(10)
- 关键词：潮汐 ; tides ; 地震 ; earthquakes
- 页码：p.3425-3433
- 图表：7 illus., 42 refs.
- 分类号：0500
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
Using USGS global catalog of M≥5.0 seismicity between 1850 and 2012, a group of time series of global seismic energy release are obtained. The wavelet transform is applied to these time series in order to analyze the quasi-periodic characteristics. The results show that the time series of global seismic energy release contain three quasi-periodic components of 9-year, 19- year and 45-year. It is worth noting that the 45-year quasi-periodic component is most obvious. Combined with the physical background of the tidal force period, the correlations between long- periodic astronomical tidal forces and quasi cycles of seismic energy release are discussed. Quasi- periodic component related to the short-periodic astronomical tide is not found in the global seismic energy release.