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Research on the relationship between Earth’s variable rotation and global seismic activity
Authors:Da-Wei Zheng  Yong-Hong Zhou
Institution:1. Shanghai Observatory, Chinese Academy of Sciences, 200030, Shanghai, China
Abstract:Based on the time series of observational variations of the length of day (LOD) and seismic data in the world, the relations of the decadal fluctuation and seasonal variation in the Earth’s rotation with global seismic activity are studied in this paper. The results suggest that there are overall correlations on temporal scale and regional discrepancy on spatial scale between global seismic activity and the Earth’s variable rotation, especially the seismic activity in the Eurasian seismic zone (not including southeast Asia) and the Lower California-Eastern Alaska seismic zone correlating well with the Earth’s variable rotation. According to the relations mentioned above, the observational data of the Earth’s rotation might provide a referential basis for monitoring global seismic activity.
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