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《地震学报(英文版)》 2002-01
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Earthquake precursors detected by astronomical observations

ZHANG Guo-dong ( HAN Yan-ben ( ZHAO Fu-yuan National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China  
It has been primarily confirmed that before the occurrence of a middle or major earthquake, anomalies in the residuals of universal time and latitude measurements obtained by astrometric observations may appear. We investigate the relation between the residual anomalies and the three key factors of an earthquake. To build a network of observational sites so as to obtain data of residuals of universal time and latitude from multi-instruments would be of certain significance for determining three key factors of an earthquake, especially for positioning epicenter. The data from multi-instruments would also be valuable for studies of the variation of the vertical. It is proposed to manufacture potable and high-accuracy astrometric instruments and to build observational network to obtain anomalies of universal time and latitude in the regions with high earthquake uprising possibilities.
【Fund】: State Natural Science Foundation of China (19973011).
【CateGory Index】: P315.72
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