PLUMB LINE DEFLECTION VARIED WITH TIME OBTAINED BY REPEATED GRAVIMETRY
Li Hui
Fu Guangyu
Li Zhengxin
Abstract：In this paper, the plumb line deflection varied with time (PLV) are calculated with the Vening-Meinesz formula for Xiaguan and Beijing point based on the 28th and 39th campaigns of gravimetry at the local gravity networks in the Western Yunnan Earthquake Prediction Experiment Area and the North China. Based on the results, we conclude that: ① the maximum of PLV is under 0.1″ and amplitudes of interannual variation are under 0.02″. ② PLV can be determined with the reliability of 0.01″. This means that repeated gravimetry could be used to determine the PLV. ③ There are some common and different characteristics on the different places and different component. It will provide a new approach in the local or global geodynamic study by using repeated gravimetry.
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Publication Date：2001-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 61-67 )