Abstract:Based on the grid value of the coefficient term of relative gravimeter resolved from long baseline and absolute point calibration, we calculate mobile gravity data from 2014 to 2016 in south-central Shanxi province network using the classical adjustment method. Then we get the images of gravity field change in 0.5 a scale. It turns out that the evolution of gravitational field occurs in three stages, which are the regional negative gravity anomaly,the local gravity anomaly and the earthquake occurrence, in the study region before the Yuncheng earthquake.
FENG Jianlin,TAN Yujuan,QIN Jianzeng et al. Gravity Changes before the Yuncheng MS4.4 Earthquake in South-Central Shanxi[J]. jgg, 2017, 37(4): 407-410.