Abstract Based on the gravity observation data with high precision and GPS, the Gravity Anomaly in Yichuan-Tai’an profile is analyzed in this paper. The Bouguer anomaly is obtained by data correction, and the residual gravity anomaly is obtained by Gaussian low-pass filter. We profile the crustal density structure. Fitting the data along the profile of Bouguer gravity anomaly with the constraint of the Zhucheng-Yichuan deep seismic sounding (DSS) velocity profile, the profile density of crust structure is obtained. The study results show that the trend anomalies mainly reflect the change of the crustal thickness in this section, and Taihang mountain gravity is a cascade with abrupt change of the crustal thickness. A further investigation on the residual gravity anomaly is presented by the comparison of our data with other results in the literature. The results indicate that the residual gravity anomaly mainly reflects the geological structure and shallow low density geological body. The residual gravity anomaly and the geological structure have a good correspondence, and the amplitude reflects the basic characteristics of the geological body with clearer detail than does the Bouguer gravity anomaly.
LUO Xiangfei,QIN Jianzeng,FANG Shengming et al. The Gravity Anomaly in Yichuan-Tai’an Profile and Its Tectonic Significance[J]. jgg, 2016, 36(4): 354-358.
LUO Xiangfei,QIN Jianzeng,FANG Shengming et al. The Gravity Anomaly in Yichuan-Tai’an Profile and Its Tectonic Significance[J]. jgg, 2016, 36(4): 354-358.