OBSERVATIONAL RESULTS OF GRAVITATONAL VALUES OF JIANCHUAN, LUQUAN AND SHIPING EARTHQUAKES
Deng Xiaoli Tang Boxiong Xing Changfei (Seismological Bureau of Yunnan Prvince, Kunming)
This paper has analysed and studied the mobile gravitational measurements data made before and after the Jianchuan, Luquan and Shiping earthquakes. The result shows that gravitational anomalous variations didn't appear before and after the Jianchuan and Luquan earthquakes under the conditions that the observational lines are six to sixty km from the epicenters and the observational accuracy was from ±20-±25 microgals. Some gravitational tendency variations have beenobserved on the EW Yangwu-Shiping observational line profile prior to the Shiping earthquake.