Inversion of Tectonic Stress Field in Sichuan-Yunnan Area Using
EGM2008 Model and Ground Gravity Observation
1 Xi’an Research Institute of Surveying and Mapping, 1 Mid-Yanta Road, Xi’an 710054,China
2 State Key Laboratory of Geo-Information Engineering, 1 Mid-Yanta Road, Xi’an 710054,China
3 Technical Division of Surveying and Mapping, 36 Xiying Road, Xi’an 710054,China
Abstract There is a close relationship between gravity and tectonic stress. The tectonic stress field in Sichuan-Yunnan area is computed with the EGM2008 gravity model and ground gravity observation data respectively. Characteristics of the tectonic stress field in the Sichuan-Yunnan area are summarized. The results show that the inversion results are consistent. The tectonic stress field in Sichuan-Yunnan area is complicated. Tectonic stress distribution is gathered in high degree obviously in the Longmenshan and the Jiali fault zones, where average tectonic stress is higher than in other zones. The tectonic stress results observed in the Longmenshan and Jiali fault zones reflect that the tectonic movement is active in the region and corresponds with historical earthquake data.
GUO Feixiao,XIAO Yun,MIAO Yuewang. Inversion of Tectonic Stress Field in Sichuan-Yunnan Area Using
EGM2008 Model and Ground Gravity Observation[J]. jgg, 2015, 35(3): 445-448.
GUO Feixiao,XIAO Yun,MIAO Yuewang. Inversion of Tectonic Stress Field in Sichuan-Yunnan Area Using
EGM2008 Model and Ground Gravity Observation[J]. jgg, 2015, 35(3): 445-448.
