Regional Characteristics of Gravity Field Change before theYunnan Jinggu M6.6 Earthquake
1 Key Laboratory of Earthquake Geodesy，Institute of Seismology,CEA,40 Hongshance Road,Wuhan 430071,China
2 Wuhan Base for Institute of Crustal Dynamics, CEA, 40 Hongshance Road, Wuhan 430071,China
Abstract Based on major national construction projects in recent years in gravity network and the earthquake in Yunnan province regional gravity network we obtained high accuracy gravity observation data, the analysis and research on October 7, 2014, Yunnan Jinggu M6.6 earthquake before the evolution process of gravitational field. The results showed that The evolution on Yunnan southwest regional gravity field changes the amplitude of the big, fast speed, rising and falling transition cycle is short, revealing the complex tectonic environment and repeatedly enhanced under the condition of stress field, seismic energy accumulation and release the regional characteristics of fast.
SUN Shaoan,HAO Hongtao,WEI Jin. Regional Characteristics of Gravity Field Change before theYunnan Jinggu M6.6 Earthquake[J]. jgg, 2015, 35(4): 613-615.
SUN Shaoan,HAO Hongtao,WEI Jin. Regional Characteristics of Gravity Field Change before theYunnan Jinggu M6.6 Earthquake[J]. jgg, 2015, 35(4): 613-615.
