Variational Characteristics of Load/Unload Response Ratio in Hainan Island and Its Adjacent Area before Moderate-strong Earthquakes
REN Jun~(1),CHEN Yun-ping~(2),PAN Ji-shun~(3), SHEN Fan-luan~(2),FU Gan~(2) (1.Seismological Bureau of Shaanxi Province, Xi'an, Shaanxi, 710068,China; 2.Seismological Bureau of Hainan Province, Haikou, Hainan 570203,Chian; 3.Center of Geophysical Prospection, CSB, Zhengzhou, Henan 450002,Chian)
Using the seismic strain energy as the response factor,the anomalous characteristics of Load/Unload Response Ratio before moderate-strong earthquakes in Hainan Island and its adjacent area are analysed. The research result indicates that the high anomaly of LURR is a kind of medium-term and short-term precursor before moderate-strong earthquake in this region. It could be a new method for earthquake prediction.