CAS Key Laboratory of Ocean and Marginal Sea Geology;
South China Sea Institute of Oceanology;
Chinese Academy of Sciences;
Guangzhou 510301;
China;
Seismological Bureau of Guangdong Province;
Guangzhou 510070;
China;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
Dangan; Island; intraplate; seismicity; South; China; Sea; crustal; velocity; model; seismogenic; structure;