The seismic evidences of velocity variation for Changbaishan volcanism in Northeast China
Fengxue Zhang1,2, Qingju Wu1, Yonghua Li3, Ruiqing Zhang1 and Jiatie Pan1, (1)Institute of Geophysics, China Earthquake Administration, Beijing, China, (2)Institute of Geophysics, China Earthquake Administration, China Earthquake Administration, Beijing, China, (3)IGP Institute of Geophysics, China Earthquake Administration, Beijing, China