[Xu, Hong-ge] China Univ Geosci, Inst Geophys & Geomat, Wuhan 430074, Peoples R China.
[She, Zhi-Lei; Xu, Hong-ge; Chen, Gang; Xie, Yi-Long; Zheng, Liang] China Univ Geosci, Sch Math & Phys, Wuhan 430074, Peoples R China.
[Sa, Ben-Hao; Yan, Yu-Liang] China Inst Atom Energy, POB 275 10, Beijing 102413, Peoples R China.
[Zhou, Dai-Mei] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430082, Peoples R China.