jgg     2008 28 (5):  16-20    ISSN: 0412-1961  CN: 21-1139/TG TRIGGER ACTION OF BRIDGMAN EFFECT ON STRONG EARTHQUAKES ANALYZED FROM DEEP TECTONIC CHARACTERISTICS Li Songlin 1) ; Lai Xiaoling 1) ; He Jiayong 2) ; and Tian Jianhua 1) 1)Geophysical Exploration Center, CEA，Zhengzhou 4500022)Institute of Geophysics，CEA，Beijing 100081 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null