jgg     2013 33 (2):  27-30    ISSN: 0412-1961  CN: 21-1139/TG CORNER FREQUENCY CHARACTERISTIC OF TECTONIC  EARTHQUAKES AND COLLAPSED ONES IN THREE  GORGES REGION 1）Key Laboratory of Earthquake Geodesy, Institute of Seismology, CEA, Wuhan 430071 2）Institute of Geophysics, CEA, Beijing 100081 Received: 2012-12-25  Revised: null  Online: 2013-04-18 Supporting info