jgg     2014 34 (5):  55-58    ISSN: 0412-1961  CN: 21-1139/TG STUDY ON THE METHOD FOR TRACING AND DISTINGUISHING  PREMONITORY SIGNALS FROM DISTURBANCES IN CRUSTAL  DEFORMATION DATA Earthquake Administration of Yunnan Province，Kunming 650224 Received: 2013-11-13  Revised: null  Online: 2014-09-26 Supporting info