jgg     2011 31 (4):  6-9    ISSN: 0412-1961  CN: 21-1139/TG APPLICATION OF S TRANSFORM IN ANALYSIS OF STRAIN CHANGES BEFORE AND AFTER WENCHUAN EARTHQUAKE Liu Qi; and Zhang Jing Institute of Earthquake Science, CEA, Beijing 100036 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null