jgg     2013 33 (6):  81-85    ISSN: 0412-1961  CN: 21-1139/TG APPLICATION OF IMPROVED GRAVITY ANOMALY GRADIENTS  METHOD IN QUANTITATIVE INTERPRETATION OF GEOMETRIC  PARAMETERS OF 2D FAULT 1) First Crust Deformation Monitoring and Administration Center, CEA, Tianjin 300180 2) Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan 430074 Received: 2013-02-28  Revised: null  Online: 2013-12-13 Supporting info