jgg     2015 35 (4):  594-599    ISSN: 0412-1961  CN: 21-1139/TG Deformation Behavior of Cross-Fault Leveling in the Capital Circle  Region before and after the March 11, 2011 M9.0 Tohoku-Oki  Earthquake and Its Genetic Mechanism 1 Key Laboratory of Crustal Dynamics, Institute of Crustal Dynamics, CEA, 1 Anningzhuang Road, Beijing 100085, China 2 School of Earth Sciences and Resources, China University of Geosciences (Beijing), 29 Xueyuan Road, Beijing 100083, China Received: 2014-06-23  Revised: null  Online: 2015-07-29 Supporting info