关键词: 郯城－庐江断裂带, 断层活动, 水准测量

Abstract: Mobile leveling data measured across faults in three provinces Jiangsu,Shandong and Anhui are analyzed systematically and completely time and space,and all the observation curves removing the long-time linear components are gmen to show abnormal features.The abnormal activities of the faults are analyzed one by one with the knowledge of geological structure.The result shows that the fault activites have a trend of being strengthened from 1991 in the Tanlu fault zone,that is,the Tanlu fault zone is being active.The activity of the south segment of the Tanlu fault zone is extensional,in the middle and north part of it,the fault activity behaves compressional.While in the east to Maoshan mountain,the fault activity is mainly compressional.All the anomalies occurred to mainly in 1991 and 1995,their distribution in the time-sapce is relatively concentrated.These facts show that the stress field has had comparatively more variation in this area.These results and conclusions have important materta value and reference value for further researches on geoaynamics,crustal deformation monitoring earthquake prediction and recent tectonic movement.

Key words: Tancheng-Lujiang fault zone, Faulting, Leveling