【摘要】 郯庐断裂带是中国东部规模最大的构造活动带,研究选择沂沭断裂带南段临沂地区为解译区,通过对该区OLI影像预处理、图像拉伸、边缘增强、多重主成分分析以及纹理分析等,解译出临沂地区发育17条主要断裂,其中区域主干断裂5条,主要为NNE向;主要次级断裂12条,包括NNE向次级断裂2条,NW-SE次级断裂4条,近SN向次级断裂3条,近EW向3条。同时,这四个方向上还发育大量小型次级断裂。更多还原

【Abstract】 Tanlu fault,discovered by an aeromagnetic survey in 1957,is the largest active tectonic belt in the east of China.Predecessors conducted further studies and achieved numerous achievements on Tanlu fault by the integrated geophysical exploration,seismic tomography,methods of GPS and so on.Some scholars used remote sensing image to interpret linear structures which almost concentrated in northern Yishu fault in this seismic zone and the quality of images of TM or ETM are poorly understood.The following research chose the southern part of Yishu fault located in the region of Linyi as the interpretation area,using data of radiometric calibration,atmospheric correction,image fusion,image stretch,spatial filtering enhancement’as well as multiple principal component and texture analysis are used to interpret a higher quality remote sensing OLI image provided by Landsat-8.The final result displays that there are 17 important faults in the region of Linyi-5 principal faults along NNE,2 subsidiary faults along NNE,4 subsidiary faults along NW-SE,3 subsidiary fault near the direction of SN and other 3 subsidiary faults near the direction of EW.Besides,many small faults distribute in all these four directions near the 17 significant faults.更多还原