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郯庐断裂带明光-庐江段遥感特征分析
郑颖平,方良好,疏鹏,路硕
作者单位
郑颖平 安徽省地震局, 合肥市长江西路558号 230031 
方良好 安徽省地震局, 合肥市长江西路558号 230031 
疏鹏 安徽省地震局, 合肥市长江西路558号 230031 
路硕 安徽省地震局, 合肥市长江西路558号 230031 
摘要:
利用ETM+、KH卫星影像资料,对郯庐断裂带明光-庐江段开展详细的遥感解译工作,分析其构造地貌及几何展布,并结合现场地质调查加以验证。结果表明,郯庐断裂带明光-庐江段的4条主干断裂在遥感影像中均有表现;西支2条断裂北段明显,南段隐伏,断层沿线发育串珠状湖泊、断塞塘、线性陡坎、弧形等构造;东支2条断裂全段影像线性特征均明显,断层通过处地形凹槽带、线性陡坎、刀砍状断层崖等地貌特征极为发育;野外调查发现,在线性影像特征较明显的地方,断层破碎带均发育,有的宽达几十米,且性质变化明显,该段具有多期多次复杂活动特征。综合遥感解译及现场调查研究认为,本文获得了郯庐断裂带明光-庐江段构造地貌特征及地表几何分布,为该区域地震危险性评价提供了依据。
关键词:  郯庐断裂带明光-庐江段  遥感解译  地质调查  构造地貌
DOI:
分类号:P315
基金项目:“合肥市地震活断层探测及地震危险性分析”项目、“我国城市活动断层探测与地震危险性评价”项目共同资助
Characteristics analysis of remote sensing on the Mingguang-Lujiang segment of the Tancheng-Lujiang fault zone
Zheng Yingping,Fang Lianghao,Shu Peng,Lu Shuo
Abstract:
The Mingguang-Lujiang segment of the Tancheng-Lujiang fault zone is a part of southern Tancheng-Lujiang fault zone. In spite of its rich deep structure research findings,the researches on its structural geomorphology and the overall shallow features are relatively few. The paper uses the detailed remote sensing to interpret the fault,analyzes its structural geomorphology and geometric distribution by using ETM+and KH satellite images data,as well as other geological surveys. The results show that 4 main faults have performances in remote sensing images. The northern segments of the 2 western branches show clear images,but the southern ones do not. Beaded lakes,the fault plug ponds,linear scarps and arc tectonics are formed along the fault. The 2 eastern branches have clear linear features on the images. The topographical grooves,linear scarps and knife shaped fault scarps are well developed along the fault. Field surveys reveal that the fault fracture zones are developed where linear image features are obvious. Some zones have a width of several dozens of meters with significant properties change. The cross section shows the multi-stage complex active characteristics of the fault zone. The remote sensing interpretation and field investigation show that the fault's tectonic geomorphology and surface geometry discussed in the paper provide a background for the further research on the future seismic risk in the zone.
Key words:  Mingguang-Lujiang segment of the Tancheng-Lujiang fault zone  Remote sensing interpretation  Geological surveys  Structural geomorphology