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Remote Sensing for Land & Resources    2019, Vol. 31 Issue (4) : 79-87     DOI: 10.6046/gtzyyg.2019.04.11
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Remote sensing interpretation and spatial distribution characteristics of the Anhui segment of Tanlu fault zone based on multi-source data
Weidong ZHAO1,2,3, Yong ZHENG1, Haonan ZHANG1,2, Qiong JIANG3, Jiajia WEI1,2
1. School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
2. Intelligent Manufacturing Technology Institute, Hefei University of Technology, Hefei 230088, China
3. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China
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Abstract  

In the previous study of the Anhui segment of Tanlu fault zone, it is generally believed that the Anhui segment of Tanlu fault zone is composed of the Wuhe-Hefei fault, the Shimenshan fault, the Chihe-Taihu fault and the Jiashan-Lujiang fault. However, there is no comprehensive and systematic research on the exact boundary position of the fault zone, especially the boundary of the Dabie Mountain in the southern part of the Anhui segment of the Tanlu fault zone. In view of such a situation, based on the multi-source data such as Landsat 8 OLI, ZY-3 and DEM data, the authors comprehensively utilized GIS spatial analysis and spatial statistics to perform remote sensing interpretation of the Anhui segment of Tanlu fault zone and statistical analysis of the interpretation results. The analysis shows the more accurate boundary range of the Anhui segment of Tanlu fault zone. The existing geological data prove that the boundary range is reasonable and reliable to some extent. The study shows that the spatial distribution characteristics of the north and south sections of the Anhui segment of Tanlu fault zone are different. The average trend of the northern section is about N23.5°E, the average width is about 25.99 km, the average trend of the southern section is about N34.9°E, and the average width is about 38.38 km, the overall trend of the whole Anhui segment of Tanlu fault zone is about N33.3°E, with an average width about 30.35 km. The fault zone presents a spatial distribution pattern of “short in the north and long in the south”, “ wide in the south and narrow in the north” and “the fault trend progressively moving northward from south to north”. The research results can provide an important reference for urban planning, engineering construction and geological disaster prevention within the Anhui segment of Tanlu fault zone.
Keywords Tanlu fault zone      remote sensing      multi-source data      spatial analysis     
:  TP79  
Issue Date: 03 December 2019
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Weidong ZHAO
Yong ZHENG
Haonan ZHANG
Qiong JIANG
Jiajia WEI
Cite this article:   
Weidong ZHAO,Yong ZHENG,Haonan ZHANG, et al. Remote sensing interpretation and spatial distribution characteristics of the Anhui segment of Tanlu fault zone based on multi-source data[J]. Remote Sensing for Land & Resources, 2019, 31(4): 79-87.
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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2019.04.11     OR     https://www.gtzyyg.com/EN/Y2019/V31/I4/79
Fig.1  Geological and geomorphic map of the Anhui segment of the Tanlu fault zone
Fig.2  Remote sensing images of the study area
断裂解译标志 主要内容
水平解译标志 色调 由于断裂两侧地层、构造不同而形成不同色调分界线,2种不同色调分界面呈线状延伸,如在地貌单元上表现为平原与丘陵、平原与山地的分界线等
水系 水系局部河段出现异常,如直角状急转弯、直线和折线河段,长而直的峡谷,水系呈现串珠状排列或呈线状分布
植被 植被稀少带、茂盛带或生长异常带,有规律分布
垂直解译标志 山脊线 山脊线等地貌要素的错动呈线状排列
低洼地形 低洼地形如线状沟谷等呈线状分布,且具有明显方向性
断层三角面 一系列断层三角面整齐排布,断层三角面在影像上常表现为暗色调阴影
综合景观 断裂两侧的色调、地貌、水系、纹理、植被以及DEM等综合景观存在差异
Tab.1  Interpretation marks of fracture structures in the study area
Fig.3  Technical flow chart of remote sensing interpretation
Fig.4  Remote sensing image interpretation of the Chihe—Taihu fault
Fig.5  Remote sensing interpretation of small faults in the Dabie Mountains
Fig.6  Comparison of fracture results by remote sensing
断裂名称 断裂走向(NNE向)
五河—合肥断裂 21.8
石门山断裂 21.2
池河—太湖断裂 31.2
嘉山—庐江断裂 20.1
黄梅断裂 44.2
Tab.2  Main fractures trends of Tanlu fault zone(°)
Fig.7  Fracture structure interpretation results in the study area
断裂编号 断裂走向 断裂编号 断裂走向 断裂编号 断裂走向 断裂编号 断裂走向
1 4.0 5 35.6 9 31.4 13 14.1
2 25.8 6 20.1 10 38.3
3 19.8 7 2.3 11 0.3
4 24.7 8 33.5 12 6.7
Tab.3  Fault trend of NNE trending fractures in region I(°)
断裂编号 断裂走向 断裂编号 断裂走向 断裂编号 断裂走向 断裂编号 断裂走向
1 44.4 11 35.2 21 40.6 31 24.5
2 27.7 12 38.7 22 34.4 32 25.6
3 13.9 13 4.5 23 39.1 33 6.7
4 21.1 14 35.3 24 34.4 34 29.8
5 44.7 15 31.9 25 40.1 35 37.7
6 36.3 16 12.4 26 26.7 36 39.1
7 44.4 17 29.4 27 30.6 37 39.3
8 28.1 18 28.4 28 20.6 38 36.5
9 28.0 19 27.3 29 43.6 39 33.2
10 7.5 20 18.7 30 25.6 40 39.9
Tab.4  Fault trend of NNE trending fractures in region Ⅱ(°)
Fig.8  Spatial distribution of the Anhui segment of the Tanlu fault zone
分段区域 东界位置 西界位置 所包含断裂 平均长
度/km		 平均宽
度/km		 平均走向/
(°)		 面积/ km2
北段(嘉山—庐江段) 嘉山—庐江断裂 五河—合肥断裂 五河—合肥断裂、石门山断裂、池河—太湖断裂、嘉山—庐江断裂 261.09 25.99 23.5 6 544.17
南段(庐江—宿松段) 嘉山—庐江断裂与黄梅断裂安徽段的连接线 大别山区NNE向断裂密集区 池河—太湖断裂、黄梅断裂以及大别山区的40条NNE向次级断裂 136.74 38.38 34.9 4 564.95
全段合计 397.83 30.35 33.3 11 109.12
Tab.5  Segmentation and overall statistical information of the Anhui segment of the Tanlu fault zone
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