王艳萍^1,,
DongPinliang²,
廖顺宝¹
1. 防灾科技学院生态与环境学院, 河北 三河 065201
2. 北德克萨斯大学地理与环境系, 德克萨斯州 76203, 美国

基金项目: 中央高校基本科研业务费青年教师资助计划项目（批准号：ZY20160210）和地震科技青年骨干人才培养项目（批准号：20160419030）共同资助


详细信息

作者简介: 王艳萍, 女, 41岁, 副教授, 主要从事GIS、RS的地质灾害应用方面的教科研, E-mail:wangyanping111@163.com

中图分类号: P931.2;P542;P237

收稿日期:2019-05-11
修回日期:2019-07-08
刊出日期:2019-09-30

Geomorphic analysis of the Beijing Plain based on ZY3 DEM and SRTM DEM

Wang Yanping^1,,
Dong Pinliang²,
Liao Shunbao¹
1. College of Ecology and Environment, Institute of Disaster Prevention, Sanhe 065201, Hebei
2. Department of Geography and the Environment, University of North Texas, TX 76203, USA


MSC: P931.2;P542;P237

--> Received Date: 11 May 2019
Revised Date: 08 July 2019
Publish Date: 30 September 2019


摘要
摘要:研究区主要包括北京东部的通州、平谷、顺义、燕郊、大厂和三河，位于华北沉降带北部、阴山东西向构造带南缘。该区地势总体上西北略高，东南略低，为大型缓倾斜平原，地形不仅受本区内北东向断裂的影响，还受北西向断裂的影响。资源三号卫星立体影像（ZY3）DEM和NASA航天飞机雷达地形任务（SRTM）DEM在北京地区地貌特征研究中显示出了许多优于其他DEM的优势。文章利用包括水系偏转、河长坡降指标（SL）、面积-高程积分值（HI）、等值线分级色彩显示和地形粗糙度等几种地形参数，分析了地形特征与断层构造活动性的关系。水系的右旋偏转证实了该区北东向断裂的右旋走滑活动，如夏垫断裂和其他相邻断裂。SL指数表明，河床纵剖面在横跨断层处均是陡坡；HI的高值主要集中在南口-孙河断裂与该区其他北东向断裂的交汇处，夏垫断裂的中段，以及香河县西北部，反映了该区强烈的构造活动，同时也反映出可能存在隐伏断层。另外，研究表明，面积、高程积分值的高值区与低值区相邻衔接处，往往是地震危险性较大的地方。此外，平原区相同值域的面积-高程积分所反映的构造活动强度应该与山区不同，因此地貌演化阶段划分标准也应与山区有所不同。等值线分级色彩显示对地形变化非常敏感，当与已识别的断层重叠时，大部分地形突变的地方都与断层活动有关。地形粗糙度分析显示不同断裂带的地形粗糙度与断裂活动强度呈正相关关系。
关键词: ZY3 DEM/
水系偏转/
河长坡降(SL)/
面积-高程积分(HI)/
地形粗糙度

Abstract:This paper presents the methods and results of geomorphic analysis in the Beijing Plain using ZY3 DEM and SRTM DEM. Several geomorphic parameters related to fault activity are analyzed, including the drainage system deflection, stream length-gradient (SL), hypsometric integral (HI), contour color display and terrain roughness.
The right lateral deflection of the drainage system confirms the right lateral strike slip activity of the North-East trending faults in this area, including Xiadian fault and other adjacent faults. The SL-Indices indicate that all longitudinal sections of the riverbeds passing through faults have steep slopes. The high value of HI is mainly at the intersection of Nankou-Sunhe fault and other NE-trending faults in this area, and the middle segment of Xiadian fault, which reflects the strong tectonic activity. In addition, the high value of HI in the north-west of Xianghe County also reflects that there may be hidden active faults. It is presumed that where the high and low values of HI are adjacent to each other, they are often places with high seismic risk. In addition, the authors believe that the tectonic activity in plain area should be greater than that in mountainous area with the same HI value. The contour color display is very sensitive to the change of topography. When overlapped with the recognized faults, most of the places where topographic changes abruptly are related to the fault activity. The terrain roughness in different fault zones shows a positive correlation between the intensity of fault activity and the terrain roughness. The topographic index of the plain area not only reflects the result of erosion and deposition, but also shows the level of tectonic activity.
Key words:ZY3 DEM/
drainage deflection/
Stream Length-gradient(SL)/
Hypsometric Integral(HI)/
terrain roughness



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