The significance of morphometric analysis to understand the hydrological and morphological characteristics in two different morpho-climatic settings
The significance of morphometric analysis to understand the hydrological and morphological characteristics in two different morpho-climatic settings
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形态测量分析对于了解两种不同形态气候环境下的水文和形态特征的意义
DOI：
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发表时间：
2019
影响因子：
5.5
通讯作者：
Avijit Mahala
中科院分区：
文献类型：
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作者：
Avijit Mahala
流域地貌参数是了解区域水文地貌特征的重要指标。本研究的目的是了解水文和形态特征，在两个不同的地形气候背景下，从流域的形态测量参数。遥感和地理信息系统已被用作描绘和理解任何流域地貌的有效工具。本研究选择了印度北方山区-平原热带环境的科西河流域和印度东部高原-平原亚湿润环境的Kangsabati河流域。在地貌参数的线性、面积和起伏方面，强调了地质、地貌、水文、河流特征。利用ARC GIS 10.1中的高级星载热辐射和反射辐射计全球DEM（90 m），确定并测量了流域形态参数。山地平原湿润科西河流域的线性地貌测量均显示其具有较高的洪水潜势，而康萨巴提河流域的线性地貌测量则显示其洪水潜势较小，具有亚湿润环境的高原地貌特征。平均分叉比也表明科西河比康萨巴提河具有更大的洪水潜力。科西河由于其接近圆形的盆地形状，比具有细长形状的康萨巴蒂河排放了大量的水。这些地貌特征表明，以热带山地-平原环境为主的科西河流域处于地貌发育的再生或年轻阶段，而以半湿润高原-平原环境为主的康萨巴提河流域处于地貌发育的成熟阶段。大多数地貌特征表明，地质地貌对流域特征有很高的控制作用。遥感和地理信息系统工具已成功地实施了整个研究，以了解在两个不同的形态气候设置的形态特征。研究结果可为研究区的规划编制和可持续管理提供参考。
Drainage morphometric parameters are important indicator to understand the hydrological and morphological characteristics of any region. Present study aims to understand the hydrological and morphological characteristics in two different morpho-climatic settings from drainage basin morphometric parameters. Remote sensing and GIS have been used as efficient tools in delineating and understanding of any drainage basin morphometry. The Kosi River basin of northern India for the mountain–plain tropical environment and Kangsabati River basin of eastern India for the plateau–plain sub-humid environment has been selected for the present study. The geological, geomorphological, hydrological, fluvial characteristics have been stressed out under linear, areal and relief aspects of morphometric parameters. The drainage morphometric parameters have been determined and measured after using the Advanced Space borne Thermal Emission and Reflection Radiometer global DEM (90 m) in ARC GIS 10.1. All the linear morphometric measures of mountain–plain humid Kosi River basin indicate its high flood potentiality, whereas, linear morphometric measures of Kangsabati River basin indicate less flood potentiality and plateau landform characteristics of sub-humid environment. The mean bifurcation ratio also indicates Kosi River has greater flood potentiality than Kangsabati River. Kosi River has drained large amount of water due to its near-circular basin shape than Kangsabati River which has an elongated shape. All the relief characteristics indicate that tropical mountain–plain environment dominated Kosi River basin is in rejuvenated or young stage of geomorphic development, whereas sub-humid plateau–plain dominated Kangsabati River basin is in mature stage of geomorphic development. Most of the morphometric characteristics indicate there are high geologic and geomorphological controls on river basin characteristics. The remote sensing and GIS tool have been successfully implemented throughout the study to understand the morphometric characteristics in two different morpho-climatic settings. Also, the results can be used for plan formation and sustainable management of the study area.