Hydro-hypsometric analysis of tropical river basins,Southwest Coast of India using geospatial technology  

作　　者：Gopinath GIRISH Ambili Gopalan KAMALAMMA N P JESIYA Kuriachan LEMOON 

机构地区：[1]Centre for Water Resources Development and Management,Kerala 673571,India

出　　处：《Journal of Mountain Science》2016年第5期939-946,共8页山地科学学报（英文）

摘　　要：The key aspect in planning and management of water resources is to analyze the runoff potential and erosion status of the river basin.For the detailed investigation of hydrological response freely available Cartosat-1(IRS-P5) data was used for the preparation of digital elevation model(DEM).The runoff potential and type of erosive process of 22 river basins originating in the global biodiversity hotspot of Western Ghats,was inferred through hypsometric analysis.Several parameters like Hypsometric integral(HI),maximum concavity(Eh),coordinates of slope inflection point(I) given by a* and h* and normalized height of hypsometric curve(h) were extracted from the hypsometric curves and used for understanding the hydrological responses.From the hypsometric curves,the landform evolution processes were inferred.Contribution of diffusive and fluvial processes in slope degradation of the river basins was understood.Basins with lesser area(<100 km^2) were found to have a positive correlation between hypsometric integral and basin area,whereas for large basins no such correlation exists.Based on the study,river basins can be prioritized for the appropriate conservation measures.

关 键 词：HYPSOMETRY Runoff potential Erosion status Cartosat-1 data River Basins 

分 类 号：P333[天文地球—水文科学]