[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"item-2171":3},{"id":4,"title":5,"url":6,"summary":7,"summary_zh":8,"content":9,"source_name":10,"source_url":6,"published_at":11,"category":12,"cover_url":9,"hotness":13,"is_selected":14,"score":15,"score_detail":16,"sources":18,"tags":20,"view_count":15,"doi":25,"paper":26,"created_at":44},2171,"Hydraulic geometry analyses of the Kohora River, Assam, India","https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs44288-026-00719-8","The Hydraulic geometry is crucial for understanding the hydrodynamic behavior in fluvial system. The present research analyzes the variation of hydraulic geometry parameters at-a-station and downstream sites along the Kohora River, Assam (India) aiming to quantify the exponential correlation between these parameters and the river’s flow discharge. For this research, six hydrological stations C1,C2,C3,C4,C5 and C6 are utilized to investigate the cross sectional hydraulic properties of Kohora River which are located at various sites along the river course. For each cross-section, a range of hydraulic geometry parameters including width, depth and velocity are recorded at different locations, and subsequent discharge is computed based on these parameters. To complement field-based observations, Landsat 8 satellite imagery (30 m spatial resolution) was processed using ArcGIS 10.7.1 to assess the river basin characteristics. The vegetation characteristics were examined by applying the Normalized Difference Vegetation Index (NDVI), while surface water extent and moisture variability were analyzed through the Normalized Difference Water Index (NDWI), providing supporting insights into catchment conditions influencing fluvial processes. Based on the present study, the mean values of exponents b, f, m which represent the scaling rates of change in width, depth and velocity were determined to be 0.334, 0.538 and 0.134 while the average values of coefficients a, c, k were noted to be 4.46, 0.56, 0.40 for at-a-station hydraulic geometry. For downstream hydraulic geometry, the exponents b, f, and m were 0.2, 0.4, and 0.4, while the coefficients a, c, and k were 5.19, 0.57, and 0.35. These values indicate a positive exponential relationship between the downstream hydraulic geometry parameters and flow discharge in Kohora River. The outcome of the present study is expected to be applicable to improving the watershed management of the river basin.","水力几何关系对于理解河流系统中的水动力行为至关重要。本研究分析了印度阿萨姆邦科霍拉河沿程站点和下游站点的水力几何参数变化，旨在量化这些参数与河流流量之间的指数相关关系。本研究利用C1、C2、C3、C4、C5和C6六个水文站，对科霍拉河沿河不同位置的断面水力特性进行了调查。对于每个断面，在不同位置记录了包括宽度、水深和流速在内的一系列水力几何参数，并据此计算了相应流量。为补充实地观测，利用ArcGIS 10.7.1处理了Landsat 8卫星影像（30 m空间分辨率），以评估流域特征。通过归一化植被指数（NDVI）考察植被特征，同时通过归一化水体指数（NDWI）分析地表水体范围和水分变异性，为影响河流过程的集水区条件提供了辅助认识。基于本研究，代表宽度、水深和流速变化缩放率的指数b、f、m的均值分别为0.334、0.538和0.134，而站点水力几何关系的系数a、c、k的平均值分别为4.46、0.56和0.40。对于下游水力几何关系，指数b、f和m分别为0.2、0.4和0.4，系数a、c和k分别为5.19、0.57和0.35。这些数值表明，科霍拉河下游水力几何参数与流量之间存在正指数关系。本研究成果有望应用于改善该流域的流域管理。",null,"Discover Geoscience","2026-09-09T00:00:00Z","论文",10,false,0,{"impact":15,"substance":15,"depth":15,"authority":15,"freshness":15,"relevant":15,"comment":17},"印度河流水文几何论文，与三农、农业信息化、智慧农业无直接关联，不建议进入每日精选。",[19],{"name":10,"url":6},[21,22,23,24],"NDVI","遥感监测","水文分析","流域管理","10.1007\u002Fs44288-026-00719-8",{"doi":25,"openalex_id":27,"authors":28,"venue":10,"cited_by_count":15,"oa_url":36,"card":37,"direction":41,"ingested_from":43},"W7212051368",[29,31,34],{"name":30,"orcid":9},"S. Rai Choudhury",{"name":32,"orcid":33},"Niranjan Bhattacharjee","https:\u002F\u002Forcid.org\u002F0000-0003-4205-0682",{"name":35,"orcid":9},"Dharitri Choudhury","https:\u002F\u002Flink.springer.com\u002Fcontent\u002Fpdf\u002F10.1007\u002Fs44288-026-00719-8.pdf",{"tldr":38,"method":39,"finding":40,"direction":41,"opportunity":42},"分析印度科霍拉河的水力几何参数，量化其与流量的指数关系。","6个水文站实测断面参数，结合Landsat 8影像与NDVI\u002FNDWI分析。","站点与下游水力几何参数均与流量呈正指数关系，下游指数b=0.2、f=0.4、m=0.4。","农业遥感与作物表型","可结合遥感与水文模型，研究河流水力几何对流域农业灌溉与洪泛区管理的影响。","openalex","2026-09-11T23:30:31.628460Z"]