River systems and their sediment flux, Indo‐Gangetic plains, Northern Bihar, India
River systems and their sediment flux, Indo‐Gangetic plains, Northern Bihar, India
复制标题
印度比哈尔邦北部印度恒河平原的河流系统及其沉积通量
DOI：
10.1111/j.1365-3091.1994.tb01426.x
复制
发表时间：
1994
期刊：
影响因子：
3.5
通讯作者：
P. Friend
中科院分区：
文献类型：
--
作者：
R. Sinha;P. Friend
描述了印度北方比哈尔邦平原喜马拉雅前陆部分地区的河流系统的河道形态、水文和悬沙特征。提出了一个简单的分类的河流系统的基础上，主要是源区的特点：（一）山区喂养，（二）山麓喂养，（三）平原喂养和（四）混合喂养的河流。这些河流系统之间存在着明显的差异。大多数河流都有河道运动的迹象，主要是撕脱，但也有局部断流的情况。山区河流流量大、含沙量低，平原河流流量小、含沙量高。山麓河流的流量和悬浮泥沙浓度值适中。山区河流形成了大范围的巨型扇，而山麓河流和平原河流则形成了泥泞的扇间区。对水沙通量的半定量估算表明，进入平原的物质中约99.9%是水，其余0.1%是沉积物，其中10%（占总量的0.01%）被保留在盆地中，其余被转移到孟加拉扇
River systems of part of the Himalayan foreland, northern Bihar plains, India, are described in terms of their channel morphology, hydrology and suspended sediment characteristics. A simple classification of the river systems based mainly on the source area characteristics is proposed: (i) mountain-fed, (ii) foothills-fed, (iii) plains-fed and (iv) mixed-fed rivers. Distinct differences are noted between these classes of river systems. Most rivers show evidence of channel movement, mainly by avulsion, but cut-offs also occur locally. The mountain-fed rivers are characterized by very high discharge and low suspended sediment concentration and the plains-fed rivers have relatively low discharge and high suspended sediment concentration. The foothill-fed rivers have moderate values of discharge and suspended sediment concentration. The mountain-fed rivers have built megafans of large extent, whereas the foothills-fed and plains-fed rivers have formed muddy interfan areas. Semi-quantitative estimates of water and sediment flux suggest that about 99.9% of the mass transfer into the plains is water, with the remaining 0.1’%, being sediment, and that 10‘s of the latter (0.01% of the total) is retained in the basin, the remainder being transferred to the Bengal Fan