A Simple Conceptual Model of Sediment Yield

被引：32

作者：

Bhunya, Pradeep Kumar ^{[1
]}

Jain, S. K. ^{[3
]}

Singh, P. K. ^{[2
]}

Mishra, S. K. ^{[3
]}

机构：

[1] Natl Inst Hydrol, Roorkee, Uttar Pradesh, India

[2] Anand Agr Univ, Dept Soil & Water Engn, Anand, Gujarat, India

[3] Indian Inst Technol, Dept Water Resources Dev & Management, Roorkee, Uttar Pradesh, India

来源：

WATER RESOURCES MANAGEMENT | 2010年 / 24卷 / 08期

关键词：

SCS-CN method; Instantaneous unit sediment graph (IUSG); Catchment routing; Sediment graph; Sediment delivery ratio; EROSION; TRANSPORT; UPLAND; GRAPH;

D O I：

10.1007/s11269-009-9520-4

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The sediment graphs (time distribution of sediment yield) are very essential if the sediment transports the pollutants that are toxic at high concentrations, requiring determination of peak, rather than average sediment flow rate. In this paper, an effort has been made to develop a simple conceptual model of sediment yield based on Soil Conservation Service Curve Number (SCS-CN) method, instantaneous unit sediment graph (IUSG) method, and Power law and the performance is tested using real field data of Chaukhutia watershed of Ramganga river catchment (area = 452.25 km(2)). The proposed model is found to provide realistic estimates of temporal variation of sediment yield as well as total sediment yield during a storm event. The model is found to be most sensitive to parameter beta followed by k, alpha, A, and n(s). A comparison is made with the existing IUSG based models of Kumar and Rastogi (J Hydrol 95: 155-163, 1987) and Raghuwanshi et al. (J Hydraul Eng ASCE 120(4): 495-503, 1994) for developing sediment graphs.

引用

页码：1697 / 1716

页数：20

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