干旱区生态环境知识资源中心(Arid): Soil Moisture Accounting (SMA) based sediment graph models for small watersheds

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DOI	10.1016/j.jhydrol.2019.04.077
	Soil Moisture Accounting (SMA) based sediment graph models for small watersheds
	Gupta, Sushindra Kumar 1; Tyagi, Jaivir 2; Singh, P. K.3; Sharma, Gunwant 1; Jethoo, A. S.1
通讯作者	Gupta, Sushindra Kumar
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	574 页码:1129-1151
英文摘要	The sediment graph models are useful for computation of sediment yield as well as total sediment out flow from watershed. In this study, the analytical development of proposed sediment graph models is based on Soil Moisture Accounting (SMA) procedure coupled Soil Conservation Service-Curve Number (SCS-CN) method, Nash's Instantaneous Unit Sediment Graph (IUSG)model and Power law. This coupling has led to the development of four sediment graph models (SGMs), i.e., SMA-SGM1, SMA-SGM2, SMA-SGM-3 and SMA-SGM4 depending on the four different hydrologic conditions as: (i) initial soil moisture (V-0) = 0 and initial abstraction (I-a) = 0, (ii) initial soil moisture (V-0) not equal OandinitialabstractionIa = 0, (iii) initial soil moisture (V-0) = 0 and (I-a) - 0, and (iv) initial soil moisture (V-0) not equal 0 and initial abstration (I-a) not equal 0, respectively. These models are applied on six natural watersheds with nineteen storm events having different land use/land cover, climatic condition (arid, semi-arid, humid and sub-tropical), rainfall and land slope conditions. The goodness-of-fit statistics is evaluated in terms of Nash Sutcliffe efficiency (NSE) and relative error (RE) between observed and simulated (calibrated and validated) sediment graphs. Further, the performance of these models is also compared with the sediment graph model of Bhunya et al. (2010) (BSGM) on all the six study watersheds. It is found that the proposed models perform very well in simulating sediment yield generation process for all the watersheds and show significant improvement over the BSGM model.
英文关键词	Soil Moisture Accounting (SMA) SCS-CN method IUSG Nash model Sediment graph
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000476962800089
WOS关键词	2-PARAMETER GAMMA-DISTRIBUTION ; CN ; DERIVATION
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217159
作者单位	1.Malaviya Natl Inst Technol, Dept Civil Engn, Jaipur 302017, Rajasthan, India; 2.Natl Inst Hydrol, Surface Water Hydrol Div, Roorkee 247667, Uttarakhand, India; 3.Natl Inst Hydrol, Water Resources Syst Div, Roorkee 247667, Uttarakhand, India
推荐引用方式 GB/T 7714	Gupta, Sushindra Kumar,Tyagi, Jaivir,Singh, P. K.,et al. Soil Moisture Accounting (SMA) based sediment graph models for small watersheds[J],2019,574:1129-1151.
APA	Gupta, Sushindra Kumar,Tyagi, Jaivir,Singh, P. K.,Sharma, Gunwant,&Jethoo, A. S..(2019).Soil Moisture Accounting (SMA) based sediment graph models for small watersheds.JOURNAL OF HYDROLOGY,574,1129-1151.
MLA	Gupta, Sushindra Kumar,et al."Soil Moisture Accounting (SMA) based sediment graph models for small watersheds".JOURNAL OF HYDROLOGY 574(2019):1129-1151.