干旱区生态环境知识资源中心(Arid): Assessing Floods and Droughts in Ungauged Small Reservoirs with Long-Term Landsat Imagery

Arid

DOI	10.3390/geosciences6040042
	Assessing Floods and Droughts in Ungauged Small Reservoirs with Long-Term Landsat Imagery
	Ogilvie, Andrew; Belaud, Gilles; Massuel, Sylvain; Mulligan, Mark; Le Goulven, Patrick; Calvez, Roger
通讯作者	Ogilvie, A
来源期刊	GEOSCIENCES
EISSN	2076-3263
出版年	2016
卷号	6 期号:4
英文摘要	Small reservoirs have developed across semi-arid areas as a low cost solution for millions of rural small holders to harvest scarce water resources. Studies have highlighted limited agricultural water use and low water availability on individual reservoirs, but no information exists on the drought patterns of multiple small reservoirs. Their small size and dispersion prevents individualised hydrological monitoring, while hydrological modelling suffers from rainfall variability and heterogeneity across data sparse catchments and reservoirs. A semi-automated original approach exploiting free, archive Landsat satellite images is developed here for long-term monitoring of multiple ungauged small water bodies. Adapted and tested against significant hydrometric time series on three lakes, the method confirms its potential to monitor water availability on the smallest water bodies (1-10 ha) with a mean RMSE of 20,600 m(3) (NRMSE = 26%). Uncertainties from the absence of site-specific and updated surface-volume rating curves were here contained through a power relationship adapted over time for silting based on data from 15 surrounding lakes. Applied to 51 small reservoirs and 546 images over 1999-2014, results highlight the ability of this transposable method to shed light on flood dynamics and allow inter annual and inter lake comparisons of water availability. In the Merguellil upper catchment, in Central Tunisia, results reveal the significant droughts affecting over 80% of reservoirs, confirming the need for small reservoirs to maintain a supplementary irrigation objective only.
英文关键词	water harvesting remote sensing Landsat agricultural water availability Tunisia
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000410154500001
WOS关键词	TOPOGRAPHIC CORRECTION METHODS ; UPPER EAST REGION ; SEMIARID ENVIRONMENT ; STORAGE CAPACITIES ; WATER-USE ; MODIS ; CLASSIFICATION ; RESOLUTION ; HYDROLOGY ; DYNAMICS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
Scopus学科分类	Kings Coll London, Dept Geog, London WC2R 2LS, England.
来源机构	French National Research Institute for Sustainable Development ; University of London
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331904
作者单位	[Ogilvie, Andrew; Massuel, Sylvain; Le Goulven, Patrick; Calvez, Roger] IRD, UMR G Eau, BP 5095, F-34196 Montpellier 5, France; [Ogilvie, Andrew; Mulligan, Mark] Kings Coll London, Dept Geog, London WC2R 2LS, England; [Belaud, Gilles] Montpellier SupAgro, UMR G Eau, F-34060 Montpellier, France
推荐引用方式 GB/T 7714	Ogilvie, Andrew,Belaud, Gilles,Massuel, Sylvain,et al. Assessing Floods and Droughts in Ungauged Small Reservoirs with Long-Term Landsat Imagery[J]. French National Research Institute for Sustainable Development, University of London,2016,6(4).
APA	Ogilvie, Andrew,Belaud, Gilles,Massuel, Sylvain,Mulligan, Mark,Le Goulven, Patrick,&Calvez, Roger.(2016).Assessing Floods and Droughts in Ungauged Small Reservoirs with Long-Term Landsat Imagery.GEOSCIENCES,6(4).
MLA	Ogilvie, Andrew,et al."Assessing Floods and Droughts in Ungauged Small Reservoirs with Long-Term Landsat Imagery".GEOSCIENCES 6.4(2016).