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Interpreting Characteristic Drainage Timescale Variability across Kilombero Valley, Tanzania

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dc.creator Lyon, Steve W.
dc.creator Koutsouris, Alexander
dc.creator Scheibler, Friedemann
dc.creator Jarsjö, Jerker
dc.creator Mbanguka, Rene
dc.creator Tumbo, Madaka
dc.creator Robert, Keven K.
dc.creator Sharma, Asha N.
dc.creator van der Velde, Ype
dc.date 2016-05-26T09:38:13Z
dc.date 2016-05-26T09:38:13Z
dc.date 2015
dc.date.accessioned 2018-04-18T11:18:00Z
dc.date.available 2018-04-18T11:18:00Z
dc.identifier Lyon, S.W., Koutsouris, A., Scheibler, F., Jarsjö, J., Mbanguka, R., Tumbo, M., Robert, K.K., Sharma, A.N. and Velde, Y., 2015. Interpreting characteristic drainage timescale variability across Kilombero Valley, Tanzania. Hydrological Processes, 29(8), pp.1912-1924.
dc.identifier http://hdl.handle.net/20.500.11810/2258
dc.identifier 10.1002/hyp.10304
dc.identifier.uri http://hdl.handle.net/20.500.11810/2258
dc.description We explore seasonal variability and spatiotemporal patterns in characteristic drainage timescale (K) estimated from river discharge records across the Kilombero Valley in central Tanzania. K values were determined using streamflow recession analysis with a Brutsaert–Nieber solution to the linearized Boussinesq equation. Estimated K values were variable, comparing between wet and dry seasons for the relatively small catchments draining upland positions. For the larger catchments draining through valley bottoms, K values were typically longer and more consistent across seasons. Variations in K were compared with long-term averaged, Moderate-resolution Imaging Spectroradiometer-derived monthly evapotranspiration. Although the variations in K were potentially related to evapotranspiration, the influence of data quality and analysis procedure could not be discounted. As such, even though recession analysis offers a potential approach to explore aquifer release timescales and thereby gain insight to a region's hydrology to inform water resources management, care must be taken when interpreting spatiotemporal shifts in K in connection with process representation in regions like the Kilombero Valley
dc.language en
dc.subject Characteristic drainage timescale
dc.subject Streamflow recession analysis
dc.subject Kilombero Valley
dc.subject Water resources management
dc.title Interpreting Characteristic Drainage Timescale Variability across Kilombero Valley, Tanzania
dc.type Journal Article, Peer Reviewed


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