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Lookup NU author(s): Dr James Bathurst
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The runoff and sediment yield processes in a representative basin located in the semiarid region of Northeast Brazil (SeNeB) were modelled with the physically based and spatially distributed model SHETRAN. Field data were used to parameterize, test, validate, and simulate the runoff and sediment yields. The model parameters were tested at plot area scales (100 m2) and then used to simulate larger catchments (0.5 ha-140 km2) with different grid resolutions. The results achieved at every basin scale and grid size showed that observed runoff and sediment yields were simulated with physically meaningful results. Similar results were produced with different grid size resolutions applied to the larger catchments, but peak discharges, annual volumes, and sediment yields varied with the land use, rainfall regime, and basin area. Simulated sediment yields decreased as basin area increased, and relationships were established for different conditions of land use and rainfall.
Author(s): De Figueiredo E, Bathurst JC
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: IAHS VIIth Scientific Assembly
Year of Conference: 2005
Pages: 110-118
Publisher: IAHS Publication
