Sediment redistribution due to a dense reservoir network in a large semi-arid Brazilian basin
作者： Iran Eduardo Lima Neto , Mário Cesar Wiegand , José Carlos de Araújo
DOI: 10.1080/02626667.2011.553616
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摘要: Abstract This paper investigates for a 25-year period the sediment distribution in semi-arid Brazilian basin (2 × 104 km2) with network containing more than 4000 surface reservoirs. The methodology is based on rating curves and fitted parameters derived from field data. results showed that suspended load corresponded to 70% of total yield (148 t km-2 year-1). relatively low contribution (compared other regions) was attributed impact numerous upstream reservoirs, which retained 235 year-1. micro ( 50 hm3) reservoirs responded to, respectively, 5, 17, 30 48% retention by reservoir network. indicates non-strategic has positive water availability, since siltation strategic would be expected double if only such existed. Citation ...
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