Sedimentation rates in the Corumbataí River basin, Brazil, derived from 210Pb measurements
MetadataShow full item record
Activity profiles of excess 210Pb measured in four sediment cores from the Corumbataí River basin, São Paulo State, Brazil, provided an opportunity to evaluate sedimentation rates that are helpful for defining appropriate management strategies for the hydrological resources in the basin. This is because Rio Claro city and other municipalities make extensive use of surface waters for drinking water supply. The radiochemical analysis of the sediment cores yielded apparent sediment mass accumulation rates of between 406 and 1014 mg cm-2 year-1 for secondary drainage lines, whereas an intermediate value of 546 mg cm-2 year-1 was found in the Corumbataí River, the main drainage system of the studied area. These values provided estimates of average linear sedimentation rates of between 3.1 and 16.2 mm year-1 that are compatible with field evidence, with the highest value corresponding with an area characterized by accumulation of sediment.
How to cite this document
Showing items related by title, author, creator and subject.
Bonotto, Daniel Marcos ; Miyashiro de Almeida, Kelly Yaeko; Sieber, Sammy Sampaio (Sediment Budgets 1, 2005) [Trabalho apresentado em evento]Activity profiles of excess Pb-210 measured in four sediment cores from the Corumbatai River basin, São Paulo State, Brazil, provided an opportunity to evaluate sedimentation rates that are helpful for defining appropriate ...
Sedimentation rates in Atibaia River basin, São Paulo State, Brazil, using Pb-210 as geochronometer Sabaris, T. P. P. ; Bonotto, Daniel Marcos (Applied Radiation and Isotopes, 2011) [Artigo]The constant initial concentration (CIC) of unsupported/excess Pb-210 model was successfully used to assess Pb-210 data of nine sediment cores from Atibaia River basin São Paulo State Brazil The Pb-210-based apparent ...
Use of Chemometric Tools to Determine the Source of Metals in Sediments of the Rivers of the Turvo/Grande Hydrographical Basin, Sao Paulo State, Brazil Campanha, Mariele B. ; Romera, Joao Paulo ; Coelho, Jessica ; Pereira-Filho, Edenir R.; Moreira, Altair B. ; Bisinoti, Marcia C. (Journal of the Brazilian Chemical Society, 2014) [Artigo]In this work, nine metals were determined in superficial samples and sediment cores obtained from five sampling sites in the Preto, Turvo, and Grande Rivers during the wet and dry seasons. The metals were determined by ...