Sediments accretion at Guarapiranga reservoir, metropolitan region of Sao Paulo, Brazil, by the Pb-210 chronological method

Author(s)

Bonotto, D. M. ; Sabaris, T. P. P. ; Bicudo, D. C. ; Bicudo, C. E. M. ; Fontana, L.

• Document type: Journal article
• Source: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY; v. N/A, p. 14-pg., 2022-06-08.

Abstract

The Constant Flux: Constant Sedimentation (CF:CS) and Constant Rate of Supply (CRS) of unsupported/excess Pb-210 models have been applied to a Pb-210 data set providing of two sediments profiles (GUA-T1 and GUA-T2) sampled at Guarapiranga reservoir, in the Metropolitan Region of Sao Paulo city, Sao Paulo State, Brazil. Sedimentation rates obtained by the CF:CS model corresponded to 9.3-12.3 and 30 mg.cm(- 2)yr(- 1), respectively, for profiles GUA-T1 and GUA-T2, indicating a better chronological performance relatively to that of the CRS model in the study area, also allowing successful estimates of the P fluxes in the reservoir. (AU)

• FAPESP's process: 09/53898-9 - Paleolimnological reconstruction of Guarapiranga Reservoir and diagnosis of water and sediment current quality of SPMR water supply reservoirs facing their management
• Grantee: Carlos Eduardo de Mattos Bicudo
• Support Opportunities: Research Projects - Thematic Grants