GEOCHRONOLOGY FOR EVALUATION OF STREAM PIRACY PROCESSES: APPLICATION IN SEDIMENTS OF DRY VALLEYS OF GUARATUBA(SP).

• Grant number: 16/06654-0
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: June 01, 2016
• End date: May 31, 2019
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Physical Geography
• Principal Investigator: Déborah de Oliveira
• Grantee: Natália Nunes Patucci
• Host Institution: Faculdade de Filosofia, Letras e Ciências Humanas (FFLCH). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

River captures are related to drainages rearrangements processes and occur when part of a course of a river channel moves to join another channel, causing a "Pirated drainage". The phenomenon affects the regional and local morphogenesis, as well as leave observable features in the landscape that allow evaluate the evolution of the process, such as: elbows of capture , dry valleys , beheading, ruptures in the longitudinal profiles, laps, gravel and mineralogical and morphoscopy gravels correlations. The research aims to investigate the different materials of soil formation of the dry valleys of the Guaratuba River (region between the rivers drainages of Guaratuba and Claro through absolute dating using Optically Stimulated Luminescence method (OSL) and radioactive isotopes (14C) in order to assign specific periods of landscape evolution, the origin of these features. Macromorphological, granulometric, morphoscopic and mineralogical aspects of the Dry Valleys coverage material will be searched, as well as the ages of the same shall be verified through absolute dating through (OSL) and (14C). Finally, additional statistical analyses, specifically multivariate and trends, will be applied in the results to analyze the main components (PCA) results. The systemic environmental assessment in conjunction with the use of the proposed methods will develop a pedological/ sedimentological study approaches, that relate the genesis of surface coverage of dry valleys, its chronology and spatial distribution to the process of river piracy.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SILVA, CARLOS BATISTA; SILVA, MARIA ELISA SIQUEIRA; AMBRIZZI, TERCIO; PATUCCI, NATALIA NUNES; LIMA, BRUNA SIMOES; CORREA, WESLEY CAMPOS. Spatial distribution of spectral SST oscillations over the equatorial pacific in the period 1888-2014. INTERNATIONAL JOURNAL OF CLIMATOLOGY, v. 41, n. 7, p. 3841-3864, JUN 15 2021. (16/06654-0, 14/50848-9, 17/09308-9, 17/09659-6)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

PATUCCI, Natália Nunes. Paleoenvironmental indicators for evaluation of stream captures in wet tropical. 2019. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Filosofia, Letras e Ciências Humanas (FFLCH/SBD) São Paulo.