Stable isotopes applications for the assessment of the hydrological cycle process: precipitation and small catchments in São Paulo State, BR

• Grant number: 15/15749-2
• Support Opportunities: Regular Research Grants
• Start date: November 01, 2015
• End date: October 31, 2017
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Didier Gastmans
• Grantee: Didier Gastmans
• Host Institution: Centro de Estudos Ambientais (CEA). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil
• Associated researchers: Amauri Antonio Menegário ; Ricardo Sánchez-Murillo ; Rodrigo Lilla Manzione
• Associated research grant(s): 17/50038-5 - Application of isotopic tracers to determine water residence times in multi-scale water management, AP.R SPRINT

Abstract

Stable isotopes (´2H e ´18O) constitute an excellent tracer for water movement through the water cycle, and has been employed as auxiliary tolls to interpreting about climatic controls over precipitation, as well as to determine the origin of water in catchments. In tropical zones, the climatic key drivers over isotopic composition of the precipitation remains a controversial subject in the scientific community. Some researchers have proposed the influence of local process over precipitations while other researchers have proposed the importance of process in regional scale, as Rayleigh distillation. Stable isotopes also have been employed as complementary tolls to understand hydrological process in small catchments, improving the understanding of these mechanisms and processes, to estimate the Mean Transit Time (MTT), to identify the involved in the origin of water in streams, as well as to calibrate and/or validate hydrological models through the estimation of specific hydrological parameters. Based on the water isotopic transformations through hydrological cycle, this project has two main purpose: evaluate the isotopic variations in the precipitation in selected points along the São Paulo state, in order to understand the climatic controlling factors over the precipitation isotopic composition, contributing to improve the knowledge about the precipitation in tropical regions. The second objective is to determine the MTT in small catchments located at Rio Jacaré Pepira watershed, based on the isotopic variations groundwater and superficial water, contributing to quantify the water balance. (AU)

Scientific publications

(4)

(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)

BATISTA, LUDMILA VIANNA; GASTMANS, DIDIER; SANCHEZ-MURILLO, RICARDO; FARINHA, BARBARA SAETA; RODRIGUES DOS SANTOS, SARAH MARIA; KIANG, CHANG HUNG. Groundwater and surface water connectivity within the recharge area of Guarani aquifer system during El Nino 2014-2016. Hydrological Processes, v. 32, n. 16, p. 2483-2495, JUL 30 2018. (15/15749-2)

DOS SANTOS, VINICIUS; GASTMANS, DIDIER; SANCHEZ-MURILLO, RICARDO; GOZZO, LUIZ FELIPPE; BATISTA, LUDMILA VIANNA; MANZIONE, RODRIGO LILLA; MARTINEZ, JORGE. Regional atmospheric dynamics govern interannual and seasonal stable isotope composition in southeastern Brazil. Journal of Hydrology, v. 579, DEC 2019. (15/15749-2, 18/06666-4, 16/18735-5)

MUNKSGAARD, NIELS C.; KURITA, NAOYUKI; SANCHEZ-MURILLO, RICARDO; AHMED, NASIR; ARAGUAS, LUIS; BALACHEW, DAGNACHEW L.; BIRD, MICHAEL I.; CHAKRABORTY, SUPRIYO; CHINH, NGUYEN KIEN; COBB, KIM M.; et al. Data Descriptor: Daily observations of stable isotope ratios of rainfall in the tropics. SCIENTIFIC REPORTS, v. 9, OCT 8 2019. (15/15749-2)

DOS SANTOS, VINICIUS; DE OLIVEIRA, MARCELO DIAS; BOLL, JAN; SANCHEZ-MURILLO, RICARDO; MENEGARIO, AMAURI ANTONIO; GOZZO, LUIZ FELIPPE; GASTMANS, DIDIER. Isotopic composition of precipitation during strong El Nino-Southern Oscillation events in the Southeast Region of Brazil. Hydrological Processes, v. 33, n. 4, p. 647-660, FEB 15 2019. (15/15749-2, 16/18735-5)