STABLE ISOTOPES (d2H and d18O): UNVEILING THE ORIGINS OF SURFACE WATER IN SÃO PAULO STATE WATERSHEDS

• Grant number: 17/13576-9
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: December 01, 2017
• End date: November 30, 2020
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Didier Gastmans
• Grantee: Lucas Vituri Santarosa
• Host Institution: Centro de Estudos Ambientais (CEA). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil

Abstract

Stable hydrogen and oxygen isotopes of (1H, 2H, 16O e 18O) are important tools in understanding the movement of water along the hydrological cycle. In favorable conditions, knowledge of the isotopic composition of the main water sources (precipitation and groundwater) can be used for quantify the spatial and temporal variations of the contributions these sources in the stream flow, allowing the understanding the regional hydrological system. Based on these premises, the present project aims to study the isotopic composition variation in the watersheds of the Water Resources Management Units (WRMU) Piracicaba/Capivari/Jundiaí (WRMU 5) e Tietê/Jacaré (WRMU 13) for the understanding of factors directly related to hydrologic dynamic in the Sao Paulo State. The area presents great environmental representativeness with aquifers of diversified characteristics directly influencing the importance of the contribution base stream of the studied rivers. As well as the characteristics of the relief and the spatial variation of the precipitation that can influence the isotopic composition. The study presents a methodology little applied the local environmental characteristics to study surface water resources using stable isotopes. The proposal represents an important instrument for the management water resources, providing the understanding of the interaction between the components of the hydrological cycle to delineate actions outline actions that protect the source and allow to conserve strategic water reserves in the current context of water scarcity.

Scientific publications

(6)

(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)

SANTAROSA, LUCAS VITURI; GASTMANS, DIDIER; GILMORE, TROY E.; BOLL, JAN; BETANCUR, SEBASTIAN BALBIN; GONCALVES, VITOR FIDELIS MONTEIRO. Baseflow and water resilience variability in two water management units in southeastern Brazil. INTERNATIONAL JOURNAL OF RIVER BASIN MANAGEMENT, v. N/A, p. 14-pg., 2022-01-14. (17/13576-9, 18/06666-4)

SANTAROSA, LUCAS VITURI; GASTMANS, DIDIER; SITOLINI, TATIANA PENTEADO; KIRCHHEIM, ROBERTO EDUARDO; BETANCUR, SEBASTIAN BALBIN; DIAS DE OLIVEIRA, MARCELO E.; VIEGAS CAMPOS, JOSE CLAUDIO; MANZIONE, RODRIGO LILLA. Assessment of groundwater recharge along the Guarani aquifer system outcrop zone in SAo Paulo State (Brazil): an important tool towards integrated management. ENVIRONMENTAL EARTH SCIENCES, v. 80, n. 3, JAN 27 2021. (17/13576-9, 18/06666-4)

SANTAROSA, LUCAS VITURI; GASTMANS, DIDIER; QUAGGIO, CAROLINA STAGER. Stable isotope modeling of the groundwater discharge in complex watersheds of the state of Sao Paulo, Brazil. Journal of South American Earth Sciences, v. 120, p. 11-pg., 2022-10-18. (18/06666-4, 17/13576-9)

SANTAROSA, LUCAS VITURI; GASTMANS, DIDIER; SANCHEZ-MURILLO, RICARDO; SANTOS, VINICIUS DOS; BATISTA, LUDMILA VIANNA; BETANCUR, SEBASTIAN BALBIN. Stable isotopes reveal groundwater to river connectivity in a mesoscale subtropical watershed. ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES, JAN 2021. (18/06666-4, 17/13576-9, 16/18735-5)

SANTAROSA, LUCAS VITURI; GASTMANS, DIDIER; SANCHEZ-MURILLO, RICARDO; SANTOS, VINICIUS DOS; BATISTA, LUDMILA VIANNA; BETANCUR, SEBASTIAN BALBIN. Stable isotopes reveal groundwater to river connectivity in a mesoscale subtropical watershed. ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES, v. 57, n. 3, p. 236-253, MAY 4 2021. (17/13576-9, 18/06666-4, 16/18735-5)

LANCAS, VANDERLEI GOMES; SANTAROSA, LUCAS VITURI; GARPELLI, LIA NOGUEIRA; BORMA, LAURA DE SIMONE; QUAGGIO, CAROLINA STAGER; DE SOUZA MARTINS, VERIDIANA TEIXEIRA; GASTMANS, DIDIER. Assessment of the changes in contributions from water sources to streamflow induced by urbanization in a small-sized catchment in Southeastern Brazil using the dual stable isotopes of water (O-18 and H-2). ENVIRONMENTAL MONITORING AND ASSESSMENT, v. 194, n. 5, p. 15-pg., 2022-05-01. (18/06666-4, 17/13576-9)

Academic Publications

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

SANTAROSA, Lucas Vituri. Anthropogenic and climatic impacts on hydrological processes: a multiple approach on the role of groundwater in complex watersheds in the state of São Paulo. 2020. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Instituto de Geociências e Ciências Exatas. Rio Claro Rio Claro.