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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Stable isotopes reveal groundwater to river connectivity in a mesoscale subtropical watershed

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Author(s):
Santarosa, Lucas Vituri [1] ; Gastmans, Didier [1] ; Sanchez-Murillo, Ricardo [2, 3] ; Santos, Vinicius dos [1] ; Batista, Ludmila Vianna [1] ; Betancur, Sebastian Balbin [1]
Total Authors: 6
Affiliation:
[1] Sao Paulo State Univ UNESP, Environm Studies Ctr, Rio Claro - Brazil
[2] Univ Nacl, Stable Isotopes Res Grp, Heredia - Costa Rica
[3] Univ Nacl, Water Resources Management Lab, Heredia - Costa Rica
Total Affiliations: 3
Document type: Journal article
Source: ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES; v. 57, n. 3, p. 236-253, MAY 4 2021.
Web of Science Citations: 0
Abstract

The Corumbatai River basin (Sao Paulo, Brazil) has a critical situation regarding water availability due to the intensive use to support agriculture and urbanization, requiring scientific information to face water demand. The aim of this study is to present a hydrological characterization based on the analysis of seasonal isotope variations (rainfall, groundwater, and surface water) and hydrometric data. Results indicate that baseflow contribution varies from 50 % to 70 % of the total flow, and water isotopic composition denotes a seasonal regime marked by the mixing of surface and groundwater in the wet period and groundwater discharge during the dry season. The results presented indicated the strong seasonal connection between atmospheric inputs and water movement across the basin, which poses an urgent need to diversify monitoring methods and create feasible regional and political regulations to control the effects on basin water resilience in the face of climate change and growing demand. (AU)

FAPESP's process: 17/13576-9 - STABLE ISOTOPES (d2H and d18O): UNVEILING THE ORIGINS OF SURFACE WATER IN SÃO PAULO STATE WATERSHEDS
Grantee:Lucas Vituri Santarosa
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 18/06666-4 - Isotopic tracers revealing the water movement in watersheds of the São Paulo State
Grantee:Didier Gastmans
Support Opportunities: Regular Research Grants
FAPESP's process: 16/18735-5 - Isotopic composition of precipitation and its relationship with climatic variability in the southern central portion of São Paulo State (BR)
Grantee:Vinícius dos Santos
Support Opportunities: Scholarships in Brazil - Master