Study on the variability of extreme rain events based on geochemistry high resolution analysis (d18O e d13C and trace elements) in speleothems

• Grant number: 19/02791-1
• Support Opportunities: Scholarships in Brazil - Master
• Start date: August 01, 2019
• End date: November 04, 2020
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Agreement: NSF and NSF's Partnership for International Research and Education (PIRE)
• Principal Investigator: Francisco William da Cruz Junior
• Grantee: Julio Cauhy Rodrigues
• Host Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 17/50085-3 - PIRE: climate research education in the Americas using tree-ring speleothem examples (PIRE-CREATE), AP.TEM
• Associated scholarship(s): 19/23364-4 - Reconstruction of the extreme precipitation events variability based on high-resolution analyses (´18 O, ´13 C and trace elements) in speleothems from Lage Branca and Malfazido cave in Southeast of Brazil, BE.EP.MS

Abstract

Extreme precipitation events represent the greatest source of risk associated with interannual variability in tropical climate regions and have been increasingly frequent and intense in modern times. In Brazil, about 74% of deaths related to natural disasters are associated with extreme rain events. In view of the recent hydroclimatic changes in South America, it is necessary to understand how the variability in climatic conditions interferes with the frequency and magnitude of these events. In this context, it is proposed in this research project the reconstitution of the frequency of extreme precipitation events based on high resolution geochemical records of trace elements in the speleothems of the Laje Branca grove (São Paulo State). The project aims to understand better how the frequency and magnitude of these events relate to climatic events of global expression. (AU)