| Grant number: | 12/01187-4 |
| Support Opportunities: | Regular Research Grants |
| Start date: | May 01, 2012 |
| End date: | April 30, 2014 |
| Field of knowledge: | Physical Sciences and Mathematics - Geosciences - Geology |
| Principal Investigator: | Ivo Karmann |
| Grantee: | Ivo Karmann |
| Host Institution: | Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil |
| City of the host institution: | São Paulo |
Abstract
The research proposed aims to set up a monitoring program for environmental parameters such as climate, hydrology and chemistry-isotopic composition of meteoric waters at cave sites in order to improve the confidence in the paleoclimatic and paleoenvironmental interpretations records from speleothem records. The study sites were previously selected based on the availability of well-dated speleothems that will provide high-resolution paleoclimate reconstructions of the rainfall distributions along the South Atlantic Convergence Zone, a major feature of South American Monsoon System.This study will make possible a precise evaluation of the "amount effect" in the isotope fractionation of rainfall water that percolates into the karstic system and also the primary control of climate and hydrology on chemistry and isotopic composition of drip waters forming modern speleothems. This research project is associated with ongoing studies of the precipitation variability in the South American Monsoon system on decadal to multicentannial timescales during the Holocene. (AU)
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