Proyectos

Nonsmooth dynamical system involving regular structures

Fondo de Innovación para la Competitividad - FIC2018 - 6ta región. Gobierno Regional. Proyecto titulado: Laboratorio Biominero para la Región de O’Higgins. Institución patrocinante: Universidad de O’Higgins. Marzo 2019-Diciembre 2020.

Fondo de Innovación para la Competitividad - FIC2018 - 6ta región. Gobierno Regional. Proyecto titulado: Laboratorio Biominero para la Región de O’Higgins. Institución patrocinante: Universidad de O’Higgins. Marzo 2019-Diciembre 2020.

The aim of this proposal is to develop a high-resolution (interdecadal) quantitative reconstruction of SWW intensity variability over SSA during the Late Pleistocene-Holocene, based on the analysis of aeolian lithic particles deposited in a closed-basin lake. With this reconstruction we expect to answer this question: Are the different proxies responding synchronously to the SWW changes? if not, what other factors may be influencing the record? What is the maximum time delay between proxies?, and what is the resolution necessary to see this lag? Addressing this issue in the study of the dynamics of SWW during the Late Pleistocene-Holocene will contribute to reconcile conflicting interpretations of SWW based on different climate proxies in Patagonia. For this, this quantitative reconstruction will be accompanied by the reconstruction of precipitation changes– associated to SWW dynamics – using indirect proxies: pollen analyses in the same lacustrine sediments,and the study of a fjord sedimentary record to evaluate changes in sediment runoff. The comparison of direct and indirect proxies of changes in SWW activity from two different locations in the study area will permit to evaluate 1) local versus regional changes in environmental conditions, and 2) timing and lag between the different proxies and other climate records of the region (for example, Antarctic climate records). Our results will provide important insights into paleoclimatic dynamics of SSA by improving previous qualitative reconstructions for this belt and helping to decipher the magnitude and timing of SWW past intensity changes. This will support current efforts to better understand future climate projections in the region and adequately assess mitigation strategies against its effects.