Journal article

Dust deposition tracks late-Holocene shifts in monsoon activity and the increasing role of human disturbance in the Puna-Altiplano, northwest Argentina

James Hooper, Samuel K Marx, Jan-Hendrik May, Liliana C Lupo, Julio J Kulemeyer, Elizabeth de los A Pereira, Osamu Seki, Henk Heijnis, David Child, Patricia Gadd, Atun Zawadzki

The Holocene | SAGE PUBLICATIONS LTD | Published : 2020

Abstract

The Puna-Altiplano plateau represents a regionally significant dust source, which is critically located at the nexus between the tropical and sub-polar synoptic systems that dominate the South American climate. Dust emissions in this region would therefore be expected to be sensitive to changes in these systems, in particular the strength and position of the South American Summer Monsoon (SASM). Here, we present a late-Holocene multi-proxy study where changes in dust flux, reconstructed from a high-altitude peat mire, are examined in light of climate variability and human impacts. Results show that for most the 4300 cal. yr BP record, dust flux sensitively tracked changes in SASM activity. P..

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Funding Acknowledgements

The author(s) received the following financial support for the research, authorship, and/or publication of this article: J. Hooper would like to thank the Australian Institute of Nuclear Science and Engineering (AINSE) for funding support. Al financiamiento de ANPCyT, PICT 2015 No 3047.