| Volumes Contents of Volume 22 |
www.adv-geosci.net/22/27/2009/
doi:10.5194/adgeo-22-27-2009
© Author(s) 2009. This work is distributed
under the Creative Commons Attribution 3.0 License.
Environmental records from temperate glacier ice on Nevado Coropuna saddle, southern Peru
1Institut de Recherche pour le Développement (IRD), Laboratoire Hydrosciences, UMR 5569, Montpellier, France
2Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE), UMR 5183, Saint Martin d'Hères, France
3IRD, Instituto de Hidráulica e Hidrología, Calle 30 Cotacota, La Paz, Bolivia
4IRD, Institut des Sciences de l'Evolution, UMR 5554, Montpellier, France
5Climate and Environmental Physics, Physics Institute, University of Bern, Switzerland
Abstract. We investigated past climate variability and the zonal short and long-range transport of air masses in tropical South America using chemical, isotopic and palynological signals from a 42 m-long ice core recovered in 2003 from the saddle of the Nevado Coropuna, southern Peru (72°39´ W; 15°32´ S; 6080 m a.s.l.). We found that precipitation at this site depends mainly on the easterly circulation of air masses originated from the tropical Atlantic Ocean. Nevertheless, sporadic Pacific air masses arrivals, and strong cold waves coming from southern South America reach this altitude site. In spite of post-depositional effects, we were able to identify two strong ENSO (El Niño-Southern Oscillation) event signatures (1982–1983 and 1992) and the eruptive activity of the nearby Sabancaya volcano (1994).
Full Article in PDF (PDF, 693 KB)
Citation: Herreros, J., Moreno, I., Taupin, J.-D., Ginot, P., Patris, N., De Angelis, M., Ledru, M.-P., Delachaux, F., and Schotterer, U.: Environmental records from temperate glacier ice on Nevado Coropuna saddle, southern Peru, Adv. Geosci., 22, 27-34, doi:10.5194/adgeo-22-27-2009, 2009. Bibtex EndNote Reference Manager XML
