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| Titel |
Environmental records from temperate glacier ice on Nevado Coropuna saddle, southern Peru |
| VerfasserIn |
J. Herreros, I. Moreno, J.-D. Taupin, P. Ginot, N. Patris, M. Angelis, M.-P. Ledru, F. Delachaux, U. Schotterer |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 4th EGU Alexander von Humboldt Conference "The Andes: Challenge for Geosciences" ; Nr. 22 (2009-10-13), S.27-34 |
| Datensatznummer |
250014725
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| Publikation (Nr.) |
 copernicus.org/adgeo-22-27-2009.pdf |
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| Zusammenfassung |
| 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). |
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