Herreros J., Moreno I., Taupin Jean-Denis, Ginot Patrick, Patris Nicolas, De Angelis M., Ledru Marie-Pierre, Delachaux F., Schotterer U. (2009). Environmental records from temperate glacier ice on Nevado Coropuna saddle, southern Peru. In :
Fabian P. (ed.), Garreau R. (ed.), Schneider C. (ed.), Tilling R. (ed.). EGU Alexander von Humboldt conference : the Andes : challenge for geosciences. Advances in Geosciences, (22), 27-34.
Titre du document
Environmental records from temperate glacier ice on Nevado Coropuna saddle, southern Peru
Année de publication
2009
Auteurs
Herreros J., Moreno I., Taupin Jean-Denis, Ginot Patrick, Patris Nicolas, De Angelis M., Ledru Marie-Pierre, Delachaux F., Schotterer U.
In
Fabian P. (ed.), Garreau R. (ed.), Schneider C. (ed.), Tilling R. (ed.), EGU Alexander von Humboldt conference : the Andes : challenge for geosciences
Source
Advances in Geosciences, 2009,
(22), 27-34
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).
Plan de classement
Climatologie [021CLIMAT]
;
Régimes climatiques [062REGHYD02]
Descripteurs
PALEOCLIMAT ; GLACIER ; PALYNOLOGIE ; ANALYSE ISOTOPIQUE ; CIRCULATION ATMOSPHERIQUE ; INTERACTION OCEAN ATMOSPHERE ; PRECIPITATION ; EL NINO ; VOLCANISME ; GLACIOLOGIE
Description Géographique
ZONE TROPICALE ; ANDES ; PEROU
Localisation
Fonds IRD [F B010051636]
Identifiant IRD
fdi:010051636
