Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

UP: Umweltphysik

UP 15: Poster: Atmosph
äre und Klima

UP 15.8: Poster

Dienstag, 14. März 2006, 14:00–16:00, C

Dated speleothems: archives of the paleoenvironment (DAPHNE) — •Augusto Mangini — Forschungsstelle Radiometrie, Heidelberger Akademie der Wissenschaften, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany

In Summer 2005 the Deutsche Forschungsgemeinschaft approved funding for the Forschergruppe 668 (DAPHNE). In this interdisciplinary research group several researchers and scientists from Heidelberg, Bochum, Innsbruck and Trento collaborate to study speleothems over a period of six years. The intention of DAPHNE is to understand the basic mechanisms which control speleothem growth and composition by the combined application of field and laboratory experiments. In particular, the impact of kinetic fractionation processes on the oxygen isotope signal will be quantified. The knowledge of these basic mechanisms will allow for the first time to obtain high resolution information about the intensity of past precipitation and temperature from stalagmites. Hereby, speleothems will advance to a precisely dated continental archive providing quantitative climate information. By the application to Late Quaternary speleothems we will reconstruct the temporal and spatial variability of precipitation and temperature on a supra-regional scale. These data will represent an important basis for prognostic climate modeling. DAPHNE Members: A. Mangini, D. Scholz, A. Schröder-Ritzrau, C. Spötl, M. Isenbeck-Schroeter, D. Polag, D. K. Richter, S. Niggemann, S. Frisia, R. Miorandi, W. Aeschbach-Hertig, T. Kluge, B. Kromer, J. Fohlmeister