Details zur Publikation

Kategorie Textpublikation
Referenztyp Buchkapitel
Titel (primär) Natural environmental hazards reflected in high-altitude Patagonian lake sediments (Lake Caviahue, Argentina)
Titel (sekundär) Advances in Geosciences, Volume 12: Ocean Science (OS)
Autor Müller, A.; Scharf, B.; von Tümpling, W. ORCID logo ; Pirrung, M.
Herausgeber Gan, J.
Erscheinungsjahr 2009
Department FLOEK
Seite von 161
Seite bis 178
Sprache englisch
Abstract Two 6-m long sediment cores drilled in tire two basins of Lake Caviahue give new evidence of the impact of natural hazards such as ash fallouts linked to nearby volcanic eruptions in the ecologically sensitive environment of the high-altitude region of the Argentinan Patagonian Andes. The two cores show distinct signals of changes in autochthonous productivity and terrigenous input into the lake from ash fallout as well as from river load and shore erosion. Multiproxy records of the sediments indicate whether these changes can be related to volcanic activity. High values of magnetic susceptibility in the cores reflect periods of basaltic ash fallouts during eruptions of the nearby Copahue Volcano. The southern basin is located in the prevalent direction of ash fallouts and has been affected by these volcanic inputs more intensely than the northern basin of the lake. In contrast, sedimentation and authochthonous productivity in the northern basin are strongly affected by fluvial inputs such as suspended river load and acidic stream waters.

dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=12896
Müller, A., Scharf, B., von Tümpling, W., Pirrung, M. (2009):
Natural environmental hazards reflected in high-altitude Patagonian lake sediments (Lake Caviahue, Argentina)
In: Gan, J. (ed.)
Advances in Geosciences, Volume 12: Ocean Science (OS)
World Scientific, Singapore, p. 161 - 178