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Solar Output Controls Periodicity in Lake Productivity and Wetness at Southernmost South America

Titelangaben

Pérez-Rodríguez, Marta ; Gilfedder, Ben ; Hermanns, Yvonne-Marie ; Biester, Harald:
Solar Output Controls Periodicity in Lake Productivity and Wetness at Southernmost South America.
In: Scientific Reports. Bd. 6 (November 2016) . - No. 37521.
ISSN 2045-2322
DOI: https://doi.org/10.1038/srep37521

Abstract

Cyclic changes in total solar irradiance (TSI) during the Holocene are known to affect globalclimatic conditions and cause cyclic climatic oscillations, e.g., Bond events and related changes ofenvironmental conditions. However, the processes how changes in TSI affect climate and environmentof the Southern Hemisphere, especially in southernmost South America, a key area for the globalclimate, are still poorly resolved. Here we show that highly sensitive proxies for aquatic productivityderived from sediments of a lake near the Chilean South Atlantic coast (53 °S) strongly match thecyclic changes in TSI throughout the Holocene. Intra-lake productivity variations show a periodicity of~200–240 years coherent with the time series of TSI-controlled cosmogenic nuclide 10Be production. Inaddition TSI dependent periodicity of Bond events (~1500 years) appear to control wetness at the LHsite indicated by mineral matter erosion from the catchment to the lake assumingly through shifts ofthe position of the southern westerly wind belt. Thus, both intra-lake productivity and wetness at thesouthernmost South America are directly or indirectly controlled by TSI.

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: BAYCEER138628
Institutionen der Universität: Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Hydrologie
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
Eingestellt am: 18 Jan 2018 09:10
Letzte Änderung: 18 Jan 2018 09:10
URI: https://eref.uni-bayreuth.de/id/eprint/41388