Sub-decadal- to decadal-scale climate cyclicity during the Holsteinian interglacial (MIS 11) evidenced in annually laminated sediments
- To unravel the short-term climate variability during Marine Isotope Stage (MIS) 11, which represents a close analogue to the Holocene with regard to orbital boundary conditions, we performed microfacies and time series analyses on a ~3200-yr-long record of annually laminated Holsteinian lake sediments from Dethlingen, northern Germany. These biogenic varves comprise two sub-layers: a light sub-layer, which is controlled by spring/summer diatom blooms, and a dark sub-layer consisting mainly of amorphous organic matter and fragmented diatom frustules deposited during autumn/winter. Time series analyses were performed on the thickness of the light and dark sub-layers. Signals exceeding the 95% and 99% confidence levels occur at periods that are near-identical to those known from modern instrumental data and Holocene palaeoclimatic records. Spectral peaks at periods of 90, 25, and 10.5 yr are likely associated with the 88-, 22- and 11-yr solar cycles, respectively. This variability is mainly expressed in the light sub-layer spectra, suggesting solar influence on the palaeoproductivity of the lake. Significant signals at periods between 3 and 5 yr and at ∼6 yr are strongest expressed in the dark sub-layer spectra and may reflect an influence of the El Niño-Southern Oscillation (ENSO) and the North Atlantic Oscillation (NAO) during autumn/winter. Our results suggest that solar forcing and ENSO/NAO-like variability influenced central European climate during MIS 11 similarly to the present interglacial, thus demonstrating the comparability of the two interglacial periods at sub-decadal to decadal timescales.
Author: | Andreas KoutsodendrisORCiDGND, Achim Brauer, Heiko Pälike, Ulrich C. Müller, Peter Dulski, André Lotter, Jörg ProssGND |
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URN: | urn:nbn:de:hebis:30:3-229895 |
DOI: | https://doi.org/10.5194/cp-7-987-2011 |
ISSN: | 1814-9332 |
Parent Title (German): | Climate of the past |
Publisher: | Copernicus Ges. |
Place of publication: | Katlenburg-Lindau |
Document Type: | Article |
Language: | English |
Year of Completion: | 2011 |
Date of first Publication: | 2011/10/20 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2011/10/25 |
Volume: | 7 |
Page Number: | 13 |
First Page: | 987 |
Last Page: | 999 |
Note: | © Author(s) 2011. This work is distributed under the Creative Commons Attribution 3.0 License. |
HeBIS-PPN: | 280641907 |
Institutes: | Geowissenschaften / Geographie / Geowissenschaften |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften |
Sammlungen: | Universitätspublikationen |
Licence (German): | Creative Commons - Namensnennung 3.0 |