Isotope ratios, IRD and planktonic foraminifera content during marine isotope stage 5 of sediment cores MD99-2303, MD99-2304 and MD95-2010 ...
Variable climatic and oceanographic conditions characterized the last interglacial at high northern latitudes, probably related to changes in the strength of the Atlantic Meridional Overturning Circulation (AMOC). The magnitudes of these changes are comparable to the Holocene variability, and were t...
| Main Authors: | , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
PANGAEA
2014
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.840727 https://doi.pangaea.de/10.1594/PANGAEA.840727 |
| Summary: | Variable climatic and oceanographic conditions characterized the last interglacial at high northern latitudes, probably related to changes in the strength of the Atlantic Meridional Overturning Circulation (AMOC). The magnitudes of these changes are comparable to the Holocene variability, and were thus significantly subdued compared to glacial climate changes. A thermal optimum occurred during the early part of the interglacial, followed by a period of reduced Atlantic inflow to the northernmost Nordic Seas. Subsequently, a new period with increased strength of the AMOC occurred. Significant amounts of Ice-Rafted Debris (IRD) were deposited in the northernmost Nordic Seas before any major change of the global ice volume. This implies an early onset of local ice sheet growth, probably the result of enhanced inflow of Atlantic water to the northernmost Nordic Seas contemporary with a Northern Hemisphere summer insolation minimum. Contrasting sea-land conditions provided large moisture fluxes towards land, ... : Supplement to: Risebrobakken, Bjørg; Dokken, Trond; Jansen, Eystein (2005): Extent and variability of the Meridional Atlantic Circulation in the Eastern Nordic Seas during Marine Isotope Stage 5 and its influence on the inception of the last Glacial. Geophysical Monograph Series, 158, 323-339 ... |
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