Land–sea coupling of early Pleistocene glacial cycles in the southern North Sea exhibit dominant Northern Hemisphere forcing:
We assess the disputed phase relations between forcing and climatic response in the early Pleistocene with a spliced Gelasian -2.6-1.8 Ma) multi-proxy record from the southern North Sea basin. The cored sections couple climate evolution on both land and sea during the intensification of Northern Hem...
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fttno:oai:tudelft.nl:uuid:f49750d7-b404-4660-b137-b3c637b77e54 2023-05-15T15:18:49+02:00 Land–sea coupling of early Pleistocene glacial cycles in the southern North Sea exhibit dominant Northern Hemisphere forcing: Donders, T.H. Helmond, N.A.G.M. Verreussel, R.M.C.H. Munsterman, D.K. Veen, J.H. ten Speijer, R.P. Weijers, J.W.H. Sangiorgi, F. Peterse, F. Reichart, G.J. Sinninghe Damste, J.S. Lourens, L. Kuhlmann, G. Brinkhuis, H. 2018-01-01 http://resolver.tudelft.nl/uuid:f49750d7-b404-4660-b137-b3c637b77e54 en eng uuid:f49750d7-b404-4660-b137-b3c637b77e54 788174 http://resolver.tudelft.nl/uuid:f49750d7-b404-4660-b137-b3c637b77e54 Climate of the Past, 14, 1-15 Geosciences Geological Survey Netherlands 2015 Energy article 2018 fttno 2022-04-10T16:53:46Z We assess the disputed phase relations between forcing and climatic response in the early Pleistocene with a spliced Gelasian -2.6-1.8 Ma) multi-proxy record from the southern North Sea basin. The cored sections couple climate evolution on both land and sea during the intensification of Northern Hemisphere glaciation (NHG) in NW Europe, providing the first well-constrained stratigraphic sequence of the classic terrestrial Praetiglian stage. Terrestrial signals were derived from the Eridanos paleoriver, a major fluvial system that contributed a large amount of freshwater to the northeast Atlantic. Due to its latitudinal position, the Eridanos catchment was likely affected by early Pleistocene NHG, leading to intermittent shutdown and reactivation of river flow and sediment transport. Here we apply organic geochemistry, palynology, carbonate isotope geochemistry, and seismostratigraphy to document both vegetation changes in the Eridanos catchment and regional surface water conditions and relate them to early Pleistocene glacial–interglacial cycles and relative sea level changes. Paleomagnetic and palynological data provide a solid integrated timeframe that ties the obliquity cycles, expressed in the borehole geophysical logs, to Marine Isotope Stages (MIS) 103 to 92, independently confirmed by a local benthic oxygen isotope record. Marine and terrestrial palynological and organic geochemical records provide high-resolution reconstructions of relative terrestrial and sea surface temperature (TT and SST), vegetation, relative sea level, and coastal influence. During the prominent cold stages MIS 98 and 96, as well as 94, the record indicates increased non-arboreal vegetation, low SST and TT, and low relative sea level. During the warm stages MIS 99, 97, and 95 we infer increased stratification of the water column together with a higher percentage of arboreal vegetation, high SST, and relative sea level maxima. The early Pleistocene distinct warm–cold alterations are synchronous between land and sea, but lead the relative sea level change by 3000–8000 years. The record provides evidence for a dominantly Northern Hemisphere-driven cooling that leads the glacial buildup and varies on the obliquity timescale. Southward migration of Arctic surface water masses during glacials, indicated by cool-water dinoflagellate cyst assemblages, is furthermore relevant for the discussion on the relation between the intensity of the Atlantic meridional overturning circulation and ice sheet growth. Article in Journal/Newspaper Arctic Ice Sheet Northeast Atlantic TU Delft: Institutional Repository (Delft University of Technology) Arctic |
institution |
Open Polar |
collection |
TU Delft: Institutional Repository (Delft University of Technology) |
op_collection_id |
fttno |
language |
English |
topic |
Geosciences Geological Survey Netherlands 2015 Energy |
spellingShingle |
Geosciences Geological Survey Netherlands 2015 Energy Donders, T.H. Helmond, N.A.G.M. Verreussel, R.M.C.H. Munsterman, D.K. Veen, J.H. ten Speijer, R.P. Weijers, J.W.H. Sangiorgi, F. Peterse, F. Reichart, G.J. Sinninghe Damste, J.S. Lourens, L. Kuhlmann, G. Brinkhuis, H. Land–sea coupling of early Pleistocene glacial cycles in the southern North Sea exhibit dominant Northern Hemisphere forcing: |
topic_facet |
Geosciences Geological Survey Netherlands 2015 Energy |
description |
We assess the disputed phase relations between forcing and climatic response in the early Pleistocene with a spliced Gelasian -2.6-1.8 Ma) multi-proxy record from the southern North Sea basin. The cored sections couple climate evolution on both land and sea during the intensification of Northern Hemisphere glaciation (NHG) in NW Europe, providing the first well-constrained stratigraphic sequence of the classic terrestrial Praetiglian stage. Terrestrial signals were derived from the Eridanos paleoriver, a major fluvial system that contributed a large amount of freshwater to the northeast Atlantic. Due to its latitudinal position, the Eridanos catchment was likely affected by early Pleistocene NHG, leading to intermittent shutdown and reactivation of river flow and sediment transport. Here we apply organic geochemistry, palynology, carbonate isotope geochemistry, and seismostratigraphy to document both vegetation changes in the Eridanos catchment and regional surface water conditions and relate them to early Pleistocene glacial–interglacial cycles and relative sea level changes. Paleomagnetic and palynological data provide a solid integrated timeframe that ties the obliquity cycles, expressed in the borehole geophysical logs, to Marine Isotope Stages (MIS) 103 to 92, independently confirmed by a local benthic oxygen isotope record. Marine and terrestrial palynological and organic geochemical records provide high-resolution reconstructions of relative terrestrial and sea surface temperature (TT and SST), vegetation, relative sea level, and coastal influence. During the prominent cold stages MIS 98 and 96, as well as 94, the record indicates increased non-arboreal vegetation, low SST and TT, and low relative sea level. During the warm stages MIS 99, 97, and 95 we infer increased stratification of the water column together with a higher percentage of arboreal vegetation, high SST, and relative sea level maxima. The early Pleistocene distinct warm–cold alterations are synchronous between land and sea, but lead the relative sea level change by 3000–8000 years. The record provides evidence for a dominantly Northern Hemisphere-driven cooling that leads the glacial buildup and varies on the obliquity timescale. Southward migration of Arctic surface water masses during glacials, indicated by cool-water dinoflagellate cyst assemblages, is furthermore relevant for the discussion on the relation between the intensity of the Atlantic meridional overturning circulation and ice sheet growth. |
format |
Article in Journal/Newspaper |
author |
Donders, T.H. Helmond, N.A.G.M. Verreussel, R.M.C.H. Munsterman, D.K. Veen, J.H. ten Speijer, R.P. Weijers, J.W.H. Sangiorgi, F. Peterse, F. Reichart, G.J. Sinninghe Damste, J.S. Lourens, L. Kuhlmann, G. Brinkhuis, H. |
author_facet |
Donders, T.H. Helmond, N.A.G.M. Verreussel, R.M.C.H. Munsterman, D.K. Veen, J.H. ten Speijer, R.P. Weijers, J.W.H. Sangiorgi, F. Peterse, F. Reichart, G.J. Sinninghe Damste, J.S. Lourens, L. Kuhlmann, G. Brinkhuis, H. |
author_sort |
Donders, T.H. |
title |
Land–sea coupling of early Pleistocene glacial cycles in the southern North Sea exhibit dominant Northern Hemisphere forcing: |
title_short |
Land–sea coupling of early Pleistocene glacial cycles in the southern North Sea exhibit dominant Northern Hemisphere forcing: |
title_full |
Land–sea coupling of early Pleistocene glacial cycles in the southern North Sea exhibit dominant Northern Hemisphere forcing: |
title_fullStr |
Land–sea coupling of early Pleistocene glacial cycles in the southern North Sea exhibit dominant Northern Hemisphere forcing: |
title_full_unstemmed |
Land–sea coupling of early Pleistocene glacial cycles in the southern North Sea exhibit dominant Northern Hemisphere forcing: |
title_sort |
land–sea coupling of early pleistocene glacial cycles in the southern north sea exhibit dominant northern hemisphere forcing: |
publishDate |
2018 |
url |
http://resolver.tudelft.nl/uuid:f49750d7-b404-4660-b137-b3c637b77e54 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice Sheet Northeast Atlantic |
genre_facet |
Arctic Ice Sheet Northeast Atlantic |
op_source |
Climate of the Past, 14, 1-15 |
op_relation |
uuid:f49750d7-b404-4660-b137-b3c637b77e54 788174 http://resolver.tudelft.nl/uuid:f49750d7-b404-4660-b137-b3c637b77e54 |
_version_ |
1766348997851611136 |