Sediment-color record from the Northeast Atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years
A 500,000-yr-long deep-sea sediment-color record from the Northeast Atlantic was investigated to reconstruct the evolution of late Pleistocene climate variability on millennial time scales. Variations of the red–green color intensity are probably caused by climatically induced changes in the ice-raf...
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Online Access: | https://oceanrep.geomar.de/id/eprint/1002/ https://oceanrep.geomar.de/id/eprint/1002/1/M%C3%BCller-Lupp.pdf https://doi.org/10.1006/qres.2001.2289 |
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ftoceanrep:oai:oceanrep.geomar.de:1002 2023-05-15T17:41:09+02:00 Sediment-color record from the Northeast Atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years Helmke, Jan Schulz, M. Bauch, Henning 2002 text https://oceanrep.geomar.de/id/eprint/1002/ https://oceanrep.geomar.de/id/eprint/1002/1/M%C3%BCller-Lupp.pdf https://doi.org/10.1006/qres.2001.2289 en eng Elsevier https://oceanrep.geomar.de/id/eprint/1002/1/M%C3%BCller-Lupp.pdf Helmke, J., Schulz, M. and Bauch, H. (2002) Sediment-color record from the Northeast Atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years. Quaternary Research, 57 . pp. 49-57. DOI 10.1006/qres.2001.2289 <https://doi.org/10.1006/qres.2001.2289>. doi:10.1006/qres.2001.2289 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2002 ftoceanrep https://doi.org/10.1006/qres.2001.2289 2023-04-07T14:43:05Z A 500,000-yr-long deep-sea sediment-color record from the Northeast Atlantic was investigated to reconstruct the evolution of late Pleistocene climate variability on millennial time scales. Variations of the red–green color intensity are probably caused by climatically induced changes in the ice-rafted input of red-colored iron-bearing terrigenous material to the core site. The resolution of the age model impedes the detection of distinct spectral features at sub-Milankovitch periodicities. Hence, millennial-scale climate variability is quantified as time-dependent variance of the high-pass filtered color time series. The course of the estimated variance shows distinct patterns, which can be linked to continental ice mass. During the past 500,000 yr, large-amplitude millennial-scale climate variability occurs only if continental ice mass exceeds a threshold level, equivalent to sea level at approximately 40% of the lowering during the last glacial maximum. Article in Journal/Newspaper Northeast Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Quaternary Research 57 1 49 57 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
A 500,000-yr-long deep-sea sediment-color record from the Northeast Atlantic was investigated to reconstruct the evolution of late Pleistocene climate variability on millennial time scales. Variations of the red–green color intensity are probably caused by climatically induced changes in the ice-rafted input of red-colored iron-bearing terrigenous material to the core site. The resolution of the age model impedes the detection of distinct spectral features at sub-Milankovitch periodicities. Hence, millennial-scale climate variability is quantified as time-dependent variance of the high-pass filtered color time series. The course of the estimated variance shows distinct patterns, which can be linked to continental ice mass. During the past 500,000 yr, large-amplitude millennial-scale climate variability occurs only if continental ice mass exceeds a threshold level, equivalent to sea level at approximately 40% of the lowering during the last glacial maximum. |
format |
Article in Journal/Newspaper |
author |
Helmke, Jan Schulz, M. Bauch, Henning |
spellingShingle |
Helmke, Jan Schulz, M. Bauch, Henning Sediment-color record from the Northeast Atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years |
author_facet |
Helmke, Jan Schulz, M. Bauch, Henning |
author_sort |
Helmke, Jan |
title |
Sediment-color record from the Northeast Atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years |
title_short |
Sediment-color record from the Northeast Atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years |
title_full |
Sediment-color record from the Northeast Atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years |
title_fullStr |
Sediment-color record from the Northeast Atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years |
title_full_unstemmed |
Sediment-color record from the Northeast Atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years |
title_sort |
sediment-color record from the northeast atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years |
publisher |
Elsevier |
publishDate |
2002 |
url |
https://oceanrep.geomar.de/id/eprint/1002/ https://oceanrep.geomar.de/id/eprint/1002/1/M%C3%BCller-Lupp.pdf https://doi.org/10.1006/qres.2001.2289 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/1002/1/M%C3%BCller-Lupp.pdf Helmke, J., Schulz, M. and Bauch, H. (2002) Sediment-color record from the Northeast Atlantic reveals patterns of millennial-scale climate variability during the past 500,000 years. Quaternary Research, 57 . pp. 49-57. DOI 10.1006/qres.2001.2289 <https://doi.org/10.1006/qres.2001.2289>. doi:10.1006/qres.2001.2289 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1006/qres.2001.2289 |
container_title |
Quaternary Research |
container_volume |
57 |
container_issue |
1 |
container_start_page |
49 |
op_container_end_page |
57 |
_version_ |
1766142446265171968 |