Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr
We used piston cores recovered in the western Bering Sea to reconstruct millennial-scale changes in marine productivity and terrigenous matter supply over the past similar to 180 kyr. Based on a geochemical multi-proxy approach, our results indicate closely interacting processes controlling marine p...
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Copernicus Publications (EGU)
2013
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Online Access: | https://oceanrep.geomar.de/id/eprint/21991/ https://oceanrep.geomar.de/id/eprint/21991/1/cp-9-1345-2013.pdf https://doi.org/10.5194/cp-9-1345-2013 |
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ftoceanrep:oai:oceanrep.geomar.de:21991 2023-05-15T15:43:13+02:00 Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr Riethdorf, Jan-Rainer Nürnberg, Dirk Max, L. Tiedemann, R. Gorbarenko, S. A. Malakhov, M. I. 2013 text https://oceanrep.geomar.de/id/eprint/21991/ https://oceanrep.geomar.de/id/eprint/21991/1/cp-9-1345-2013.pdf https://doi.org/10.5194/cp-9-1345-2013 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/21991/1/cp-9-1345-2013.pdf Riethdorf, J. R., Nürnberg, D. , Max, L., Tiedemann, R., Gorbarenko, S. A. and Malakhov, M. I. (2013) Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr. Open Access Climate of the Past, 9 (3). pp. 1345-1373. DOI 10.5194/cp-9-1345-2013 <https://doi.org/10.5194/cp-9-1345-2013>. doi:10.5194/cp-9-1345-2013 cc_by info:eu-repo/semantics/openAccess Article PeerReviewed 2013 ftoceanrep https://doi.org/10.5194/cp-9-1345-2013 2023-04-07T15:10:22Z We used piston cores recovered in the western Bering Sea to reconstruct millennial-scale changes in marine productivity and terrigenous matter supply over the past similar to 180 kyr. Based on a geochemical multi-proxy approach, our results indicate closely interacting processes controlling marine productivity and terrigenous matter supply comparable to the situation in the Okhotsk Sea. Overall, terrigenous inputs were high, whereas export production was low. Minor increases in marine productivity occurred during intervals of Marine Isotope Stage 5 and interstadials, but pronounced maxima were recorded during interglacials and Termination I. The terrigenous material is suggested to be derived from continental sources on the eastern Bering Sea shelf and to be subsequently transported via sea ice, which is likely to drive changes in surface productivity, terrigenous inputs, and upper-ocean stratification. From our results we propose glacial, deglacial, and interglacial scenarios for environmental change in the Bering Sea. These changes seem to be primarily controlled by insolation and sea-level forcing which affect the strength of atmospheric pressure systems and sea-ice growth. The opening history of the Bering Strait is considered to have had an additional impact. High-resolution core logging data (color b*, XRF scans) strongly correspond to the Dansgaard-Oeschger climate variability registered in the NGRIP ice core and support an atmospheric coupling mechanism of Northern Hemisphere climates. Article in Journal/Newspaper Bering Sea Bering Strait ice core NGRIP okhotsk sea Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Bering Sea Bering Strait Okhotsk Climate of the Past 9 3 1345 1373 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
We used piston cores recovered in the western Bering Sea to reconstruct millennial-scale changes in marine productivity and terrigenous matter supply over the past similar to 180 kyr. Based on a geochemical multi-proxy approach, our results indicate closely interacting processes controlling marine productivity and terrigenous matter supply comparable to the situation in the Okhotsk Sea. Overall, terrigenous inputs were high, whereas export production was low. Minor increases in marine productivity occurred during intervals of Marine Isotope Stage 5 and interstadials, but pronounced maxima were recorded during interglacials and Termination I. The terrigenous material is suggested to be derived from continental sources on the eastern Bering Sea shelf and to be subsequently transported via sea ice, which is likely to drive changes in surface productivity, terrigenous inputs, and upper-ocean stratification. From our results we propose glacial, deglacial, and interglacial scenarios for environmental change in the Bering Sea. These changes seem to be primarily controlled by insolation and sea-level forcing which affect the strength of atmospheric pressure systems and sea-ice growth. The opening history of the Bering Strait is considered to have had an additional impact. High-resolution core logging data (color b*, XRF scans) strongly correspond to the Dansgaard-Oeschger climate variability registered in the NGRIP ice core and support an atmospheric coupling mechanism of Northern Hemisphere climates. |
format |
Article in Journal/Newspaper |
author |
Riethdorf, Jan-Rainer Nürnberg, Dirk Max, L. Tiedemann, R. Gorbarenko, S. A. Malakhov, M. I. |
spellingShingle |
Riethdorf, Jan-Rainer Nürnberg, Dirk Max, L. Tiedemann, R. Gorbarenko, S. A. Malakhov, M. I. Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr |
author_facet |
Riethdorf, Jan-Rainer Nürnberg, Dirk Max, L. Tiedemann, R. Gorbarenko, S. A. Malakhov, M. I. |
author_sort |
Riethdorf, Jan-Rainer |
title |
Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr |
title_short |
Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr |
title_full |
Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr |
title_fullStr |
Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr |
title_full_unstemmed |
Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr |
title_sort |
millennial-scale variability of marine productivity and terrigenous matter supply in the western bering sea over the past 180 kyr |
publisher |
Copernicus Publications (EGU) |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/21991/ https://oceanrep.geomar.de/id/eprint/21991/1/cp-9-1345-2013.pdf https://doi.org/10.5194/cp-9-1345-2013 |
geographic |
Bering Sea Bering Strait Okhotsk |
geographic_facet |
Bering Sea Bering Strait Okhotsk |
genre |
Bering Sea Bering Strait ice core NGRIP okhotsk sea Sea ice |
genre_facet |
Bering Sea Bering Strait ice core NGRIP okhotsk sea Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/21991/1/cp-9-1345-2013.pdf Riethdorf, J. R., Nürnberg, D. , Max, L., Tiedemann, R., Gorbarenko, S. A. and Malakhov, M. I. (2013) Millennial-scale variability of marine productivity and terrigenous matter supply in the western Bering Sea over the past 180 kyr. Open Access Climate of the Past, 9 (3). pp. 1345-1373. DOI 10.5194/cp-9-1345-2013 <https://doi.org/10.5194/cp-9-1345-2013>. doi:10.5194/cp-9-1345-2013 |
op_rights |
cc_by info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-9-1345-2013 |
container_title |
Climate of the Past |
container_volume |
9 |
container_issue |
3 |
container_start_page |
1345 |
op_container_end_page |
1373 |
_version_ |
1766377263543091200 |