Variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar North Pacific and Bering Sea: Reconstruction from biomarker data
In order to study the modern sea surface characteristics of the sub-polar North Pacific and the Bering Sea, i.e. sea surface temperature (SST) and sea ice cover, surface sediments recovered during the RV Sonne Expedition 202 in 2009 were analysed. To distinguish between marine and terrestrial organi...
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Online Access: | https://oceanrep.geomar.de/id/eprint/25390/ https://doi.org/10.1016/j.orggeochem.2013.01.008 |
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ftoceanrep:oai:oceanrep.geomar.de:25390 2023-05-15T15:43:13+02:00 Variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar North Pacific and Bering Sea: Reconstruction from biomarker data Méheust, M. Fahl, K. Stein , R. 2013 https://oceanrep.geomar.de/id/eprint/25390/ https://doi.org/10.1016/j.orggeochem.2013.01.008 unknown Elsevier Méheust, M., Fahl, K. and Stein , R. (2013) Variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar North Pacific and Bering Sea: Reconstruction from biomarker data. Organic Geochemistry, 57 . pp. 54-64. DOI 10.1016/j.orggeochem.2013.01.008 <https://doi.org/10.1016/j.orggeochem.2013.01.008>. doi:10.1016/j.orggeochem.2013.01.008 Article PeerReviewed 2013 ftoceanrep https://doi.org/10.1016/j.orggeochem.2013.01.008 2023-04-07T15:14:04Z In order to study the modern sea surface characteristics of the sub-polar North Pacific and the Bering Sea, i.e. sea surface temperature (SST) and sea ice cover, surface sediments recovered during the RV Sonne Expedition 202 in 2009 were analysed. To distinguish between marine and terrestrial organic carbon, hydrogen index values, long chain n-alkanes and specific sterols have been determined. The results show that in the Bering Sea, especially on the sea slope, the organic carbon source is mainly caused by high primary production. In the North Pacific, on the other hand, the organic material originates predominantly from terrestrial higher plants, probably related to dust input from Asia. SST has been reconstructed using the modified alkenone unsaturation index. Calibration from Müller et al. (1998) offers the most reliable estimate of mean annual temperature in the central North Pacific but does not correlate with mean annual temperature throughout the study area. In the eastern North Pacific and the Bering Sea, the Sikes et al. (1997) calibration seems to be more accurate and matches summer SST. The distribution of the novel sea ice proxy IP25 (highly branched C25 isoprenoid alkene) in surface sediments is in accord with the modern spring sea ice edge and shows the potential of this proxy to track past variation in sea ice cover in the study area. Article in Journal/Newspaper Bering Sea Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Bering Sea Pacific Organic Geochemistry 57 54 64 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
unknown |
description |
In order to study the modern sea surface characteristics of the sub-polar North Pacific and the Bering Sea, i.e. sea surface temperature (SST) and sea ice cover, surface sediments recovered during the RV Sonne Expedition 202 in 2009 were analysed. To distinguish between marine and terrestrial organic carbon, hydrogen index values, long chain n-alkanes and specific sterols have been determined. The results show that in the Bering Sea, especially on the sea slope, the organic carbon source is mainly caused by high primary production. In the North Pacific, on the other hand, the organic material originates predominantly from terrestrial higher plants, probably related to dust input from Asia. SST has been reconstructed using the modified alkenone unsaturation index. Calibration from Müller et al. (1998) offers the most reliable estimate of mean annual temperature in the central North Pacific but does not correlate with mean annual temperature throughout the study area. In the eastern North Pacific and the Bering Sea, the Sikes et al. (1997) calibration seems to be more accurate and matches summer SST. The distribution of the novel sea ice proxy IP25 (highly branched C25 isoprenoid alkene) in surface sediments is in accord with the modern spring sea ice edge and shows the potential of this proxy to track past variation in sea ice cover in the study area. |
format |
Article in Journal/Newspaper |
author |
Méheust, M. Fahl, K. Stein , R. |
spellingShingle |
Méheust, M. Fahl, K. Stein , R. Variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar North Pacific and Bering Sea: Reconstruction from biomarker data |
author_facet |
Méheust, M. Fahl, K. Stein , R. |
author_sort |
Méheust, M. |
title |
Variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar North Pacific and Bering Sea: Reconstruction from biomarker data |
title_short |
Variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar North Pacific and Bering Sea: Reconstruction from biomarker data |
title_full |
Variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar North Pacific and Bering Sea: Reconstruction from biomarker data |
title_fullStr |
Variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar North Pacific and Bering Sea: Reconstruction from biomarker data |
title_full_unstemmed |
Variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar North Pacific and Bering Sea: Reconstruction from biomarker data |
title_sort |
variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar north pacific and bering sea: reconstruction from biomarker data |
publisher |
Elsevier |
publishDate |
2013 |
url |
https://oceanrep.geomar.de/id/eprint/25390/ https://doi.org/10.1016/j.orggeochem.2013.01.008 |
geographic |
Bering Sea Pacific |
geographic_facet |
Bering Sea Pacific |
genre |
Bering Sea Sea ice |
genre_facet |
Bering Sea Sea ice |
op_relation |
Méheust, M., Fahl, K. and Stein , R. (2013) Variability in modern sea surface temperature, sea ice and terrigenous input in the sub-polar North Pacific and Bering Sea: Reconstruction from biomarker data. Organic Geochemistry, 57 . pp. 54-64. DOI 10.1016/j.orggeochem.2013.01.008 <https://doi.org/10.1016/j.orggeochem.2013.01.008>. doi:10.1016/j.orggeochem.2013.01.008 |
op_doi |
https://doi.org/10.1016/j.orggeochem.2013.01.008 |
container_title |
Organic Geochemistry |
container_volume |
57 |
container_start_page |
54 |
op_container_end_page |
64 |
_version_ |
1766377262978957312 |