Holocene sea subsurface and surface water masses in the Fram Strait – Comparisons of temperature and sea-ice reconstructions
Highlights • Holocene sea subsurface temperatures after Husum & Hald (2012) estimated from planktic foraminifer fauna in E Fram Strait. • Biomarkers and IP25-derived indices (including DIP25) indicate surface water variability. • Delayed onset of early Holocene conditions in subsurface (∼10.6 ka...
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Online Access: | https://oceanrep.geomar.de/id/eprint/30703/ https://oceanrep.geomar.de/id/eprint/30703/1/Werner.pdf https://doi.org/10.1016/j.quascirev.2015.09.007 |
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ftoceanrep:oai:oceanrep.geomar.de:30703 2023-05-15T16:18:03+02:00 Holocene sea subsurface and surface water masses in the Fram Strait – Comparisons of temperature and sea-ice reconstructions Werner, Kirstin Müller, Juliane Husum, Katrine Spielhagen, Robert F. Kandiano, Evgeniya S. Polyak, Leonid 2016-09-01 text https://oceanrep.geomar.de/id/eprint/30703/ https://oceanrep.geomar.de/id/eprint/30703/1/Werner.pdf https://doi.org/10.1016/j.quascirev.2015.09.007 en eng Elsevier https://oceanrep.geomar.de/id/eprint/30703/1/Werner.pdf Werner, K., Müller, J., Husum, K., Spielhagen, R. F., Kandiano, E. S. and Polyak, L. (2016) Holocene sea subsurface and surface water masses in the Fram Strait – Comparisons of temperature and sea-ice reconstructions. Quaternary Science Reviews, 147 . pp. 194-209. DOI 10.1016/j.quascirev.2015.09.007 <https://doi.org/10.1016/j.quascirev.2015.09.007>. doi:10.1016/j.quascirev.2015.09.007 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2016 ftoceanrep https://doi.org/10.1016/j.quascirev.2015.09.007 2023-04-07T15:22:31Z Highlights • Holocene sea subsurface temperatures after Husum & Hald (2012) estimated from planktic foraminifer fauna in E Fram Strait. • Biomarkers and IP25-derived indices (including DIP25) indicate surface water variability. • Delayed onset of early Holocene conditions in subsurface (∼10.6 ka) compared to surface (∼11.7 ka) water conditions. • Warm Atlantic layer likely occupied uppermost 200 m in eastern Fram Strait between 10 and 9 ka. • Diverging late Holocene trends in surface and subsurface conditions linked to presence of strong pycnocline/stratification. Abstract Two high-resolution sediment cores from eastern Fram Strait have been investigated for sea subsurface and surface temperature variability during the Holocene (the past ca 12,000 years). The transfer function developed by Husum and Hald (2012) has been applied to sediment cores in order to reconstruct fluctuations of sea subsurface temperatures throughout the period. Additional biomarker and foraminiferal proxy data are used to elucidate variability between surface and subsurface water mass conditions, and to conclude on the Holocene climate and oceanographic variability on the West Spitsbergen continental margin. Results consistently reveal warm sea surface to subsurface temperatures of up to 6 °C until ca 5 cal ka BP, with maximum seawater temperatures around 10 cal ka BP, likely related to maximum July insolation occurring at that time. Maximum Atlantic Water (AW) advection occurred at surface and subsurface between 10.6 and 8.5 cal ka BP based on both foraminiferal and dinocyst temperature reconstructions. Probably, a less-stratified, ice-free, nutrient-rich surface ocean with strong AW advection prevailed in the eastern Fram Strait between 10 and 9 cal ka BP. Weakened AW contribution is found after ca 5 cal ka BP when subsurface temperatures strongly decrease with minimum values between ca 4 and 3 cal ka BP. Cold late Holocene conditions are furthermore supported by high planktic foraminifer shell fragmentation and high δ18O values of ... Article in Journal/Newspaper Fram Strait Sea ice Spitsbergen OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Quaternary Science Reviews 147 194 209 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Highlights • Holocene sea subsurface temperatures after Husum & Hald (2012) estimated from planktic foraminifer fauna in E Fram Strait. • Biomarkers and IP25-derived indices (including DIP25) indicate surface water variability. • Delayed onset of early Holocene conditions in subsurface (∼10.6 ka) compared to surface (∼11.7 ka) water conditions. • Warm Atlantic layer likely occupied uppermost 200 m in eastern Fram Strait between 10 and 9 ka. • Diverging late Holocene trends in surface and subsurface conditions linked to presence of strong pycnocline/stratification. Abstract Two high-resolution sediment cores from eastern Fram Strait have been investigated for sea subsurface and surface temperature variability during the Holocene (the past ca 12,000 years). The transfer function developed by Husum and Hald (2012) has been applied to sediment cores in order to reconstruct fluctuations of sea subsurface temperatures throughout the period. Additional biomarker and foraminiferal proxy data are used to elucidate variability between surface and subsurface water mass conditions, and to conclude on the Holocene climate and oceanographic variability on the West Spitsbergen continental margin. Results consistently reveal warm sea surface to subsurface temperatures of up to 6 °C until ca 5 cal ka BP, with maximum seawater temperatures around 10 cal ka BP, likely related to maximum July insolation occurring at that time. Maximum Atlantic Water (AW) advection occurred at surface and subsurface between 10.6 and 8.5 cal ka BP based on both foraminiferal and dinocyst temperature reconstructions. Probably, a less-stratified, ice-free, nutrient-rich surface ocean with strong AW advection prevailed in the eastern Fram Strait between 10 and 9 cal ka BP. Weakened AW contribution is found after ca 5 cal ka BP when subsurface temperatures strongly decrease with minimum values between ca 4 and 3 cal ka BP. Cold late Holocene conditions are furthermore supported by high planktic foraminifer shell fragmentation and high δ18O values of ... |
format |
Article in Journal/Newspaper |
author |
Werner, Kirstin Müller, Juliane Husum, Katrine Spielhagen, Robert F. Kandiano, Evgeniya S. Polyak, Leonid |
spellingShingle |
Werner, Kirstin Müller, Juliane Husum, Katrine Spielhagen, Robert F. Kandiano, Evgeniya S. Polyak, Leonid Holocene sea subsurface and surface water masses in the Fram Strait – Comparisons of temperature and sea-ice reconstructions |
author_facet |
Werner, Kirstin Müller, Juliane Husum, Katrine Spielhagen, Robert F. Kandiano, Evgeniya S. Polyak, Leonid |
author_sort |
Werner, Kirstin |
title |
Holocene sea subsurface and surface water masses in the Fram Strait – Comparisons of temperature and sea-ice reconstructions |
title_short |
Holocene sea subsurface and surface water masses in the Fram Strait – Comparisons of temperature and sea-ice reconstructions |
title_full |
Holocene sea subsurface and surface water masses in the Fram Strait – Comparisons of temperature and sea-ice reconstructions |
title_fullStr |
Holocene sea subsurface and surface water masses in the Fram Strait – Comparisons of temperature and sea-ice reconstructions |
title_full_unstemmed |
Holocene sea subsurface and surface water masses in the Fram Strait – Comparisons of temperature and sea-ice reconstructions |
title_sort |
holocene sea subsurface and surface water masses in the fram strait – comparisons of temperature and sea-ice reconstructions |
publisher |
Elsevier |
publishDate |
2016 |
url |
https://oceanrep.geomar.de/id/eprint/30703/ https://oceanrep.geomar.de/id/eprint/30703/1/Werner.pdf https://doi.org/10.1016/j.quascirev.2015.09.007 |
genre |
Fram Strait Sea ice Spitsbergen |
genre_facet |
Fram Strait Sea ice Spitsbergen |
op_relation |
https://oceanrep.geomar.de/id/eprint/30703/1/Werner.pdf Werner, K., Müller, J., Husum, K., Spielhagen, R. F., Kandiano, E. S. and Polyak, L. (2016) Holocene sea subsurface and surface water masses in the Fram Strait – Comparisons of temperature and sea-ice reconstructions. Quaternary Science Reviews, 147 . pp. 194-209. DOI 10.1016/j.quascirev.2015.09.007 <https://doi.org/10.1016/j.quascirev.2015.09.007>. doi:10.1016/j.quascirev.2015.09.007 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2015.09.007 |
container_title |
Quaternary Science Reviews |
container_volume |
147 |
container_start_page |
194 |
op_container_end_page |
209 |
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1766004097445527552 |