Proxy reconstruction of Arctic Ocean sea ice history - From IRD to IP25
This review paper focusses on reconstructions of the long- and short-term history of past Arctic Ocean sea-ice cover. Based on commonly used sedimentological, geochemical and micropaleontological proxies (ice-rafted debris (IRD), mineralogical composition of terrigenous sediment frac¬tion, and abund...
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Alfred Wegener Institute for Polar and Marine Research
2012
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ftawi:oai:epic.awi.de:31644 2023-05-15T14:26:42+02:00 Proxy reconstruction of Arctic Ocean sea ice history - From IRD to IP25 Stein, Rüdiger Fahl, Kirsten Müller, Juliane 2012 https://epic.awi.de/id/eprint/31644/ https://hdl.handle.net/10013/epic.41492 unknown Alfred Wegener Institute for Polar and Marine Research Stein, R. orcid:0000-0002-4453-9564 , Fahl, K. orcid:0000-0001-9317-4656 and Müller, J. orcid:0000-0003-0724-4131 (2012) Proxy reconstruction of Arctic Ocean sea ice history - From IRD to IP25 , Polarforschung, 82 , pp. 37-71 . hdl:10013/epic.41492 EPIC3Polarforschung, Alfred Wegener Institute for Polar and Marine Research, 82, pp. 37-71, ISSN: 0032-2490 Article peerRev 2012 ftawi 2021-12-24T15:38:09Z This review paper focusses on reconstructions of the long- and short-term history of past Arctic Ocean sea-ice cover. Based on commonly used sedimentological, geochemical and micropaleontological proxies (ice-rafted debris (IRD), mineralogical composition of terrigenous sediment frac¬tion, and abundances of specific diatoms and foraminifers), three examples of reconstructions of glacial history, sea-ice cover and surface-water character¬istics are presented and discussed: (1) the onset Arctic Ocean sea-ice cover near 47 Ma and its long-term variability through Cenozoic times; (2) the Quaternary glacial/interglacial variability in Arctic Ocean ice-rafting and its relationship to sea-ice and ice-sheet history; and (3) Last Glacial Maximum (LGM), Deglacial to Holocene changes in Arctic Ocean sea-ice cover and ice-sheet decay. In the second part of this paper we concentrate on Arctic Ocean sea-ice reconstructions, using a recently developed biomarker approach that is based on the determination of sea-ice diatom-specific highly-branched isoprenoids with 25 carbon atoms (IP25; BELT et al. 2007) and IP25 in combination with phytoplankton biomarkers (PIP25; MÜLLER et al. 2009, 2011). The diene/ IP25 ratio might give additional information about sea-surface temperature (SST) in the low temperature Arctic environment (FAHL & STEIN 2012). The high potential of these novel biomarker proxies to improve reconstructions of paleo-sea-ice cover and its variability through time is demonstrated in three examples: (a) the sea-ice variability in Fram Strait over the last 30 ka, (b) the deglacial/Holocene variability of central Arctic sea-ice cover with special emphasis on the Younger Dryas Cooling Event, and (c) a comparison of historical sea-ice observations off northern Iceland over the last millennium and a corresponding high-resolution IP25 record. In a pilot study carried out in a sediment core from the Barents Sea conti-nental slope we were able to prove for the first time that IP25 is even pre-served in sediments as old as 130 to 150 ka (MIS 6), i.e., IP25 can be used for reconstruction of sea-ice variability during older glacial/interglacial intervals (MIS 6/MIS 5). In order to establish the IP25 approach as a key proxy for reconstruction of past Arctic Ocean sea-ice conditions, more basic information about produc-tion, degradation and preservation/burial of the IP25 signal is still needed. Furthermore, the hypothesis that the diene/IP25 ratio might be used as reliable proxy for SST reconstructions in the low temperature Arctic environments has to be verified by a ground-truth study including the IP25 and diene data as well as independent SST proxies like alkenone-derived SST. All these data should be obtained in future investigations of sea-ice, water column, and sediment-trap samples as well as surface sediments and sediment cores with large spatial coverage from different environments of the entire Arctic Ocean. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Barents Sea Fram Strait Ice Sheet Iceland Phytoplankton Polarforschung Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Barents Sea |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
This review paper focusses on reconstructions of the long- and short-term history of past Arctic Ocean sea-ice cover. Based on commonly used sedimentological, geochemical and micropaleontological proxies (ice-rafted debris (IRD), mineralogical composition of terrigenous sediment frac¬tion, and abundances of specific diatoms and foraminifers), three examples of reconstructions of glacial history, sea-ice cover and surface-water character¬istics are presented and discussed: (1) the onset Arctic Ocean sea-ice cover near 47 Ma and its long-term variability through Cenozoic times; (2) the Quaternary glacial/interglacial variability in Arctic Ocean ice-rafting and its relationship to sea-ice and ice-sheet history; and (3) Last Glacial Maximum (LGM), Deglacial to Holocene changes in Arctic Ocean sea-ice cover and ice-sheet decay. In the second part of this paper we concentrate on Arctic Ocean sea-ice reconstructions, using a recently developed biomarker approach that is based on the determination of sea-ice diatom-specific highly-branched isoprenoids with 25 carbon atoms (IP25; BELT et al. 2007) and IP25 in combination with phytoplankton biomarkers (PIP25; MÜLLER et al. 2009, 2011). The diene/ IP25 ratio might give additional information about sea-surface temperature (SST) in the low temperature Arctic environment (FAHL & STEIN 2012). The high potential of these novel biomarker proxies to improve reconstructions of paleo-sea-ice cover and its variability through time is demonstrated in three examples: (a) the sea-ice variability in Fram Strait over the last 30 ka, (b) the deglacial/Holocene variability of central Arctic sea-ice cover with special emphasis on the Younger Dryas Cooling Event, and (c) a comparison of historical sea-ice observations off northern Iceland over the last millennium and a corresponding high-resolution IP25 record. In a pilot study carried out in a sediment core from the Barents Sea conti-nental slope we were able to prove for the first time that IP25 is even pre-served in sediments as old as 130 to 150 ka (MIS 6), i.e., IP25 can be used for reconstruction of sea-ice variability during older glacial/interglacial intervals (MIS 6/MIS 5). In order to establish the IP25 approach as a key proxy for reconstruction of past Arctic Ocean sea-ice conditions, more basic information about produc-tion, degradation and preservation/burial of the IP25 signal is still needed. Furthermore, the hypothesis that the diene/IP25 ratio might be used as reliable proxy for SST reconstructions in the low temperature Arctic environments has to be verified by a ground-truth study including the IP25 and diene data as well as independent SST proxies like alkenone-derived SST. All these data should be obtained in future investigations of sea-ice, water column, and sediment-trap samples as well as surface sediments and sediment cores with large spatial coverage from different environments of the entire Arctic Ocean. |
format |
Article in Journal/Newspaper |
author |
Stein, Rüdiger Fahl, Kirsten Müller, Juliane |
spellingShingle |
Stein, Rüdiger Fahl, Kirsten Müller, Juliane Proxy reconstruction of Arctic Ocean sea ice history - From IRD to IP25 |
author_facet |
Stein, Rüdiger Fahl, Kirsten Müller, Juliane |
author_sort |
Stein, Rüdiger |
title |
Proxy reconstruction of Arctic Ocean sea ice history - From IRD to IP25 |
title_short |
Proxy reconstruction of Arctic Ocean sea ice history - From IRD to IP25 |
title_full |
Proxy reconstruction of Arctic Ocean sea ice history - From IRD to IP25 |
title_fullStr |
Proxy reconstruction of Arctic Ocean sea ice history - From IRD to IP25 |
title_full_unstemmed |
Proxy reconstruction of Arctic Ocean sea ice history - From IRD to IP25 |
title_sort |
proxy reconstruction of arctic ocean sea ice history - from ird to ip25 |
publisher |
Alfred Wegener Institute for Polar and Marine Research |
publishDate |
2012 |
url |
https://epic.awi.de/id/eprint/31644/ https://hdl.handle.net/10013/epic.41492 |
geographic |
Arctic Arctic Ocean Barents Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea |
genre |
Arctic Arctic Arctic Ocean Barents Sea Fram Strait Ice Sheet Iceland Phytoplankton Polarforschung Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Barents Sea Fram Strait Ice Sheet Iceland Phytoplankton Polarforschung Sea ice |
op_source |
EPIC3Polarforschung, Alfred Wegener Institute for Polar and Marine Research, 82, pp. 37-71, ISSN: 0032-2490 |
op_relation |
Stein, R. orcid:0000-0002-4453-9564 , Fahl, K. orcid:0000-0001-9317-4656 and Müller, J. orcid:0000-0003-0724-4131 (2012) Proxy reconstruction of Arctic Ocean sea ice history - From IRD to IP25 , Polarforschung, 82 , pp. 37-71 . hdl:10013/epic.41492 |
_version_ |
1766299997550149632 |