dc.contributor.author | Berben, Sarah Miche Patricia | |
dc.contributor.author | Husum, Katrine | |
dc.contributor.author | Navarro-Rodriguez, Alba | |
dc.contributor.author | Belt, Simon T. | |
dc.contributor.author | Sørensen, Steffen Aagaard | |
dc.date.accessioned | 2018-07-11T12:34:42Z | |
dc.date.available | 2018-07-11T12:34:42Z | |
dc.date.issued | 2017-06-07 | |
dc.description.abstract | Semi-quantitative estimates of early to late Holocene spring sea ice concentration (SpSIC) andoccurrence of summer sea ice for the northern Barents Sea have been obtained by analysing the biomarkers IP<sub>25</sub>,brassicasterol and a tri-unsaturated highly branched isoprenoid lipid in a Holocene marine sediment core.Sub-surface water mass variations were derived from planktic foraminiferal assemblages and stable isotopes (d<sup>18</sup>O,d<sup>13</sup>C). The record indicates paleoceanographic changes over three intervals. During Period I (ca. 9500–5900 cal aBP), the study location experienced the lowest recorded SpSIC (ca. 25%) with short spring seasons and longproductive summers, resulting partly from increased Atlantic Water inflow that caused a stronger ocean–atmosphere heat exchange. Throughout Period II (ca. 5900–2700 cal a BP), the winter sea ice margin migratedsouthwards and an overall cooling trend resulted in higher SpSIC (ca. 60%) and increased delivery of cold ArcticWater. During Period III (ca. 2700 cal a BP to present), SpSIC increased further (ca. 75%) and some sea iceremained during summer months. A sub-surface warming probably indicates a decoupling of heat exchangebetween the ocean and the atmosphere. Longer springs and shorter summers were accompanied by the mostsoutherly location of the winter sea ice margin. | en_US |
dc.description.sponsorship | UiT–The Arctic University of Norway and the Norwegian Polar Institute.
Statoil, DetNorske
BG Norge | en_US |
dc.description | Accepted manuscript version. Published version available at: <a href=http://doi.org/10.1002/jqs.2953> http://doi.org/10.1002/jqs.2953</a> | en_US |
dc.identifier.citation | Berben, S. M. P., Husum, K., Navarro-Rodriguez, A., Belt, S. T. & Sørensen, S. A. (2017). Semi-quantitative reconstruction of early to late Holocene spring and summer sea ice conditions in the northern Barents Sea. Journal of Quaternary Science, 32(5), 587-603. http://doi.org/10.1002/jqs.2953 | en_US |
dc.identifier.cristinID | FRIDAID 1543287 | |
dc.identifier.doi | 10.1002/jqs.2953 | |
dc.identifier.issn | 0267-8179 | |
dc.identifier.issn | 1099-1417 | |
dc.identifier.uri | https://hdl.handle.net/10037/13217 | |
dc.language.iso | eng | en_US |
dc.publisher | Wiley | en_US |
dc.relation.journal | Journal of Quaternary Science | |
dc.relation.projectID | info:eu-repo/grantAgreement/RCN/PETROMAKS/200672/Norway/Glaciations in the Barents Sea area// | en_US |
dc.relation.projectID | info:eu-repo/grantAgreement/RCN/PETROMAKS2/200672/Norway/Glaciations in the Barents Sea area// | en_US |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/238111/EU/THE CHANGING ARCTIC AND SUB-ARCTIC ENVIRONMENT: A RESEARCH AND TRAINING PROGRAMME ON MARINE BIOTIC INDICATORS OF RECENT CLIMATE CHANGES IN THE HIGH LATITUDES OF THE NORTH ATLANTIC/CASE/ | en_US |
dc.rights.accessRights | openAccess | en_US |
dc.subject | VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 | en_US |
dc.subject | VDP::Mathematics and natural science: 400::Geosciences: 450 | en_US |
dc.subject | VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 | en_US |
dc.subject | VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 | en_US |
dc.title | Semi-quantitative reconstruction of early to late Holocene spring and summer sea ice conditions in the northern Barents Sea | en_US |
dc.type | Journal article | en_US |
dc.type | Tidsskriftartikkel | en_US |
dc.type | Peer reviewed | en_US |