Paleotemperature reconstructions of the Atlantic Sector of the Southern Ocean, supplement to: Kunz-Pirrung, Martina; Gersonde, Rainer; Hodell, David A (2002): Mid-Brunhes century-scale diatom sea surface temperature and sea ice records from the Atlantic sector of the Southern Ocean (ODP Leg 177, sites 1093, 1094 and core PS2089-2). Palaeogeography, Palaeoclimatology, Palaeoecology, 182(3-4), 305-328
Diatom assemblages from ODP Leg 177 sites 1093, 1094 and core PS2089-2, from the present Antarctic sea ice free zone and close to the Polar Front, were analyzed in order to reconstruct the climate development around the Mid-Brunhes Event 400 000 yr ago, as reflected by summer sea surface temperature...
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Online Access: | https://dx.doi.org/10.1594/pangaea.706201 https://doi.pangaea.de/10.1594/PANGAEA.706201 |
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ftdatacite:10.1594/pangaea.706201 2023-05-15T13:59:34+02:00 Paleotemperature reconstructions of the Atlantic Sector of the Southern Ocean, supplement to: Kunz-Pirrung, Martina; Gersonde, Rainer; Hodell, David A (2002): Mid-Brunhes century-scale diatom sea surface temperature and sea ice records from the Atlantic sector of the Southern Ocean (ODP Leg 177, sites 1093, 1094 and core PS2089-2). Palaeogeography, Palaeoclimatology, Palaeoecology, 182(3-4), 305-328 Kunz-Pirrung, Martina Gersonde, Rainer Hodell, David A 2002 application/zip https://dx.doi.org/10.1594/pangaea.706201 https://doi.pangaea.de/10.1594/PANGAEA.706201 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/s0031-0182(01)00501-6 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Drilling/drill rig Piston corer BGR type Leg177 ANT-IX/4 Joides Resolution Polarstern Ocean Drilling Program ODP Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo article Supplementary Collection of Datasets Collection 2002 ftdatacite https://doi.org/10.1594/pangaea.706201 https://doi.org/10.1016/s0031-0182(01)00501-6 2022-02-09T12:04:35Z Diatom assemblages from ODP Leg 177 sites 1093, 1094 and core PS2089-2, from the present Antarctic sea ice free zone and close to the Polar Front, were analyzed in order to reconstruct the climate development around the Mid-Brunhes Event 400 000 yr ago, as reflected by summer sea surface temperature (SSST) and sea ice distribution. Dense sample spacing allows a mean temporal resolution during Marine Isotope Stage (MIS) 11 (423-362 ka) of 300-400 yr. SSST values were estimated from diatom assemblages using a transfer function technique. The distribution pattern of sea ice diatoms indicates that the present-day ice free Antarctic Zone was seasonally covered by sea ice during the cold MIS 12 and MIS 10. These glacial periods are characterized by sea ice fluctuations with a periodicity of 3 and 1.85 kyr, suggesting the occurrence of Dansgaard-Oeschger-style millennial-scale oscillations in the Atlantic sector of the Southern Ocean during the glacial stages MIS 12 and MIS 10. Termination V (MIS 12/11) is characterized by a distinct temperature increase of 4-6°C, intersected especially at the southern site 1094 and core PS2089-2 by two distinct cooling events reminiscent of the Younger Dryas, which are associated with a northward shift of the winter sea ice edge in the Antarctic Zone. The SSST record is characterized by distinct temperature intervals bounded by stepwise, rapid changes. Maximum temperatures were reached during Termination V and the early MIS 11, exceeding modern values by 2°C over a period of 8 kyr. This pattern indicates a very early response of the Southern Ocean to global climate on Milankovitch-driven climate variability. The SSST optimum is marked by millennial-scale temperature oscillations with an amplitude of ca. 1°C and periodicities of ca. 1.85 and 1.47 kyr, probably reflecting changes in the ocean circulation system. The SSSTs during the MIS 11 temperature optimum do not exceed values obtained from other interglacial optima such as the early periods of MIS 5 or MIS 1 from the Antarctic Zone. However, the total duration of the warmest period was distinctly longer than observed from other interglacials. The comparison of the South Atlantic climate record with a high-resolution record from ODP Leg 162, site 980from the North Atlantic shows a strong conformity in the climate development during the studied time interval. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Sea ice Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Martina ENVELOPE(-75.217,-75.217,-69.783,-69.783) Southern Ocean The Antarctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Drilling/drill rig Piston corer BGR type Leg177 ANT-IX/4 Joides Resolution Polarstern Ocean Drilling Program ODP Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
spellingShingle |
Drilling/drill rig Piston corer BGR type Leg177 ANT-IX/4 Joides Resolution Polarstern Ocean Drilling Program ODP Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo Kunz-Pirrung, Martina Gersonde, Rainer Hodell, David A Paleotemperature reconstructions of the Atlantic Sector of the Southern Ocean, supplement to: Kunz-Pirrung, Martina; Gersonde, Rainer; Hodell, David A (2002): Mid-Brunhes century-scale diatom sea surface temperature and sea ice records from the Atlantic sector of the Southern Ocean (ODP Leg 177, sites 1093, 1094 and core PS2089-2). Palaeogeography, Palaeoclimatology, Palaeoecology, 182(3-4), 305-328 |
topic_facet |
Drilling/drill rig Piston corer BGR type Leg177 ANT-IX/4 Joides Resolution Polarstern Ocean Drilling Program ODP Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo |
description |
Diatom assemblages from ODP Leg 177 sites 1093, 1094 and core PS2089-2, from the present Antarctic sea ice free zone and close to the Polar Front, were analyzed in order to reconstruct the climate development around the Mid-Brunhes Event 400 000 yr ago, as reflected by summer sea surface temperature (SSST) and sea ice distribution. Dense sample spacing allows a mean temporal resolution during Marine Isotope Stage (MIS) 11 (423-362 ka) of 300-400 yr. SSST values were estimated from diatom assemblages using a transfer function technique. The distribution pattern of sea ice diatoms indicates that the present-day ice free Antarctic Zone was seasonally covered by sea ice during the cold MIS 12 and MIS 10. These glacial periods are characterized by sea ice fluctuations with a periodicity of 3 and 1.85 kyr, suggesting the occurrence of Dansgaard-Oeschger-style millennial-scale oscillations in the Atlantic sector of the Southern Ocean during the glacial stages MIS 12 and MIS 10. Termination V (MIS 12/11) is characterized by a distinct temperature increase of 4-6°C, intersected especially at the southern site 1094 and core PS2089-2 by two distinct cooling events reminiscent of the Younger Dryas, which are associated with a northward shift of the winter sea ice edge in the Antarctic Zone. The SSST record is characterized by distinct temperature intervals bounded by stepwise, rapid changes. Maximum temperatures were reached during Termination V and the early MIS 11, exceeding modern values by 2°C over a period of 8 kyr. This pattern indicates a very early response of the Southern Ocean to global climate on Milankovitch-driven climate variability. The SSST optimum is marked by millennial-scale temperature oscillations with an amplitude of ca. 1°C and periodicities of ca. 1.85 and 1.47 kyr, probably reflecting changes in the ocean circulation system. The SSSTs during the MIS 11 temperature optimum do not exceed values obtained from other interglacial optima such as the early periods of MIS 5 or MIS 1 from the Antarctic Zone. However, the total duration of the warmest period was distinctly longer than observed from other interglacials. The comparison of the South Atlantic climate record with a high-resolution record from ODP Leg 162, site 980from the North Atlantic shows a strong conformity in the climate development during the studied time interval. |
format |
Article in Journal/Newspaper |
author |
Kunz-Pirrung, Martina Gersonde, Rainer Hodell, David A |
author_facet |
Kunz-Pirrung, Martina Gersonde, Rainer Hodell, David A |
author_sort |
Kunz-Pirrung, Martina |
title |
Paleotemperature reconstructions of the Atlantic Sector of the Southern Ocean, supplement to: Kunz-Pirrung, Martina; Gersonde, Rainer; Hodell, David A (2002): Mid-Brunhes century-scale diatom sea surface temperature and sea ice records from the Atlantic sector of the Southern Ocean (ODP Leg 177, sites 1093, 1094 and core PS2089-2). Palaeogeography, Palaeoclimatology, Palaeoecology, 182(3-4), 305-328 |
title_short |
Paleotemperature reconstructions of the Atlantic Sector of the Southern Ocean, supplement to: Kunz-Pirrung, Martina; Gersonde, Rainer; Hodell, David A (2002): Mid-Brunhes century-scale diatom sea surface temperature and sea ice records from the Atlantic sector of the Southern Ocean (ODP Leg 177, sites 1093, 1094 and core PS2089-2). Palaeogeography, Palaeoclimatology, Palaeoecology, 182(3-4), 305-328 |
title_full |
Paleotemperature reconstructions of the Atlantic Sector of the Southern Ocean, supplement to: Kunz-Pirrung, Martina; Gersonde, Rainer; Hodell, David A (2002): Mid-Brunhes century-scale diatom sea surface temperature and sea ice records from the Atlantic sector of the Southern Ocean (ODP Leg 177, sites 1093, 1094 and core PS2089-2). Palaeogeography, Palaeoclimatology, Palaeoecology, 182(3-4), 305-328 |
title_fullStr |
Paleotemperature reconstructions of the Atlantic Sector of the Southern Ocean, supplement to: Kunz-Pirrung, Martina; Gersonde, Rainer; Hodell, David A (2002): Mid-Brunhes century-scale diatom sea surface temperature and sea ice records from the Atlantic sector of the Southern Ocean (ODP Leg 177, sites 1093, 1094 and core PS2089-2). Palaeogeography, Palaeoclimatology, Palaeoecology, 182(3-4), 305-328 |
title_full_unstemmed |
Paleotemperature reconstructions of the Atlantic Sector of the Southern Ocean, supplement to: Kunz-Pirrung, Martina; Gersonde, Rainer; Hodell, David A (2002): Mid-Brunhes century-scale diatom sea surface temperature and sea ice records from the Atlantic sector of the Southern Ocean (ODP Leg 177, sites 1093, 1094 and core PS2089-2). Palaeogeography, Palaeoclimatology, Palaeoecology, 182(3-4), 305-328 |
title_sort |
paleotemperature reconstructions of the atlantic sector of the southern ocean, supplement to: kunz-pirrung, martina; gersonde, rainer; hodell, david a (2002): mid-brunhes century-scale diatom sea surface temperature and sea ice records from the atlantic sector of the southern ocean (odp leg 177, sites 1093, 1094 and core ps2089-2). palaeogeography, palaeoclimatology, palaeoecology, 182(3-4), 305-328 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2002 |
url |
https://dx.doi.org/10.1594/pangaea.706201 https://doi.pangaea.de/10.1594/PANGAEA.706201 |
long_lat |
ENVELOPE(-75.217,-75.217,-69.783,-69.783) |
geographic |
Antarctic Martina Southern Ocean The Antarctic |
geographic_facet |
Antarctic Martina Southern Ocean The Antarctic |
genre |
Antarc* Antarctic North Atlantic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic North Atlantic Sea ice Southern Ocean |
op_relation |
https://dx.doi.org/10.1016/s0031-0182(01)00501-6 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.706201 https://doi.org/10.1016/s0031-0182(01)00501-6 |
_version_ |
1766268175859580928 |