Summer sea surface temperatures calculated from radiolaria at ODP Site 177-1089 in the subantarctic Atlantic
A submillennial resolution, radiolarian-based record of summer sea surface temperature (SST) documents the last five glacial to interglacial transitions at the subtropical front, southern Atlantic Ocean. Rapid fluctuations occur both during glacial and interglacial intervals, and sudden cooling epis...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.684659 2024-09-15T18:14:51+00:00 Summer sea surface temperatures calculated from radiolaria at ODP Site 177-1089 in the subantarctic Atlantic Cortese, Giuseppe Abelmann, Andrea Gersonde, Rainer LATITUDE: -40.936333 * LONGITUDE: 9.893983 * DATE/TIME START: 1997-12-19T00:00:00 * DATE/TIME END: 1997-12-19T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.03 m * MAXIMUM DEPTH, sediment/rock: 67.57 m 2007 text/tab-separated-values, 477 data points https://doi.pangaea.de/10.1594/PANGAEA.684659 https://doi.org/10.1594/PANGAEA.684659 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.684659 https://doi.org/10.1594/PANGAEA.684659 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Cortese, Giuseppe; Abelmann, Andrea; Gersonde, Rainer (2007): The last five glacial-interglacial transitions: A high-resolution 450,000-year record from the subantarctic Atlantic. Paleoceanography, 22(4), PA4203, https://doi.org/10.1029/2007PA001457 177-1089 AGE COMPCORE Composite Core DEPTH sediment/rock International Polar Year (2007-2008) IPY Joides Resolution Leg177 Ocean Drilling Program ODP Sea surface temperature summer South Atlantic Ocean Transfer function (Imbrie & Kipp 1971 in Turekian Yale Univ Press) dataset 2007 ftpangaea https://doi.org/10.1594/PANGAEA.68465910.1029/2007PA001457 2024-07-24T02:31:30Z A submillennial resolution, radiolarian-based record of summer sea surface temperature (SST) documents the last five glacial to interglacial transitions at the subtropical front, southern Atlantic Ocean. Rapid fluctuations occur both during glacial and interglacial intervals, and sudden cooling episodes at glacial terminations are recurrent. Surface hydrography and global ice volume proxies from the same core suggest that summer SST increases prior to terminations lead global ice-volume decreases by 4.7 ± 3.7 ka (in the eccentricity band), 6.9 ± 2.5 ka (obliquity), and 2.7 ± 0.9 ka (precession). A comparison between SST and benthic delta13C suggests a decoupling in the response of northern subantarctic surface, intermediate, and deep water masses to cold events in the North Atlantic. The matching features between our SST record and the one from core MD97-2120 (southwest Pacific) suggests that the super-regional expression of climatic events is substantially affected by a single climatic agent: the Subtropical Front, amplifier and vehicle for the transfer of climatic change. The direct correlation between warmer DeltaTsite at Vostok and warmer SST at ODP Site 1089 suggests that warmer oceanic/atmospheric conditions imply a more southward placed frontal system, weaker gradients, and therefore stronger Agulhas input to the Atlantic Ocean. Dataset International Polar Year IPY North Atlantic South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(9.893983,9.893983,-40.936333,-40.936333) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
177-1089 AGE COMPCORE Composite Core DEPTH sediment/rock International Polar Year (2007-2008) IPY Joides Resolution Leg177 Ocean Drilling Program ODP Sea surface temperature summer South Atlantic Ocean Transfer function (Imbrie & Kipp 1971 in Turekian Yale Univ Press) |
spellingShingle |
177-1089 AGE COMPCORE Composite Core DEPTH sediment/rock International Polar Year (2007-2008) IPY Joides Resolution Leg177 Ocean Drilling Program ODP Sea surface temperature summer South Atlantic Ocean Transfer function (Imbrie & Kipp 1971 in Turekian Yale Univ Press) Cortese, Giuseppe Abelmann, Andrea Gersonde, Rainer Summer sea surface temperatures calculated from radiolaria at ODP Site 177-1089 in the subantarctic Atlantic |
topic_facet |
177-1089 AGE COMPCORE Composite Core DEPTH sediment/rock International Polar Year (2007-2008) IPY Joides Resolution Leg177 Ocean Drilling Program ODP Sea surface temperature summer South Atlantic Ocean Transfer function (Imbrie & Kipp 1971 in Turekian Yale Univ Press) |
description |
A submillennial resolution, radiolarian-based record of summer sea surface temperature (SST) documents the last five glacial to interglacial transitions at the subtropical front, southern Atlantic Ocean. Rapid fluctuations occur both during glacial and interglacial intervals, and sudden cooling episodes at glacial terminations are recurrent. Surface hydrography and global ice volume proxies from the same core suggest that summer SST increases prior to terminations lead global ice-volume decreases by 4.7 ± 3.7 ka (in the eccentricity band), 6.9 ± 2.5 ka (obliquity), and 2.7 ± 0.9 ka (precession). A comparison between SST and benthic delta13C suggests a decoupling in the response of northern subantarctic surface, intermediate, and deep water masses to cold events in the North Atlantic. The matching features between our SST record and the one from core MD97-2120 (southwest Pacific) suggests that the super-regional expression of climatic events is substantially affected by a single climatic agent: the Subtropical Front, amplifier and vehicle for the transfer of climatic change. The direct correlation between warmer DeltaTsite at Vostok and warmer SST at ODP Site 1089 suggests that warmer oceanic/atmospheric conditions imply a more southward placed frontal system, weaker gradients, and therefore stronger Agulhas input to the Atlantic Ocean. |
format |
Dataset |
author |
Cortese, Giuseppe Abelmann, Andrea Gersonde, Rainer |
author_facet |
Cortese, Giuseppe Abelmann, Andrea Gersonde, Rainer |
author_sort |
Cortese, Giuseppe |
title |
Summer sea surface temperatures calculated from radiolaria at ODP Site 177-1089 in the subantarctic Atlantic |
title_short |
Summer sea surface temperatures calculated from radiolaria at ODP Site 177-1089 in the subantarctic Atlantic |
title_full |
Summer sea surface temperatures calculated from radiolaria at ODP Site 177-1089 in the subantarctic Atlantic |
title_fullStr |
Summer sea surface temperatures calculated from radiolaria at ODP Site 177-1089 in the subantarctic Atlantic |
title_full_unstemmed |
Summer sea surface temperatures calculated from radiolaria at ODP Site 177-1089 in the subantarctic Atlantic |
title_sort |
summer sea surface temperatures calculated from radiolaria at odp site 177-1089 in the subantarctic atlantic |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.684659 https://doi.org/10.1594/PANGAEA.684659 |
op_coverage |
LATITUDE: -40.936333 * LONGITUDE: 9.893983 * DATE/TIME START: 1997-12-19T00:00:00 * DATE/TIME END: 1997-12-19T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.03 m * MAXIMUM DEPTH, sediment/rock: 67.57 m |
long_lat |
ENVELOPE(9.893983,9.893983,-40.936333,-40.936333) |
genre |
International Polar Year IPY North Atlantic South Atlantic Ocean |
genre_facet |
International Polar Year IPY North Atlantic South Atlantic Ocean |
op_source |
Supplement to: Cortese, Giuseppe; Abelmann, Andrea; Gersonde, Rainer (2007): The last five glacial-interglacial transitions: A high-resolution 450,000-year record from the subantarctic Atlantic. Paleoceanography, 22(4), PA4203, https://doi.org/10.1029/2007PA001457 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.684659 https://doi.org/10.1594/PANGAEA.684659 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.68465910.1029/2007PA001457 |
_version_ |
1810452630013476864 |