Estimation of sea surface temperatures and salinity of ODP Site 177-1089 (Appendix A)
ODP Site 1089 is optimally located in order to monitor the occurrence of maxima in Agulhas heat and salt spillage from the Indian to the Atlantic Ocean. Radiolarian-based paleotemperature transfer functions allowed to reconstruct the climatic history for the last 450 kyr at this location. A warm sea...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.712940 2023-05-15T13:31:38+02:00 Estimation of sea surface temperatures and salinity of ODP Site 177-1089 (Appendix A) 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: 0.41 m * MAXIMUM DEPTH, sediment/rock: 67.57 m 2004-02-18 text/tab-separated-values, 1827 data points https://doi.pangaea.de/10.1594/PANGAEA.712940 https://doi.org/10.1594/PANGAEA.712940 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.712940 https://doi.org/10.1594/PANGAEA.712940 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Cortese, Giuseppe; Abelmann, Andrea; Gersonde, Rainer (2004): A glacial warm water anomaly in the subantarctic Atlantic Ocean, near the Agulhas Retroflection. Earth and Planetary Science Letters, 222(3-4), 767-778, https://doi.org/10.1016/j.epsl.2004.03.029 177-1089 AGE Calculated Cibicidoides spp. δ18O COMPCORE Composite Core DEPTH sediment/rock Globigerina bulloides Joides Resolution Leg177 Ocean Drilling Program ODP Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Sea surface temperature summer South Atlantic Ocean SPP1158 Δδ18O water Dataset 2004 ftpangaea https://doi.org/10.1594/PANGAEA.712940 https://doi.org/10.1016/j.epsl.2004.03.029 2023-01-20T08:47:16Z ODP Site 1089 is optimally located in order to monitor the occurrence of maxima in Agulhas heat and salt spillage from the Indian to the Atlantic Ocean. Radiolarian-based paleotemperature transfer functions allowed to reconstruct the climatic history for the last 450 kyr at this location. A warm sea surface temperature anomaly during Marine Isotope Stage (MIS) 10 was recognized and traced to other oceanic records along the surface branch of the global thermohaline (THC) circulation system, and is particularly marked at locations where a strong interaction between oceanic and atmospheric overturning cells and fronts occurs. This anomaly is absent in the Vostok ice core deuterium, and in oceanic records from the Antarctic Zone. However, it is present in the deuterium excess record from the Vostok ice core, interpreted as reflecting the temperature at the moisture source site for the snow precipitated at Vostok Station. As atmospheric models predict a subtropical Indian source for such moisture, this provides the necessary teleconnection between East Antarctica and ODP Site 1089, as the subtropical Indian is also the source area of the Agulhas Current, the main climate agent at our study location. The presence of the MIS 10 anomaly in the delta13C foraminiferal records from the same core supports its connection to oceanic mechanisms, linking stronger Agulhas spillover intensity to increased productivity in the study area. We suggest, in analogy to modern oceanographic observations, this to be a consequence of a shallow nutricline, induced by eddy mixing and baroclinic tide generation, which are in turn connected to the flow geometry, and intensity, of the Agulhas Current as it flows past the Agulhas Bank. We interpret the intensified inflow of Agulhas Current to the South Atlantic as responding to the switch between lower and higher amplitude in the insolation forcing in the Agulhas Current source area. This would result in higher SSTs in the Cape Basin during the glacial MIS 10, due to the release into the South ... Dataset Antarc* Antarctic Antarctica Arctic East Antarctica Foraminifera* ice core Sea ice South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Arctic East Antarctica Indian The Antarctic Vostok Station ENVELOPE(106.837,106.837,-78.464,-78.464) 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 Calculated Cibicidoides spp. δ18O COMPCORE Composite Core DEPTH sediment/rock Globigerina bulloides Joides Resolution Leg177 Ocean Drilling Program ODP Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Sea surface temperature summer South Atlantic Ocean SPP1158 Δδ18O water |
spellingShingle |
177-1089 AGE Calculated Cibicidoides spp. δ18O COMPCORE Composite Core DEPTH sediment/rock Globigerina bulloides Joides Resolution Leg177 Ocean Drilling Program ODP Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Sea surface temperature summer South Atlantic Ocean SPP1158 Δδ18O water Cortese, Giuseppe Abelmann, Andrea Gersonde, Rainer Estimation of sea surface temperatures and salinity of ODP Site 177-1089 (Appendix A) |
topic_facet |
177-1089 AGE Calculated Cibicidoides spp. δ18O COMPCORE Composite Core DEPTH sediment/rock Globigerina bulloides Joides Resolution Leg177 Ocean Drilling Program ODP Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Sea surface temperature summer South Atlantic Ocean SPP1158 Δδ18O water |
description |
ODP Site 1089 is optimally located in order to monitor the occurrence of maxima in Agulhas heat and salt spillage from the Indian to the Atlantic Ocean. Radiolarian-based paleotemperature transfer functions allowed to reconstruct the climatic history for the last 450 kyr at this location. A warm sea surface temperature anomaly during Marine Isotope Stage (MIS) 10 was recognized and traced to other oceanic records along the surface branch of the global thermohaline (THC) circulation system, and is particularly marked at locations where a strong interaction between oceanic and atmospheric overturning cells and fronts occurs. This anomaly is absent in the Vostok ice core deuterium, and in oceanic records from the Antarctic Zone. However, it is present in the deuterium excess record from the Vostok ice core, interpreted as reflecting the temperature at the moisture source site for the snow precipitated at Vostok Station. As atmospheric models predict a subtropical Indian source for such moisture, this provides the necessary teleconnection between East Antarctica and ODP Site 1089, as the subtropical Indian is also the source area of the Agulhas Current, the main climate agent at our study location. The presence of the MIS 10 anomaly in the delta13C foraminiferal records from the same core supports its connection to oceanic mechanisms, linking stronger Agulhas spillover intensity to increased productivity in the study area. We suggest, in analogy to modern oceanographic observations, this to be a consequence of a shallow nutricline, induced by eddy mixing and baroclinic tide generation, which are in turn connected to the flow geometry, and intensity, of the Agulhas Current as it flows past the Agulhas Bank. We interpret the intensified inflow of Agulhas Current to the South Atlantic as responding to the switch between lower and higher amplitude in the insolation forcing in the Agulhas Current source area. This would result in higher SSTs in the Cape Basin during the glacial MIS 10, due to the release into the South ... |
format |
Dataset |
author |
Cortese, Giuseppe Abelmann, Andrea Gersonde, Rainer |
author_facet |
Cortese, Giuseppe Abelmann, Andrea Gersonde, Rainer |
author_sort |
Cortese, Giuseppe |
title |
Estimation of sea surface temperatures and salinity of ODP Site 177-1089 (Appendix A) |
title_short |
Estimation of sea surface temperatures and salinity of ODP Site 177-1089 (Appendix A) |
title_full |
Estimation of sea surface temperatures and salinity of ODP Site 177-1089 (Appendix A) |
title_fullStr |
Estimation of sea surface temperatures and salinity of ODP Site 177-1089 (Appendix A) |
title_full_unstemmed |
Estimation of sea surface temperatures and salinity of ODP Site 177-1089 (Appendix A) |
title_sort |
estimation of sea surface temperatures and salinity of odp site 177-1089 (appendix a) |
publisher |
PANGAEA |
publishDate |
2004 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.712940 https://doi.org/10.1594/PANGAEA.712940 |
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: 0.41 m * MAXIMUM DEPTH, sediment/rock: 67.57 m |
long_lat |
ENVELOPE(106.837,106.837,-78.464,-78.464) ENVELOPE(9.893983,9.893983,-40.936333,-40.936333) |
geographic |
Antarctic Arctic East Antarctica Indian The Antarctic Vostok Station |
geographic_facet |
Antarctic Arctic East Antarctica Indian The Antarctic Vostok Station |
genre |
Antarc* Antarctic Antarctica Arctic East Antarctica Foraminifera* ice core Sea ice South Atlantic Ocean |
genre_facet |
Antarc* Antarctic Antarctica Arctic East Antarctica Foraminifera* ice core Sea ice South Atlantic Ocean |
op_source |
Supplement to: Cortese, Giuseppe; Abelmann, Andrea; Gersonde, Rainer (2004): A glacial warm water anomaly in the subantarctic Atlantic Ocean, near the Agulhas Retroflection. Earth and Planetary Science Letters, 222(3-4), 767-778, https://doi.org/10.1016/j.epsl.2004.03.029 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.712940 https://doi.org/10.1594/PANGAEA.712940 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.712940 https://doi.org/10.1016/j.epsl.2004.03.029 |
_version_ |
1766019391083773952 |