Age models and stable isotope record of sediment cores from the Atlantic Ocean
The high-resolution delta18O and delta13C records of benthic foraminifera from a 150,000-year long core from the Caribbean Sea indicate that there was generally high delta13C during glaciations and low delta13C during interglaciations. Due to its 1800-m sill depth, the properties of deep water in th...
Main Authors: | , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
1990
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.727184 https://doi.org/10.1594/PANGAEA.727184 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.727184 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.727184 2024-06-02T08:10:30+00:00 Age models and stable isotope record of sediment cores from the Atlantic Ocean Oppo, Delia W Fairbanks, Richard G MEDIAN LATITUDE: 30.701925 * MEDIAN LONGITUDE: -54.085325 * SOUTH-BOUND LATITUDE: 11.650000 * WEST-BOUND LONGITUDE: -80.130000 * NORTH-BOUND LATITUDE: 56.042700 * EAST-BOUND LONGITUDE: -23.231300 * DATE/TIME START: 1971-01-05T00:00:00 * DATE/TIME END: 1981-07-31T00:00:00 1990 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.727184 https://doi.org/10.1594/PANGAEA.727184 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.727184 https://doi.org/10.1594/PANGAEA.727184 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Oppo, Delia W; Fairbanks, Richard G (1990): Atlantic Ocean thermohaline circulation of the last 150,000 years: relationship to climate and atmospheric CO2. Paleoceanography, 5(3), 277-288, https://doi.org/10.1029/PA005i003p00277 81-552A CH8X CHN82-24 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP GLAMAP Glomar Challenger Jean Charcot Lamont-Doherty Earth Observatory Columbia University LDEO Leg81 North Atlantic/PLATEAU PC Piston corer V28 V28-127 Vema Dataset 1990 ftpangaea https://doi.org/10.1594/PANGAEA.72718410.1029/PA005i003p00277 2024-05-07T23:45:53Z The high-resolution delta18O and delta13C records of benthic foraminifera from a 150,000-year long core from the Caribbean Sea indicate that there was generally high delta13C during glaciations and low delta13C during interglaciations. Due to its 1800-m sill depth, the properties of deep water in the Caribbean Sea are similar to those of middepth tropical Atlantic water. During interglaciations, the water filling the deep Caribbean Sea is an admixture of low delta13C Upper Circumpolar Water (UCPW) and high delta13C Upper North Atlantic Deep Water (UNADW). By contrast, only high delta13C UNADW enters during glaciations. Deep ocean circulation changes can influence atmospheric CO2 levels (Broecker and Takahashi, 1985; Boyle, 1988 doi:10.1029/JC093iC12p15701; Keir, 1988 doi:10.1029/PA003i004p00413; Broecker and Peng, 1989 doi:10.1029/GB003i003p00215). By comparing delta13C records of benthic foraminifera from cores lying in Southern Ocean Water, the Caribbean Sea, and at several other Atlantic Ocean sites, the thermohaline state of the Atlantic Ocean (how close it was to a full glacial or full interglacial configuration) is characterized. A continuum of circulation patterns between the glacial and interglacial extremes appears to have existed in the past. Subtracting the deep Pacific (~mean ocean water) delta13C record from the Caribbean delta13C record yields a record which describes large changes in the Atlantic Ocean thermohaline circulation. The delta13C difference varies as the vertical nutrient distribution changes. This new proxy record bears a striking resemblance to the 150,000-year-long atmospheric CO2 record (Barnola et al., 1987 doi:10.1038/329408a0). This favorable comparison between the new proxy record and the atmospheric CO2 record is consistent with Boyle's (1988a) model that vertical nutrient redistribution has driven large atmospheric CO2 changes in the past. Changes in the relative contribution of NADW and Pacific outflow water to the Southern Ocean are also consistent with Broecker and Peng's ... Dataset NADW North Atlantic Deep Water North Atlantic Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Southern Ocean Pacific Charcot ENVELOPE(139.017,139.017,-69.367,-69.367) ENVELOPE(-80.130000,-23.231300,56.042700,11.650000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
81-552A CH8X CHN82-24 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP GLAMAP Glomar Challenger Jean Charcot Lamont-Doherty Earth Observatory Columbia University LDEO Leg81 North Atlantic/PLATEAU PC Piston corer V28 V28-127 Vema |
spellingShingle |
81-552A CH8X CHN82-24 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP GLAMAP Glomar Challenger Jean Charcot Lamont-Doherty Earth Observatory Columbia University LDEO Leg81 North Atlantic/PLATEAU PC Piston corer V28 V28-127 Vema Oppo, Delia W Fairbanks, Richard G Age models and stable isotope record of sediment cores from the Atlantic Ocean |
topic_facet |
81-552A CH8X CHN82-24 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP GLAMAP Glomar Challenger Jean Charcot Lamont-Doherty Earth Observatory Columbia University LDEO Leg81 North Atlantic/PLATEAU PC Piston corer V28 V28-127 Vema |
description |
The high-resolution delta18O and delta13C records of benthic foraminifera from a 150,000-year long core from the Caribbean Sea indicate that there was generally high delta13C during glaciations and low delta13C during interglaciations. Due to its 1800-m sill depth, the properties of deep water in the Caribbean Sea are similar to those of middepth tropical Atlantic water. During interglaciations, the water filling the deep Caribbean Sea is an admixture of low delta13C Upper Circumpolar Water (UCPW) and high delta13C Upper North Atlantic Deep Water (UNADW). By contrast, only high delta13C UNADW enters during glaciations. Deep ocean circulation changes can influence atmospheric CO2 levels (Broecker and Takahashi, 1985; Boyle, 1988 doi:10.1029/JC093iC12p15701; Keir, 1988 doi:10.1029/PA003i004p00413; Broecker and Peng, 1989 doi:10.1029/GB003i003p00215). By comparing delta13C records of benthic foraminifera from cores lying in Southern Ocean Water, the Caribbean Sea, and at several other Atlantic Ocean sites, the thermohaline state of the Atlantic Ocean (how close it was to a full glacial or full interglacial configuration) is characterized. A continuum of circulation patterns between the glacial and interglacial extremes appears to have existed in the past. Subtracting the deep Pacific (~mean ocean water) delta13C record from the Caribbean delta13C record yields a record which describes large changes in the Atlantic Ocean thermohaline circulation. The delta13C difference varies as the vertical nutrient distribution changes. This new proxy record bears a striking resemblance to the 150,000-year-long atmospheric CO2 record (Barnola et al., 1987 doi:10.1038/329408a0). This favorable comparison between the new proxy record and the atmospheric CO2 record is consistent with Boyle's (1988a) model that vertical nutrient redistribution has driven large atmospheric CO2 changes in the past. Changes in the relative contribution of NADW and Pacific outflow water to the Southern Ocean are also consistent with Broecker and Peng's ... |
format |
Dataset |
author |
Oppo, Delia W Fairbanks, Richard G |
author_facet |
Oppo, Delia W Fairbanks, Richard G |
author_sort |
Oppo, Delia W |
title |
Age models and stable isotope record of sediment cores from the Atlantic Ocean |
title_short |
Age models and stable isotope record of sediment cores from the Atlantic Ocean |
title_full |
Age models and stable isotope record of sediment cores from the Atlantic Ocean |
title_fullStr |
Age models and stable isotope record of sediment cores from the Atlantic Ocean |
title_full_unstemmed |
Age models and stable isotope record of sediment cores from the Atlantic Ocean |
title_sort |
age models and stable isotope record of sediment cores from the atlantic ocean |
publisher |
PANGAEA |
publishDate |
1990 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.727184 https://doi.org/10.1594/PANGAEA.727184 |
op_coverage |
MEDIAN LATITUDE: 30.701925 * MEDIAN LONGITUDE: -54.085325 * SOUTH-BOUND LATITUDE: 11.650000 * WEST-BOUND LONGITUDE: -80.130000 * NORTH-BOUND LATITUDE: 56.042700 * EAST-BOUND LONGITUDE: -23.231300 * DATE/TIME START: 1971-01-05T00:00:00 * DATE/TIME END: 1981-07-31T00:00:00 |
long_lat |
ENVELOPE(139.017,139.017,-69.367,-69.367) ENVELOPE(-80.130000,-23.231300,56.042700,11.650000) |
geographic |
Southern Ocean Pacific Charcot |
geographic_facet |
Southern Ocean Pacific Charcot |
genre |
NADW North Atlantic Deep Water North Atlantic Southern Ocean |
genre_facet |
NADW North Atlantic Deep Water North Atlantic Southern Ocean |
op_source |
Supplement to: Oppo, Delia W; Fairbanks, Richard G (1990): Atlantic Ocean thermohaline circulation of the last 150,000 years: relationship to climate and atmospheric CO2. Paleoceanography, 5(3), 277-288, https://doi.org/10.1029/PA005i003p00277 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.727184 https://doi.org/10.1594/PANGAEA.727184 |
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.72718410.1029/PA005i003p00277 |
_version_ |
1800756379070234624 |