Stable oxygen isotope record of benthic foraminifera from the tropical Atlantic
Benthic foraminiferal oxygen isotope ratios from two sediment cores recovered at 426 and 1299 m water depth in the eastern and western tropical Atlantic show that a slowdown of the thermohaline circulation (THC) during Heinrich event H1 and the Younger Dryas was accompanied by rapid and intense warm...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.737914 2023-05-15T17:34:47+02:00 Stable oxygen isotope record of benthic foraminifera from the tropical Atlantic Rühlemann, Carsten Mulitza, Stefan Lohmann, Gerrit Paul, André Prange, Matthias Wefer, Gerold MEDIAN LATITUDE: -3.917180 * MEDIAN LONGITUDE: -11.480944 * SOUTH-BOUND LATITUDE: -11.920770 * WEST-BOUND LONGITUDE: -61.243333 * NORTH-BOUND LATITUDE: 12.090000 * EAST-BOUND LONGITUDE: 13.400250 * DATE/TIME START: 1996-04-19T00:00:00 * DATE/TIME END: 1997-09-04T06:05:00 2004-05-07 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.737914 https://doi.org/10.1594/PANGAEA.737914 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.737914 https://doi.org/10.1594/PANGAEA.737914 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Rühlemann, Carsten; Mulitza, Stefan; Lohmann, Gerrit; Paul, André; Prange, Matthias; Wefer, Gerold (2004): Intermediate depth warming in the tropical Atlantic related to weakened thermohaline circulation: Combining paleoclimate and modeling data for the last deglaciation. Paleoceanography, 19(1), PA1025, https://doi.org/10.1029/2003PA000948 175-1078C Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences DRILL Drilling/drill rig Gravity corer (Kiel type) Joides Resolution Leg175 M35/1 M35003-4 MARUM Meteor (1986) SL Dataset 2004 ftpangaea https://doi.org/10.1594/PANGAEA.737914 https://doi.org/10.1029/2003PA000948 2023-01-20T07:31:45Z Benthic foraminiferal oxygen isotope ratios from two sediment cores recovered at 426 and 1299 m water depth in the eastern and western tropical Atlantic show that a slowdown of the thermohaline circulation (THC) during Heinrich event H1 and the Younger Dryas was accompanied by rapid and intense warming of intermediate depth waters. Millennial-scale covariations of low paleosalinities in the subpolar North Atlantic with decreased benthic oxygen isotope ratios in the eastern tropical Atlantic throughout the past 10,000 years suggest that THC weakening might be related to middepth warming during the Holocene period as well. Climate model experiments simulating a strong reduction of the THC in the Atlantic Ocean under present-day and glacial conditions reveal that the increase of temperature in the middepth tropical and South Atlantic is a common feature for both climatic states, caused by a reduced ventilation of cold intermediate and deep waters in conjunction with downward mixing of heat from the thermocline. From the similarity of the paleoclimatic records with the model simulations, we infer that the characteristic pattern of temperature change in the Atlantic Ocean related to weakened thermohaline circulation can serve as an indicator of present-day and future THC slowdown. Dataset North Atlantic South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-61.243333,13.400250,12.090000,-11.920770) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
175-1078C Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences DRILL Drilling/drill rig Gravity corer (Kiel type) Joides Resolution Leg175 M35/1 M35003-4 MARUM Meteor (1986) SL |
spellingShingle |
175-1078C Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences DRILL Drilling/drill rig Gravity corer (Kiel type) Joides Resolution Leg175 M35/1 M35003-4 MARUM Meteor (1986) SL Rühlemann, Carsten Mulitza, Stefan Lohmann, Gerrit Paul, André Prange, Matthias Wefer, Gerold Stable oxygen isotope record of benthic foraminifera from the tropical Atlantic |
topic_facet |
175-1078C Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences DRILL Drilling/drill rig Gravity corer (Kiel type) Joides Resolution Leg175 M35/1 M35003-4 MARUM Meteor (1986) SL |
description |
Benthic foraminiferal oxygen isotope ratios from two sediment cores recovered at 426 and 1299 m water depth in the eastern and western tropical Atlantic show that a slowdown of the thermohaline circulation (THC) during Heinrich event H1 and the Younger Dryas was accompanied by rapid and intense warming of intermediate depth waters. Millennial-scale covariations of low paleosalinities in the subpolar North Atlantic with decreased benthic oxygen isotope ratios in the eastern tropical Atlantic throughout the past 10,000 years suggest that THC weakening might be related to middepth warming during the Holocene period as well. Climate model experiments simulating a strong reduction of the THC in the Atlantic Ocean under present-day and glacial conditions reveal that the increase of temperature in the middepth tropical and South Atlantic is a common feature for both climatic states, caused by a reduced ventilation of cold intermediate and deep waters in conjunction with downward mixing of heat from the thermocline. From the similarity of the paleoclimatic records with the model simulations, we infer that the characteristic pattern of temperature change in the Atlantic Ocean related to weakened thermohaline circulation can serve as an indicator of present-day and future THC slowdown. |
format |
Dataset |
author |
Rühlemann, Carsten Mulitza, Stefan Lohmann, Gerrit Paul, André Prange, Matthias Wefer, Gerold |
author_facet |
Rühlemann, Carsten Mulitza, Stefan Lohmann, Gerrit Paul, André Prange, Matthias Wefer, Gerold |
author_sort |
Rühlemann, Carsten |
title |
Stable oxygen isotope record of benthic foraminifera from the tropical Atlantic |
title_short |
Stable oxygen isotope record of benthic foraminifera from the tropical Atlantic |
title_full |
Stable oxygen isotope record of benthic foraminifera from the tropical Atlantic |
title_fullStr |
Stable oxygen isotope record of benthic foraminifera from the tropical Atlantic |
title_full_unstemmed |
Stable oxygen isotope record of benthic foraminifera from the tropical Atlantic |
title_sort |
stable oxygen isotope record of benthic foraminifera from the tropical atlantic |
publisher |
PANGAEA |
publishDate |
2004 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.737914 https://doi.org/10.1594/PANGAEA.737914 |
op_coverage |
MEDIAN LATITUDE: -3.917180 * MEDIAN LONGITUDE: -11.480944 * SOUTH-BOUND LATITUDE: -11.920770 * WEST-BOUND LONGITUDE: -61.243333 * NORTH-BOUND LATITUDE: 12.090000 * EAST-BOUND LONGITUDE: 13.400250 * DATE/TIME START: 1996-04-19T00:00:00 * DATE/TIME END: 1997-09-04T06:05:00 |
long_lat |
ENVELOPE(-61.243333,13.400250,12.090000,-11.920770) |
genre |
North Atlantic South Atlantic Ocean |
genre_facet |
North Atlantic South Atlantic Ocean |
op_source |
Supplement to: Rühlemann, Carsten; Mulitza, Stefan; Lohmann, Gerrit; Paul, André; Prange, Matthias; Wefer, Gerold (2004): Intermediate depth warming in the tropical Atlantic related to weakened thermohaline circulation: Combining paleoclimate and modeling data for the last deglaciation. Paleoceanography, 19(1), PA1025, https://doi.org/10.1029/2003PA000948 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.737914 https://doi.org/10.1594/PANGAEA.737914 |
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.737914 https://doi.org/10.1029/2003PA000948 |
_version_ |
1766133734434668544 |