noaa-ocean-19521
Brazil Margin Deglacial Benthic Stable Isotope Data
Lund, D.C.; Tessin, A.C.; Hoffman, J.L.; Schmittner, A.
Brazil Margin Deglacial Benthic Stable Isotope Data
2015-11-05
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/19521
Investigator
D.C.
Lund
Investigator
A.C.
Tessin
Investigator
J.L.
Hoffman
Investigator
A.
Schmittner
earth science
paleoclimate
paleoceanography
age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
delta 13C,Cibicidoides wuellerstorfi,one standard deviation,per mil VPDB,null,paleoceanography,null,null,N,>250 micron
earth science
paleoclimate
paleoceanography
delta 13C,Cibicidoides wuellerstorfi,null,per mil VPDB,null,paleoceanography,anomalized,null,N,>250 micron
earth science
paleoclimate
paleoceanography
delta 18O,Cibicidoides wuellerstorfi,null,per mil VPDB,null,paleoceanography,null,null,N,>250 micron
earth science
paleoclimate
paleoceanography
delta 18O,Cibicidoides wuellerstorfi,one standard deviation,per mil VPDB,null,paleoceanography,null,null,N,>250 micron
earth science
paleoclimate
paleoceanography
delta 13C,Cibicidoides wuellerstorfi,null,per mil VPDB,null,paleoceanography,null,null,N,>250 micron
earth science
paleoclimate
paleoceanography
notes,null,null,null,null,paleoceanography,null,null,N,Number of Analyses
earth science
paleoclimate
paleoceanography
delta 13C,Cibicidoides wuellerstorfi,one standard error,per mil VPDB,null,paleoceanography,null,null,N,>250 micron
earth science
paleoclimate
paleoceanography
depth,null,null,centimeter,null,paleoceanography,null,null,N,null
earth science
paleoclimate
paleoceanography
delta 18O,Cibicidoides wuellerstorfi,null,per mil VPDB,null,paleoceanography,anomalized,null,N,>250 micron
earth science
paleoclimate
paleoceanography
delta 18O,Cibicidoides wuellerstorfi,one standard error,per mil VPDB,null,paleoceanography,null,null,N,>250 micron
earth science
paleoclimate
paleoceanography
number of samples,null,null,null,null,paleoceanography,null,null,N,Number of Analyses
earth science
paleoclimate
paleocean
oxygen isotopes
earth science
paleoclimate
paleocean
carbon isotopes
geoscientificInformation
Meridional Overturning Circulation (MOC)
101063 cal yr BP
288 cal yr BP
Complete
-29.7833
-26.68
-46.63
-43.5833
-3924
-441
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-33GGC>LATITUDE -27.5667>LONGITUDE -46.1833
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-42JPC>LATITUDE -27.7667>LONGITUDE -46.0333
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-20JPC>LATITUDE -28.64>LONGITUDE -45.54
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-63GGC>LATITUDE -28.36>LONGITUDE -45.84
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-14GGC>LATITUDE -26.68>LONGITUDE -46.5
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-17JPC>LATITUDE -27.7>LONGITUDE -46.49
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-36GGC>LATITUDE -27.5167>LONGITUDE -46.4667
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-90GGC>LATITUDE -27.35>LONGITUDE -46.63
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-30GGC>LATITUDE -28.1333>LONGITUDE -46.0667
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-125GGC>LATITUDE -29.5333>LONGITUDE -45.0833
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-22GGC>LATITUDE -29.7833>LONGITUDE -43.5833
Ocean
Atlantic Ocean
South Atlantic Ocean
KNR159-5-78GGC>LATITUDE -27.4833>LONGITUDE -46.3333
None
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
D.C. Lund, A.C. Tessin, J.L. Hoffman, A. Schmittner
2015
Southwest Atlantic water mass evolution during the last deglaciation
Paleoceanography
30
5
477-494
10.1002/2014PA002657
http://onlinelibrary.wiley.com/doi/10.1002/2014PA002657/full
The rise in atmospheric CO2 during Heinrich Stadial 1 (HS1; 14.5-17.5 kyr B.P.) may have been driven by the release of carbon from the abyssal ocean. Model simulations suggest that wind-driven upwelling in the Southern Ocean can liberate 13C-depleted carbon from the abyss, causing atmospheric CO2 to increase and the d13C of CO2 to decrease. One prediction of the Southern Ocean hypothesis is that water mass tracers in the deep South Atlantic should register a circulation response early in the deglaciation. Here we test this idea using a depth transect of 12 cores from the Brazil Margin. We show that records below 2300 m remained 13C-depleted until 15 kyr B.P. or later, indicating that the abyssal South Atlantic was an unlikely source of light carbon to the atmosphere during HS1. Benthic d18O results are consistent with abyssal South Atlantic isolation until 15 kyr B.P., in contrast to shallower sites. The depth dependent timing of the d18O signal suggests that correcting d18O for ice volume is problematic on glacial terminations. New data from 2700 to 3000 m show that the deep SW Atlantic was isotopically distinct from the abyss during HS1. As a result, we find that mid-depth d13C minima were most likely driven by an abrupt drop in d13C of northern component water. Low d13C at the Brazil Margin also coincided with an ~80 per mil decrease in D14C. Our results are consistent with a weakening of the Atlantic meridional overturning circulation and point toward a northern hemisphere trigger for the initial rise in atmospheric CO2 during HS1.
STUDY NOTES: Benthic foraminiferal (Cibicidoides wuellerstorfi) stable isotope (d18O and d13C) data from marine sediment cores collected on the Brazil Margin, Northeast Atlantic Ocean, for the deglacial interval.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015jpc20.txt
Data File; Core KNR159-5-20JPC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015matrix18o.txt
Data File; Water Depth vs. Time d18O Matrix
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015ggc30.txt
Data File; Core KNR159-5-30GGC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015ggc36.txt
Data File; Core KNR159-5-36GGC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015ggc63.txt
Data File; Core KNR159-5-63GGC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015matrix13c-anom.txt
Data File; Water Depth vs. Time d13C Anomaly Matrix
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015ggc90.txt
Data File; Core KNR159-5-90GGC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015ggc125.txt
Data File; Core KNR159-5-125GGC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015ggc14.txt
Data File; Core KNR159-5-14GGC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015jpc17.txt
Data File; Core KNR159-5-17JPC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015matrix13c.txt
Data File; Water Depth vs. Time d13C Matrix
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015jpc42.txt
Data File; Core KNR159-5-42JPC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015ggc78.txt
Data File; Core KNR159-5-78GGC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015ggc33.txt
Data File; Core KNR159-5-33GGC Stable Isotope Data
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015matrix18o-anom.txt
Data File; Water Depth vs. Time d18O Anomaly Matrix
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/lund2015/lund2015ggc22.txt
Data File; Core KNR159-5-22GGC Stable Isotope Data
USA/NOAA
DIF
Version 9.8.4
2019-06-06
2019-06-06