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Dataset Overview | National Centers for Environmental Information (NCEI)

NOAA/WDS Paleoclimatology - Northwest Atlantic Sediment Data Across the Marine Isotope Stage 5a/4 Boundary

browse graphicPaleoclimatology - Paleoceanography
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoceanography. The data include parameters of paleoceanography with a geographic location of North Atlantic Ocean. The time period coverage is from 85908 to 55600 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
  • Cite as: Thornalley, D.J.R.; Barker, S.; Becker, J.; Hall, I.R.; Knorr, G. (2014-06-05): NOAA/WDS Paleoclimatology - Northwest Atlantic Sediment Data Across the Marine Isotope Stage 5a/4 Boundary. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/f6a3-5721. Accessed [date].
  • Please refer to Credit tab for full citation information.
noaa-ocean-16556
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Distributor NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact Data Center Contact
NOAA World Data Service for Paleoclimatology
828-271-4800
paleo@noaa.gov
Coverage Description Date Range: 85908 cal yr BP to 55600 cal yr BP;
Time Period -83958 to -53650
Spatial Bounding Box Coordinates
West: -76.283333
East: -57.616667
South: 29.933333
North: 33.683333
Spatial Coverage Map
General Documentation
Associated Resources
  • Abrupt changes in deep Atlantic circulation during the transition to full glacial conditions
    • Associated Reference published 2013
      Thornalley, D.J.R., S. Barker, J. Becker, I.R. Hall, and G. Knorr, 2013: Abrupt changes in deep Atlantic circulation during the transition to full glacial conditions. Paleoceanography, 28, 253-262, 10.1002/palo.20025
Publication Dates
  • publication: 2014-06-05
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Data update frequency not available
Supplemental Information
ABSTRACT SUPPLIED BY ORIGINATOR: Six Ocean Drilling Program (ODP) sites, in the Northwest Atlantic have been used to investigate kinematic and chemical changes in the "Western Boundary Undercurrent" (WBUC) during the development of full glacial conditions across the Marine Isotope Stage 5a/4 boundary (~70,000?years ago). Sortable silt mean grain size inline image measurements are employed to examine changes in near bottom flow speeds, together with carbon isotopes measured in benthic foraminifera and % planktic foraminiferal fragmentation as proxies for changes in water-mass chemistry. A depth transect of cores, spanning 1.8–4.6?km depth, allows changes in both the strength and depth of the WBUC to be constrained across millennial scale events. inline image measurements reveal that the flow speed structure of the WBUC during warm intervals (“interstadials”) was comparable to modern (Holocene) conditions. However, significant differences are observed during cold intervals, with higher relative flow speeds inferred for the shallow component of the WBUC (~2?km depth) during all cold “stadial” intervals (including Heinrich Stadial 6), and a substantial weakening of the deep component (~3-4 km) during full glacial conditions. Our results therefore reveal that the onset of full glacial conditions was associated with a regime shift to a shallower mode of circulation (involving Glacial North Atlantic Intermediate Water) that was quantitatively distinct from preceding cold stadial events. Furthermore, our chemical proxy data show that the physical response of the WBUC during the last glacial inception was probably coupled to basin-wide changes in the water-mass composition of the deep Northwest Atlantic.
Purpose Records of past climate and ocean circulation derived from marine sediments. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations.
Dataset Citation
  • Cite as: Thornalley, D.J.R.; Barker, S.; Becker, J.; Hall, I.R.; Knorr, G. (2014-06-05): NOAA/WDS Paleoclimatology - Northwest Atlantic Sediment Data Across the Marine Isotope Stage 5a/4 Boundary. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/f6a3-5721. Accessed [date].
  • 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.
Cited Authors
  • Thornalley, D.J.R.
  • Barker, S.
  • Becker, J.
  • Hall, I.R.
  • Knorr, G.
Originators
  • Thornalley, D.J.R.
  • Barker, S.
  • Becker, J.
  • Hall, I.R.
  • Knorr, G.
Publishers
  • NOAA National Centers for Environmental Information
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Paleoclimate > Ocean/Lake Records
  • Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records
Global Change Master Directory (GCMD) Science Keywords
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleocean > physical properties
  • earth science > paleoclimate > paleocean > oxygen isotopes
  • earth science > paleoclimate > paleocean > carbon isotopes
  • Dansgaard-Oeschger cycles
  • Heinrich Events
Paleoenvironmental Standard Terms (PaST) Thesaurus
  • What: delta 18O; Material: Globigerinoides ruber
  • What: delta 18O; Material: benthic foraminifer
  • What: delta 18O; Material: Cibicidoides sp.
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: delta 13C; Material: Cibicidoides sp.
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: delta 18O; Material: benthic foraminifer
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: age; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: sand; Material: sediment
  • What: delta 13C; Material: Cibicidoides wuellerstorfi
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: depth; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: delta 18O; Material: Globigerinoides ruber
  • What: delta 18O; Material: Cibicidoides wuellerstorfi
  • What: delta 13C; Material: Cibicidoides wuellerstorfi
  • What: foraminifer fragmentation; Material: null
  • What: foraminifer fragmentation; Material: null
  • What: delta 13C; Material: Cibicidoides sp.
  • What: depth; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
  • What: sortable silt mean grain size; Material: null
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Place keywords
  • Ocean > Atlantic Ocean > North Atlantic Ocean > ODP 1061 > LATITUDE 29.933333 > LONGITUDE -73.6
  • Ocean > Atlantic Ocean > North Atlantic Ocean > ODP 1063 > LATITUDE 33.683333 > LONGITUDE -57.616667
  • Ocean > Atlantic Ocean > North Atlantic Ocean > ODP 1055 > LATITUDE 32.783333 > LONGITUDE -76.283333
  • Ocean > Atlantic Ocean > North Atlantic Ocean > Western North Atlantic Ocean > LATITUDE > LONGITUDE
  • Ocean > Atlantic Ocean > North Atlantic Ocean > ODP 1059 > LATITUDE 31.683333 > LONGITUDE -75.416667
  • Ocean > Atlantic Ocean > North Atlantic Ocean > ODP 1060 > LATITUDE 30.766667 > LONGITUDE -74.466667
  • Ocean > Atlantic Ocean > North Atlantic Ocean > ODP 1057 > LATITUDE 32.033333 > LONGITUDE -76.05
Use Constraints
  • Cite as: Thornalley, D.J.R.; Barker, S.; Becker, J.; Hall, I.R.; Knorr, G. (2014-06-05): NOAA/WDS Paleoclimatology - Northwest Atlantic Sediment Data Across the Marine Isotope Stage 5a/4 Boundary. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/f6a3-5721. Accessed [date].
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
  • 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.
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
  • None
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Last Modified: 2023-09-01
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