noaa-ocean-19339 Gardar Drift Stable Isotope and Sediment Data since ~300 ka Elmore, A.C.; Wright, J.D.; Chalk, T.B. Gardar Drift Stable Isotope and Sediment Data since ~300 ka 2015-10-08 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19339 Investigator A.C. Elmore Investigator J.D. Wright Investigator T.B. Chalk earth science paleoclimate paleoceanography delta 18O,Globigerina bulloides,null,per mil PDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 13C,Globigerina bulloides,null,per mil PDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 18O,Cibicidoides wuellerstorfi,null,per mil PDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 13C,Cibicidoides wuellerstorfi,null,per mil PDB,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography calcium carbonate,sediment,null,weight percent,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography depth,null,null,centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleocean oxygen isotopes earth science paleoclimate paleocean lithology earth science paleoclimate paleocean carbon isotopes geoscientificInformation 309460 cal yr BP 0 cal yr BP Complete 55.52 56.233333 -27.65 -26.53 -3305 -2707 Ocean Atlantic Ocean North Atlantic Ocean KN166-14 3GGC>LATITUDE 55.52>LONGITUDE -26.53 Ocean Atlantic Ocean North Atlantic Ocean KN166-14 11JPC>LATITUDE 56.233333>LONGITUDE -27.65 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

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Boulder CO 80305-3328 USA online ASCII Elmore, A.C., J.D. Wright, and T.B. Chalk 2015 Palaeogeography, Palaeoclimatology, Palaeoecology 440 551-563 10.1016/j.palaeo.2015.09.042

Benthic foraminiferal stable isotopic records from a transect of sediment cores south of the Iceland-Scotland Ridge reveal that the penetration depth of Iceland-Scotland Overflow Water (ISOW) varied on orbital timescales with precessional pacing over the past ~ 200 kyr. Similar, higher benthic foraminiferal d13C values (~ 1.0 ‰) were recorded at all transect sites downstream of the Iceland-Scotland Ridge during interglacial periods (Marine Isotope Chrons 5 and 1), indicating a deeply penetrating ISOW. During glacial periods (Marine Isotope Chrons 6, 4, and 2), benthic foraminiferal d13C values from the deeper (2700-3300 m), southern sites within this transect were significantly lower (~ 0.5 ‰) than values from the northern (shallower) portion of the transect (~ 1.0 ‰), reflecting a shoaling of ISOW and greater influence of glacial Southern Component Water (SCW) in the deep Northeast Atlantic. Particularly during intermediate climate states, ISOW strength is driven by precesional cycles, superimposed on the large-scale glacial-interglacial ISOW variability. Millennial-scale variability in the penetration of ISOW, likely caused by high-frequency Heinrich and Dansgaard-Oeschger Events, is most pronounced during intermediate climate states. STUDY NOTES: Provided Keywords: North Atlantic Deep Water (NADW), Insolation

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/elmore2015-p3/elmore2015-p3-11jpc.txt Formatted Text File; KN166-14 11JPC Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/elmore2015-p3/elmore2015-p3-3ggc.txt Formatted Text File; KN166-14 3GGC Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11