noaa-ocean-19762 Santa Barbara Basin Stable Isotope and Foraminiferal Assemblage Data to 735 ka White, S.M.; Hill, T.M.; Kennett, J.P.; Behl, R.J.; Nicholson, C. Santa Barbara Basin Stable Isotope and Foraminiferal Assemblage Data to 735 ka 2016-02-02 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19762 Investigator S.M. White Investigator T.M. Hill Investigator J.P. Kennett Investigator R.J. Behl Investigator C. Nicholson earth science paleoclimate paleoceanography foraminiferal index,null,null,percent,null,paleoceanography,null,null,N,#N. pachyderma right coiling / (# N. pachyderma right coiling + # N. pachyderma left coiling) earth science paleoclimate paleoceanography identified foraminifer,null,null,count per cubic centimeter,null,paleoceanography,null,null,N,Turborotalia quinqueloba earth science paleoclimate paleoceanography delta 13C,Uvigerina peregrina,null,per mil PDB,null,paleoceanography,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleoceanography delta 13C,Neogloboquadrina pachyderma sinistral,null,per mil PDB,null,paleoceanography,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleoceanography Neogloboquadrina pachyderma sinistral,null,null,count per cubic centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography identified foraminifer,null,null,count per cubic centimeter,null,paleoceanography,null,null,N,G. ruber + O. universa + N. dutertrei + G. inflata earth science paleoclimate paleoceanography foraminiferal index,null,null,percent,null,paleoceanography,null,null,N,Neogloboquadrina pachyderma right coiling / (Neogloboquadrina pachyderma right coiling + Neogloboquadrina pachyderma left coiling) earth science paleoclimate paleoceanography notes,null,null,null,null,paleoceanography,null,null,C,core name earth science paleoclimate paleoceanography notes,null,null,null,null,paleoceanography,null,null,C,core section earth science paleoclimate paleoceanography Neogloboquadrina pachyderma dextral,null,null,count per cubic centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 13C,Globigerina bulloides,null,per mil PDB,null,paleoceanography,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleoceanography total foraminifers,null,null,count,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 18O,Neogloboquadrina pachyderma sinistral,null,per mil PDB,null,paleoceanography,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleoceanography delta 18O,Uvigerina peregrina,null,per mil PDB,null,paleoceanography,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleoceanography Globigerina bulloides,null,null,count per cubic centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 18O,Globigerina bulloides,null,per mil PDB,null,paleoceanography,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleoceanography depth at sample end,null,null,centimeter,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 carbon isotopes earth science paleoclimate paleocean population abundance geoscientificInformation Interglacial 737000 cal yr BP 290500 cal yr BP Complete 34.215583 34.250333 -119.77 -119.672667 -191 -129 Ocean Pacific Ocean North Pacific Ocean MV0508-16JPC>LATITUDE 34.25>LONGITUDE -119.77 Ocean Pacific Ocean Eastern Pacific Ocean MV0508-20JPC>LATITUDE 34.215583>LONGITUDE -119.672667 Ocean Pacific Ocean Eastern Pacific Ocean MV0508-11JPC>LATITUDE 34.250333>LONGITUDE -119.764333 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 White, S.M., T.M. Hill, J.P. Kennett, R.J. Behl, and C. Nicholson 2013 Paleoceanography 28 213-226 10.1002/palo.20022

Determining the ultimate cause and effect of millennial-scale climate variability remains an outstanding problem in paleoceanography, partly due to the lack of high-resolution records predating the last glaciation. Recent cores from Santa Barbara Basin provide ~2500–5700 year “windows” of climate with ~10–50 year resolution. Ages for three cores, determined by seismic stratigraphic correlation, oxygen isotope stratigraphy, and biostratigraphy, date to ~293 ka (MIS 8), ~450 ka (MIS 12), and ~735 ka (MIS 18). These records sample the Late Pleistocene, during which the 100 kyr cycle strengthened and the magnitude of glacial-interglacial cyclicity increased. Thus, these records provide a test of the dependence of millennial-scale behavior on variations in glacial-interglacial cyclicity. The stable isotopic (d18O) composition of planktonic foraminifera shows millennial-scale variability in all three intervals, with similar characteristics (duration, cyclicity) to those previously documented during MIS 3 at this site. Stadial G. bulloides d18O values are 2.75–1.75‰ (average 2.25‰) and interstadial values are 1.75–0.5‰ (average 1‰), with rapid (decadal-scale) interstadial and stadial initiations of 1-2‰, as in MIS 3. Interstadials lasted ~250–1600 years and occurred every ~650–1900 years. Stadial paleotemperatures were 3.5–9.5°C and interstadial paleotemperatures were 7.5–13°C. Upwelling, evidenced by planktonic foraminiferal assemblages and d13C, increased during interstadials, similar to MIS 3; high productivity during some stadials was reminiscent of the Last Glacial Maximum. This study builds upon previous records in showing that millennial-scale shifts were an inherent feature of Northern Hemisphere glacial climates since 735 ka, and they remained remarkably constant in the details of their amplitude, cyclicity, and temperature variability. STUDY NOTES: Provided Keywords: stadial, interstadial, glacial

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