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. White, S.M. Hill, T.M. Kennett, J.P. Behl, R.J. Nicholson, C. Interglacial 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 earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (MV0508-16JPC>LATITUDE 34.25>LONGITUDE -119.77) (MV0508-20JPC>LATITUDE 34.215583>LONGITUDE -119.672667) (MV0508-11JPC>LATITUDE 34.250333>LONGITUDE -119.764333) 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 NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : White, S.M. Investigator : Hill, T.M. Investigator : Kennett, J.P. Investigator : Behl, R.J. Investigator : Nicholson, C. 2016-02-02 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/19762 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-assem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-bull.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-pachy.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-pachy.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-uvig.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-bull.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-assem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-bull.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-uvig.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-uvig.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-pachy.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-assem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-assem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-bull.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-pachy.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-pachy.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-uvig.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-bull.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-assem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-bull.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-uvig.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-uvig.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-pachy.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-assem.txt English https://www.ncdc.noaa.gov/paleo/study/19762 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-assem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-bull.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-pachy.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-pachy.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-uvig.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-bull.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-16jpc-assem.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-bull.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-uvig.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-uvig.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-20jpc-pachy.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/white2013/white2013-11jpc-assem.txt White, S.M., T.M. Hill, J.P. Kennett, R.J. Behl, and C. Nicholson2013Millennial-scale variability to 735 ka: High-resolution climate records from Santa Barbara Basin, CAPaleoceanography28213-22610.1002/palo.20022 START YEAR: 737000 cal yr BP * END YEAR: 290500 cal yr BP -119.77 34.215583 -119.672667 34.250333