# High-resolution (decadal-scale) deglacial planktonic oxygen isotope records from the Gulf of Alaska #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/26630 # Description: NOAA Landing Page # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/praetorius2014/praetorius2014-agecontrol.txt # Description: NOAA location of the template # # Data_Type: Paleoceanography # # Dataset_DOI: # # Parameter_Keywords: oxygen isotopes, age control #--------------------------------------- # Contribution_Date # Date: 2019-04-19 #--------------------------------------- # File_Last_Modified_Date # Date: 2019-04-19 #--------------------------------------- # Title # Study_Name: High-resolution (decadal-scale) deglacial planktonic oxygen isotope records from the Gulf of Alaska #--------------------------------------- # Investigators # Investigators: Praetorius, Summer K.; Mix, Alan C. #--------------------------------------- # Description_Notes_and_Keywords # Description: Gulf of Alaska planktonic oxygen isotope records. The data for Neogloboquadrina pachyderma sinistral (Nps) and Globigerina bulloides (Gb) for each of the three core sites is tabulated in separate excel sheets, along with the composite records on the original and tuned age models. Data is listed as depth in core. The age controls based on the calibrated radiocarbon dates and the age controls for the tuned age model are listed in separate excel sheets. No tuning was applied to the age model of EW0408-85JC for the composite records presented here. Marine reservoir ages applied to the Marine13 radiocarbon calibration are 595 + 50 yrs for EW0408-66JC, 735 + 50 yrs for EW0408-26JC, and 800 + 50 yrs for EW0408-85JC. Data from core EW0408-85JC are previously published in Davies et al. (2011). The d18O of core EW0408-66JC was corrected with an offset of +0.3 o/oo from 4-11 ka and +0.4 o/oo from 11-13.5 ka in order to adjust for differences in the d18O of seawater (related to salinity) between sites. Data was linearly interpolated on a 25 yr timestep to make the composite records. # Provided Keywords: North Pacific, deglacial, abrupt climate change #--------------------------------------- # Publication # Authors: Praetorius, S.K. and A.C. Mix # Published_Date_or_Year: 2014 # Published_Title: Synchronization of North Pacific and Greenland climates preceded abrupt deglacial warming # Journal_Name: Science # Volume: 345 # Edition: # Issue: 10.1126/science.1252000 # Pages: 444-448 # Report_Number: # DOI: # Online_Resource: # Full_Citation: # Abstract: Some proposed mechanisms for transmission of major climate change events between the North Pacific and North Atlantic predict opposing patterns of variations; others suggest synchronization. Resolving this conflict has implications for regulation of poleward heat transport and global climate change. New multidecadal-resolution foraminiferal oxygen isotope records from the Gulf of Alaska (GOA) reveal sudden shifts between intervals of synchroneity and asynchroneity with the North Greenland Ice Core Project (NGRIP) d18O record over the past 18,000 years. Synchronization of these regions occurred 15,500 to 11,000 years ago, just prior to and throughout the most abrupt climate transitions of the last 20,000 years, suggesting that dynamic coupling of North Pacific and North Atlantic climates may lead to critical transitions in Earth's climate system. #--------------------------------------- # Publication # Authors: Davies, M., A. Mix, J. Stoner, J. Addison, J. Jaeger, B. Finney, and J. Wiest # Published_Date_or_Year: 2011 # Published_Title: The deglacial transition on the southeastern Alaska Margin: Meltwater input, sea level rise, marine productivity, and sedimentary anoxia # Journal_Name: Paleoceanography # Volume: 26 # Edition: # Issue: 10.1029/2010PA002051 # Pages: # Report_Number: PA2223 # DOI: # Online_Resource: # Full_Citation: # Abstract: #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation # Grant: AGS-0602395 #--------------------------------------- # Site_Information # Site_Name: EW0408-26TC/JC, 66JC, 85JC # Location: Gulf of Alaska # Country: # Northernmost_Latitude: 59.555 # Southernmost_Latitude: 56.96 # Easternmost_Longitude: -136.43 # Westernmost_Longitude: -144.1535 # Elevation: #--------------------------------------- # Data_Collection # Collection_Name: EW0408-26-66-85 AgeControl Praetorius2014 # First_Year: 18170 # Last_Year: 1500 # Time_Unit: cal yr BP # Core_Length: # Notes: No tuned age model was constructed for EW0408-85JC. Radiocarbon date from core EW0408-85JC from Davies et al., 2011. For cores EW0408-66JC and EW0408-26JC, most of the age controls were adopted from the original constant marine reservoir age-corrected radiocarbon dates, with a few adjusted age control points based on tied d18O stratigraphies (to NGRIP d18O) - in bold values. NAN values reflect areas that allowed for linear interpolation between age controls #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## Core sample identification,,,,,paleoceanography,,,C,core name ## Depth depth,,,meter,,paleoceanography,,,N,midpoint depth in core ## Age age,planktic foraminifer,,calendar kiloyear before present,,paleoceanography,,accelerator mass spectrometry,N,calibrated radiocarbon age; constant marine reservoir ages applied; calibrated using Marine13 ## tuned_age_control age,,,calendar kiloyear before present,,paleoceanography,,,N,age controls used to construct the d18O-tuned age model; NAN values on cores with tuned age models reflect areas that allowed for linear interpolation between age controls #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NAN Core Depth Age tuned_age_control EW0408-85JC 0.260 1.50 NAN EW0408-85JC 1.040 2.96 NAN EW0408-85JC 1.540 3.51 NAN EW0408-85JC 2.060 3.91 NAN EW0408-85JC 2.540 4.81 NAN EW0408-85JC 3.040 5.45 NAN EW0408-85JC 3.540 6.43 NAN EW0408-85JC 4.050 8.05 NAN EW0408-85JC 4.550 8.74 NAN EW0408-85JC 5.050 9.25 NAN EW0408-85JC 5.550 10.00 NAN EW0408-85JC 5.750 10.39 NAN EW0408-85JC 5.900 10.83 NAN EW0408-85JC 6.040 10.95 NAN EW0408-85JC 6.090 11.20 NAN EW0408-85JC 6.200 11.59 NAN EW0408-85JC 6.300 12.05 NAN EW0408-85JC 6.400 12.33 NAN EW0408-85JC 6.445 12.64 NAN EW0408-85JC 6.495 13.77 NAN EW0408-85JC 6.540 13.89 NAN EW0408-85JC 6.600 14.28 NAN EW0408-85JC 6.700 14.47 NAN EW0408-85JC 6.750 14.68 NAN EW0408-85JC 6.800 14.96 NAN EW0408-85JC 6.900 15.57 NAN EW0408-85JC 7.040 16.32 NAN EW0408-85JC 7.260 16.75 NAN EW0408-85JC 7.540 17.11 NAN EW0408-85JC 8.040 17.27 NAN EW0408-85JC 9.040 17.33 NAN EW0408-85JC 10.030 17.37 NAN EW0408-85JC 10.530 17.40 NAN EW0408-85JC 11.030 17.47 NAN EW0408-66JC 0.105 4.56 4.56 EW0408-66JC 0.530 8.37 8.37 EW0408-66JC 0.650 9.13 9.13 EW0408-66JC 0.850 11.53 11.61 EW0408-66JC 1.100 11.71 11.71 EW0408-66JC 1.510 11.75 11.75 EW0408-66JC 2.150 12.13 12.13 EW0408-66JC 3.050 12.19 12.19 EW0408-66JC 3.550 12.20 12.20 EW0408-66JC 4.050 12.37 NAN EW0408-66JC 4.550 12.44 NAN EW0408-66JC 5.650 12.59 NAN EW0408-66JC 6.050 12.66 NAN EW0408-66JC 7.050 12.77 12.57 EW0408-66JC 7.590 12.89 12.70 EW0408-66JC 8.050 12.98 12.83 EW0408-66JC 8.600 13.13 13.13 EW0408-66JC 9.045 13.23 13.23 EW0408-66JC 12.730 13.41 13.41 EW0408-66JC 13.705 13.56 13.56 EW0408-26JC 0.010 13.41 13.55 EW0408-26JC 0.225 NAN 13.70 EW0408-26JC 0.455 14.00 14.00 EW0408-26JC 1.510 14.61 14.61 EW0408-26JC 1.805 14.67 14.67 EW0408-26JC 2.905 15.69 15.69 EW0408-26JC 4.805 17.60 17.60 EW0408-26JC 5.000 17.68 17.68 EW0408-26JC 8.910 18.17 18.17