# Kazusa Group, Central Japan Pleistocene Biomarker Data and Alkenone SST #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/32152 # Description: NOAA Landing Page # Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/kajita2021/kajita2021.txt # Description: NOAA location of the template # # Original_Source_URL: # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Data Type: Paleoceanography # # Dataset DOI: # # Parameter_Keywords: biomarkers, reconstruction #-------------------- # Contribution_Date # Date: 2020-12-28 #-------------------- # File_Last_Modified_Date # Date: 2020-12-28 #-------------------- # Title # Study_Name: Kazusa Group, Central Japan Pleistocene Biomarker Data and Alkenone SST #-------------------- # Investigators # Investigators: Kajita, H.; Maeda, A.; Utsunomiya, M.; Yoshimura, T.; Ohkouchi, N.; Suzuki, A.; Kawahata, H. #-------------------- # Description_Notes_and_Keywords # Description: Biomarker (alkenone and n-alkanes) data and alkenone SST reconstruction from the rock outcrop of the Kazusa Group, Boso Peninsula, central Japan, for the Pleistocene. # # Duplicate measurements for sample S29 # Sample ID UK37 UK37-SST(C) ACL CPI C/N # S-29 0.912 26.3 30.6 4.91 7.7 # S-29-2 0.893 25.7 30.4 5.09 8.1 # S-29-3 0.912 26.3 30.4 4.89 8.4 # S-29-4 0.911 26.3 30.7 4.72 9.3 # S-29-5 0.898 25.9 30.5 3.96 9.4 # S-29-6 0.899 25.9 30.6 4.27 8.4 # Average 0.904 26.1 30.6 4.64 8.56 # 1S 0.008 0.254 0.123 0.434 0.690 # S-29-7 0.943 27.2 30.4 4.96 11.0 # S-29-8 0.916 26.4 30.8 2.36 11.7 # # # Mg/Ca-UK'37 temperature comparison # Location Sample ID MIS UK'37-T Mg/Ca-T # (Alkenone) (G. bulloides) # Otadai F. S-29 33 26.1 23.3 # Otadai F. S-32 33 26.5 22.5 # Otadai F. S-24 32 23.6 21.9 # Otadai F. S-10 31 25.7 24.8 # Otadai F. S-26 30 24.3 19.9 # #-------------------- # Publication # Authors: Hiroto Kajita, Ayumi Maeda, Masayuki Utsunomiya, Toshihiro Yoshimura, Naohiko Ohkouchi, Atsushi Suzuki, Hodaka Kawahata # Published_Date_or_Year: 2021 in review # Published_Title: Biomarkers in the rock outcrop of the Kazusa Group reveal paleoenvironments of the Kuroshio region # Journal_Name: Communications Earth and Environment # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: # Abstract: The classical biomarkers of long-chain alkenones and n-alkanes preserved in marine and lake sediment cores are widely used to reconstruct paleoenvironments. Here, we detected these biomarkers are preserved in the rock outcrop of the Kazusa Group exposed in central Japan, the most continuous sedimentary succession in the world, covering almost the entire Pleistocene. The alkenone unsaturation ratio and average chain length of n-alkanes appeared to reflect the glacial-interglacial changes in the sea surface temperature (SST) and terrestrial climate, respectively. Alkenone-based SSTs during 1.1-1.0 Ma were significantly higher than present-day SSTs in the same area, as supported by foraminiferal Mg/Ca-based temperatures, possibly reflecting the direct intrusion of the warm Kuroshio Current. #------------------ # Funding_Agency # Funding_Agency_Name: Japan Society for Promotion of Science # Grant: #------------------ # Site_Information # Site_Name: Kazusa Group # Location: Asia>Eastern Asia>Japan # Country: Japan # Northernmost_Latitude: 35.3519 # Southernmost_Latitude: 35.2750 # Easternmost_Longitude: 140.265 # Westernmost_Longitude: 135.1597 # Elevation: #------------------ # Data_Collection # Collection_Name: Kajita2021biomarker # Earliest_Year: 1500000 # Most_Recent_Year: 0 # Time_Unit: Cal. Year BP # Core_Length: # Notes: #------------------ # Chronology_Information # Chronology: # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: one per line, shortname-tab-variable components (what, material, error, units, seasonality, data type,detail, method, C or N for Character or Numeric data, free text) # ## Sample sample identification,,,,,paleoceanography,,,C, ## CCDHm depth, , , meter, , paleoceanography, , ,N, ## UK'37 alkenone unsaturation index Uk37 prime, , , dimensionless, , paleoceanography, , ,N, ## SST sea surface temperature, , , degrees Celsius, ,paleocanography: climate reconstructions,,,N, alkenone SST ## ACL average chain length, n-alkane, , dimensionless, , paleoceanography, , ,N, ## CPI carbon preference index, n-alkane, , dimensionless, , paleoceanography, , ,N, ## C/N carbon/nitrogen, , , dimensionless, , paleoceanography, , ,N, # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # Sample CCDH UK'37 UK37SST ACL CPI C/N S-2 27.90 0.894 25.8 30.4 3.93 6.9 S-3 28.79 0.906 26.1 30.5 3.89 7.9 S-1 32.75 0.864 24.9 30.6 4.29 7.8 S-5 33.95 0.887 25.5 30.6 4.51 8.1 S-4 34.54 0.877 25.3 30.5 4.92 9.0 S-27 56.04 0.831 23.8 30.4 5.63 9.6 S-26 57.14 0.849 24.4 30.6 5.69 6.8 Y-05 57.99 0.827 23.7 30.6 5.66 10.4 S-25 59.89 0.832 23.9 30.5 5.44 8.4 S-46 62.35 0.863 24.8 30.7 5.73 13.7 S-45 63.79 0.865 24.9 30.7 6.02 12.1 S-44 67.18 0.890 25.6 31.0 5.84 12.5 S-43 68.37 0.901 26.0 30.9 5.05 14.9 Y-04 69.43 0.902 25.99 31.0 3.92 10.0 S-15 69.70 0.903 26.03 30.8 3.99 8.3 S-42 70.01 0.919 26.52 30.6 4.00 6.9 Y-03 70.85 0.873 25.12 31.0 4.40 8.9 S-8 71.56 0.919 26.53 30.6 3.66 8.2 S-9 71.87 0.894 25.74 30.8 4.01 8.3 S-10 72.35 0.894 25.75 30.9 4.32 8.4 S-11 73.28 0.895 25.77 30.9 4.06 7.0 S-48 74.08 0.906 26.13 31.0 4.76 11.2 Y-02 74.88 0.921 26.57 30.9 4.12 9.8 S-12 75.28 0.865 24.88 30.8 4.23 8.8 S-13 77.40 0.880 25.34 30.8 5.25 9.8 S-14 78.77 0.867 24.93 30.7 5.77 12.8 Y-01 79.44 0.870 25.02 30.8 5.35 11.3 S-24 90.70 0.823 23.6 30.3 4.77 8.7 S-41 91.69 0.819 23.5 30.2 4.10 9.0 S-40 92.09 0.795 22.8 30.2 4.85 7.9 S-36 92.74 0.827 23.7 30.1 5.45 8.8 S-35 94.12 0.893 25.7 30.1 5.13 8.8 S-34 95.02 0.903 26.0 30.2 5.51 10.3 S-33 96.21 0.906 26.1 30.1 5.73 9.9 S-37 97.85 0.877 25.2 30.3 5.39 12.8 S-38 98.64 0.916 26.4 30.5 5.07 10.2 S-32 101.19 0.917 26.5 30.5 4.69 8.9 S-31 101.84 0.885 25.5 30.3 5.12 8.0 S-30 102.97 0.903 26.0 30.5 4.56 8.3 S-29 103.00 0.904 26.1 30.6 4.64 8.6 S-39 103.82 0.900 25.9 30.4 5.02 8.2