# Dome Fuji Wet Extraction Gas Data (15N, O2/N2, Ar/N2) for the Past 173 kyrs #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. # If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with '#' followed by a space # Data lines have no '#' # # NOAA_Landing_Page: https://www.ncdc.noaa.gov/access/paleo-search/study/35259 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-icecore-35259.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Ice Cores # # Dataset_DOI: # # Science_Keywords: #--------------------------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/oyabu2021/oyabu2021-fuji-clath.txt # Data_Download_Description: NOAA Template File; Dome Fuji 1258-1893m Gas Data # # Original_Source_URL: https://doi.org/10.17592/001.2021043001 # Original_Source_Description: NIPR ADS data repository #--------------------------------------- # Contribution_Date # Date: 2022-01-13 #--------------------------------------- # File_Last_Modified_Date # Date: 2022-01-13 #--------------------------------------- # Title # Study_Name: Dome Fuji Wet Extraction Gas Data (15N, O2/N2, Ar/N2) for the Past 173 kyrs #--------------------------------------- # Investigators # Investigators: Oyabu, I.; Kawamura, K.; Kitamura, K.; Hirabayashi, M.; Aoki, S.; Morimoto, S.; Nakazawa, T. #--------------------------------------- # Description_Notes_and_Keywords # Description: Ice core gas data (15N, O2/N2, Ar/N2) from the Dome Fuji, Antarctica for the past 173 kyrs. # Provided Keywords: ice cores, atmosphere #--------------------------------------- # Publication # Authors: Oyabu, I., Kawamura, K., Uchida, T., Fujita, S., Kitamura, K., Hirabayashi, M., Aoki, S., Morimoto, S., Nakazawa, T., Severinghaus, J.P., and Morgan, J.D. # Published_Date_or_Year: 2021-12-10 # Published_Title: Fractionation of O2/N2 and Ar/N2 in the Antarctic ice sheet during bubble formation and bubble–clathrate hydrate transition from precise gas measurements of the Dome Fuji ice core # Journal_Name: The Cryosphere # Volume: 15 # Edition: # Issue: # Pages: 5529–5555 # Report_Number: # DOI: 10.5194/tc-15-5529-2021 # Online_Resource: # Full_Citation: # Abstract: The variations of dO2/N2 and dAr/N2 in the Dome Fuji ice core were measured from 112 m (bubbly ice) to 2001 m (clathrate hydrate ice). Our method, combined with the low storage temperature of the samples (-50 °C), successfully excludes post-coring gas-loss fractionation signals from our data. From the bubbly ice to the middle of the bubble-clathrate transition zone (BCTZ) (112 – 800 m) and below the BCTZ (>1200 m), the dO2/N2 and dAr/N2 data exhibit orbital-scale variations similar to local summer insolation. The data in the lower BCTZ (800 – 1200 m) have large scatters, which may be caused by mm-scale inhomogeneity of air composition combined with finite sample lengths. The insolation signal originally recorded at the bubble close-off remains through the BCTZ, and the insolation signal may be reconstructed by analyzing long ice samples (more than 50 cm for the Dome Fuji core). In the clathrate hydrate zone, the scatters around the orbital-scale variability decrease with depth, indicating diffusive smoothing of dO2/N2 and dAr/N2. A simple gas diffusion model was used to reproduce the smoothing and thus constrain their permeation coefficients. The relationship between dAr/N2 and dO2/N2 is markedly different for the datasets representing bubble close-off (slope ~0.5), bubble-clathrate hydrate transformation (~1), and post-coring gas-loss (~0.2), suggesting that the contribution of the mass-independent and mass-dependent fractionation processes are different for those cases. The method and data presented here may be useful for improving the orbital dating of deep ice cores over the multiple glacial cycles and further studying non-insolation-driven signals (e.g., atmospheric composition) of these gases. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Japan Society for the Promotion of Science (JSPS) # Grant: 20H04327, 17K12816, 17J00769, 20H00639, 15KK0027, 26241011, 18H05294 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Japan Ministry of Education, Culture, Sports, Science and Technology (MEXT) # Grant: 17H06320 #--------------------------------------- # Site_Information # Site_Name: Dome Fuji # Location: Antarctica # Northernmost_Latitude: 77.31694 # Southernmost_Latitude: 77.31694 # Easternmost_Longitude: 39.70333 # Westernmost_Longitude: 39.70333 # Elevation_m: 3810 #--------------------------------------- # Data_Collection # Collection_Name: Dome Fuji 1258-1893m Oyabu2021 # First_Year: 149186 # Last_Year: 78168 # Time_Unit: cal yr BP # Core_Length_m: # Parameter_Keywords: atmospheric gas # Notes: #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # Variables # PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # ## Top_m depth at sample end,,,meter,,Ice Cores,,,N,sample top ## Bottom_m depth at sample start,,,meter,,Ice Cores,,,N,sample bottom ## Center_m depth,,,meter,,Ice Cores,,,N,sample center ## IceAge_b1950 ice age,,,calendar year before present,,Ice Cores,,,N,Reference for the DFO-2006 time scale: Kawamura et al. (2007). http://doi.org/10.1038/nature06015 ## GasAge_b1950 gas age,,,calendar year before present,,Ice Cores,,,N,Reference for the DFO-2006 time scale: Kawamura et al. (2007). http://doi.org/10.1038/nature06015 ## d15N delta 15N,nitrogen gas,,per mil,,Ice Cores,,,N, ## d18O delta 18O,oxygen gas,,per mil,,Ice Cores,,,N, ## O2/N2_mean delta O2/N2,bulk atmosphere,,per mil,,Ice Cores,,,N, ## ArN2_mean delta Ar/N2,bulk atmosphere,,per mil,,Ice Cores,,,N, ## d18Ograv delta 18O,oxygen gas,,per mil,,Ice Cores,corrected,,N,gravitationally corrected ## O2N2grav delta O2/N2,bulk atmosphere,,per mil,,Ice Cores,corrected,,N,gravitationally corrected ## ArN2grav delta Ar/N2,bulk atmosphere,,per mil,,Ice Cores,corrected,,N,gravitationally corrected #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NA Top_m Bottom_m Center_m IceAge_b1950 GasAge_b1950 d15N d18O O2/N2 ArN2 d18Ograv O2N2grav ArN2grav 1258.512 1258.537 1258.525 81651 78168 0.491 1.055 0.556 3.164 0.072 -1.409 -2.731 1258.537 1258.562 1258.550 81653 78171 0.478 1.095 11.363 20.898 0.139 9.452 15.167 1258.562 1258.587 1258.575 81655 78173 0.493 0.900 -11.374 -18.444 -0.087 -13.347 -24.363 1258.587 1258.612 1258.600 81658 78176 0.495 0.889 -13.353 -2.480 -0.101 -15.334 -8.422 1258.612 1258.637 1258.625 81660 78179 0.492 1.065 3.058 12.439 0.082 1.090 6.537 1258.637 1258.662 1258.650 81662 78182 0.477 1.079 2.093 2.347 0.125 0.185 -3.377 1258.662 1258.687 1258.675 81664 78184 0.489 0.977 -14.983 -3.689 -0.002 -16.941 -9.562 1258.687 1258.712 1258.700 81667 78187 0.491 0.990 -17.304 2.528 0.007 -19.269 -3.367 1258.712 1258.737 1258.725 81668 78189 0.494 1.005 -10.155 -8.768 0.017 -12.132 -14.698 1258.737 1258.762 1258.750 81671 78193 0.484 1.048 3.337 11.438 0.080 1.402 5.633 1258.762 1258.787 1258.775 81673 78195 0.475 0.941 1.341 -1.134 -0.008 -0.557 -6.829 1258.787 1258.812 1258.800 81675 78198 0.469 0.891 -0.965 3.163 -0.047 -2.840 -2.461 1258.812 1258.837 1258.825 81677 78200 0.470 0.951 0.554 2.396 0.011 -1.326 -3.245 1258.837 1258.862 1258.850 81680 78204 0.487 0.980 -2.580 7.704 0.006 -4.529 1.857 1258.862 1258.887 1258.875 81682 78206 0.488 0.898 -11.222 -10.396 -0.079 -13.175 -16.255 1258.887 1258.912 1258.900 81684 78209 0.479 1.068 1.852 8.340 0.110 -0.065 2.589 1258.912 1258.937 1258.925 81686 78211 0.490 1.039 -5.365 11.348 0.060 -7.323 5.474 1258.937 1258.962 1258.950 81689 78215 0.516 0.866 -18.709 -28.167 -0.165 -20.772 -34.355 1258.962 1258.987 1258.975 81690 78217 0.492 1.051 -0.044 22.523 0.067 -2.012 16.620 1292.285 1292.310 1292.298 84830 81851 0.496 0.968 -3.476 11.312 -0.025 -5.460 5.359 1292.310 1292.335 1292.323 84832 81853 0.505 0.881 -7.529 -8.215 -0.128 -9.547 -14.270 1292.335 1292.360 1292.348 84835 81856 0.501 0.902 -1.995 5.211 -0.100 -3.998 -0.796 1292.360 1292.385 1292.373 84837 81858 0.493 0.897 0.462 2.757 -0.088 -1.508 -3.153 1292.385 1292.410 1292.398 84839 81861 0.479 0.847 0.384 0.358 -0.111 -1.532 -5.390 1292.410 1292.435 1292.423 84841 81862 0.491 0.924 0.186 0.143 -0.058 -1.779 -5.751 1292.435 1292.460 1292.448 84844 81865 0.482 0.919 -8.232 6.409 -0.046 -10.162 0.619 1292.460 1292.485 1292.473 84846 81867 0.491 0.863 -19.052 -10.252 -0.118 -21.015 -16.141 1292.515 1292.540 1292.528 84851 81873 0.493 1.005 -0.099 4.534 0.019 -2.069 -1.377 1292.540 1292.565 1292.553 84853 81875 0.501 0.939 -1.239 4.488 -0.063 -3.241 -1.519 1292.565 1292.590 1292.578 84856 81878 0.497 0.862 -9.054 -4.381 -0.132 -11.042 -10.343 1292.590 1292.615 1292.603 84858 81879 0.457 0.844 -5.733 -1.208 -0.071 -7.562 -6.696 1292.615 1292.640 1292.628 84860 81882 0.500 0.918 0.376 -0.787 -0.081 -1.622 -6.782 1292.640 1292.665 1292.653 84862 81884 0.488 0.936 -1.534 7.432 -0.040 -3.486 1.575 1292.665 1292.690 1292.678 84865 81887 0.482 0.914 -7.958 3.246 -0.050 -9.884 -2.533 1292.690 1292.715 1292.703 84867 81889 0.506 0.972 -12.858 -9.843 -0.040 -14.881 -15.910 1292.715 1292.740 1292.728 84869 81892 0.490 0.968 -14.357 8.308 -0.011 -16.315 2.431 1292.740 1292.765 1292.753 84871 81894 0.503 0.947 -14.611 -7.408 -0.059 -16.623 -13.445 1292.765 1292.790 1292.778 84874 81896 0.487 0.944 -8.480 2.079 -0.031 -10.430 -3.771 1292.790 1292.815 1292.803 84876 81898 0.506 0.926 -2.844 -6.011 -0.086 -4.869 -12.085 1389.785 1389.810 1389.798 95385 91821 0.466 1.380 -7.300 -1.274 0.448 -9.163 -6.862 1389.810 1389.835 1389.823 95386 91823 0.478 1.427 -5.389 4.629 0.470 -7.302 -1.112 1389.835 1389.860 1389.848 95389 91825 0.483 1.396 -8.296 7.576 0.430 -10.227 1.780 1389.860 1389.885 1389.873 95391 91827 0.495 1.359 -14.231 -13.382 0.370 -16.209 -19.317 1389.885 1389.910 1389.898 95393 91830 0.487 1.389 -12.126 2.766 0.415 -14.075 -3.081 1389.910 1389.935 1389.923 95395 91832 0.495 1.467 -9.664 4.249 0.478 -11.642 -1.686 1389.935 1389.960 1389.948 95398 91834 0.488 1.463 -12.111 -1.993 0.487 -14.062 -7.848 1389.960 1389.985 1389.973 95399 91836 0.495 1.423 -16.173 -1.323 0.433 -18.155 -7.268 1390.015 1390.040 1390.028 95405 91841 0.495 1.391 -14.168 -2.424 0.402 -16.147 -8.359 1390.040 1390.065 1390.053 95406 91843 0.479 1.423 -8.064 -1.495 0.465 -9.981 -7.246 1390.065 1390.090 1390.078 95409 91846 0.486 1.464 -3.810 4.638 0.493 -5.753 -1.190 1390.090 1390.115 1390.103 95411 91847 0.492 1.448 -7.780 -1.920 0.465 -9.747 -7.818 1390.115 1390.140 1390.128 95414 91850 0.490 1.378 -15.418 -0.850 0.399 -17.377 -6.725 1390.140 1390.165 1390.153 95415 91851 0.493 1.324 -19.772 -6.990 0.338 -21.744 -12.905 1390.165 1390.190 1390.178 95418 91854 0.498 1.351 -14.053 -3.427 0.354 -16.046 -9.405 1390.190 1390.215 1390.203 95420 91855 0.491 1.428 -2.750 5.547 0.445 -4.716 -0.350 1390.215 1390.240 1390.228 95422 91858 0.486 1.452 1.804 8.010 0.480 -0.139 2.182 1390.240 1390.265 1390.253 95424 91860 0.486 1.411 -3.406 -3.740 0.439 -5.351 -9.574 1390.265 1390.290 1390.278 95427 91862 0.428 1.293 -12.534 3.259 0.438 -14.245 -1.872 1390.290 1390.315 1390.303 95429 91864 0.443 1.295 -19.409 -9.669 0.410 -21.180 -14.981 1399.030 1399.055 1399.043 96165 92618 0.496 1.552 -9.445 -3.550 0.559 -11.430 -9.506 1399.055 1399.080 1399.068 96168 92621 0.486 1.536 -7.076 -1.026 0.563 -9.022 -6.864 1399.080 1399.105 1399.093 96170 92623 0.499 1.557 -6.492 3.518 0.559 -8.487 -2.469 1399.105 1399.130 1399.118 96172 92626 0.502 1.542 -9.103 -1.328 0.538 -11.111 -7.354 1399.130 1399.155 1399.143 96174 92628 0.491 1.502 -12.268 0.638 0.520 -14.232 -5.255 1399.155 1399.180 1399.168 96176 92631 0.503 1.506 -14.799 -6.448 0.499 -16.813 -12.490 1399.180 1399.205 1399.193 96178 92633 0.491 1.528 -10.864 -0.729 0.546 -12.827 -6.620 1399.205 1399.230 1399.218 96180 92636 0.499 1.591 -6.942 3.189 0.593 -8.937 -2.796 1399.230 1399.255 1399.243 96182 92638 0.498 1.578 -7.490 6.887 0.581 -9.483 0.907 1399.255 1399.280 1399.268 96185 92640 0.507 1.523 -11.087 -2.798 0.508 -13.116 -8.886 1399.280 1399.305 1399.293 96186 92642 0.501 1.496 -13.929 -3.749 0.495 -15.932 -9.758 1399.305 1399.330 1399.318 96189 92645 0.499 1.548 -11.990 1.819 0.551 -13.984 -4.163 1399.330 1399.355 1399.343 96191 92647 0.493 1.585 -10.724 0.737 0.598 -12.698 -5.185 1399.355 1399.380 1399.368 96193 92650 NA NA NA NA NA NA NA 1399.380 1399.405 1399.393 96195 92652 0.490 1.489 -15.541 -4.812 0.509 -17.501 -10.692 1399.406 1399.432 1399.419 96197 92655 0.486 1.468 -14.412 -1.200 0.496 -16.357 -7.035 1399.432 1399.458 1399.445 96200 92658 0.491 1.523 -9.438 -0.592 0.541 -11.402 -6.484 1399.458 1399.484 1399.471 96201 92660 0.495 1.543 -5.573 3.012 0.554 -7.551 -2.922 1893.510 1893.534 1893.522 149106 144922 0.478 1.511 -4.326 1.075 0.556 -6.237 -4.657 1893.534 1893.558 1893.546 149111 144927 0.477 1.517 -4.193 1.217 0.562 -6.102 -4.512 1893.558 1893.582 1893.570 149115 144931 0.479 1.507 -3.945 1.384 0.548 -5.863 -4.369 1893.582 1893.605 1893.593 149118 144934 0.481 1.525 -4.212 1.402 0.563 -6.137 -4.374 1893.605 1893.629 1893.617 149123 144940 0.484 1.526 -4.243 1.552 0.558 -6.180 -4.257 1893.629 1893.653 1893.641 149127 144943 0.465 1.487 -4.096 1.570 0.557 -5.957 -4.015 1893.653 1893.677 1893.665 149132 144949 0.471 1.513 -4.307 1.385 0.571 -6.192 -4.272 1893.677 1893.701 1893.689 149135 144952 0.476 1.516 -3.986 1.614 0.565 -5.888 -4.092 1893.701 1893.725 1893.713 149139 144956 0.470 1.508 -4.019 1.275 0.568 -5.898 -4.363 1893.725 1893.749 1893.737 149144 144961 0.468 1.508 -3.944 1.092 0.573 -5.815 -4.519 1893.749 1893.772 1893.760 149147 144965 0.465 1.500 -3.866 1.386 0.569 -5.728 -4.200 1893.772 1893.796 1893.784 149151 144968 0.472 1.503 -4.042 1.566 0.559 -5.931 -4.102 1893.796 1893.820 1893.808 149156 144974 0.476 1.527 -4.029 1.754 0.575 -5.932 -3.955 1893.820 1893.844 1893.832 149160 144977 0.487 1.533 -3.877 1.815 0.560 -5.823 -4.025 1893.844 1893.868 1893.856 149165 144983 0.486 1.550 -3.786 1.605 0.579 -5.729 -4.225 1893.868 1893.892 1893.880 149168 144986 0.489 1.537 -3.776 1.524 0.558 -5.734 -4.348 1893.892 1893.915 1893.904 149172 144990 0.476 1.516 -3.656 1.497 0.563 -5.562 -4.221 1893.915 1893.939 1893.927 149177 144995 0.479 1.516 -3.900 1.746 0.558 -5.816 -4.002 1893.939 1893.963 1893.951 149180 144999 0.479 1.508 -3.788 1.917 0.549 -5.704 -3.832 1893.963 1893.987 1893.975 149186 145004 0.482 1.536 -4.295 1.944 0.573 -6.222 -3.836