# North Alaska Continental Margin Late Pleistocene Physical Properties Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # # 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/19500 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/nam2015/nam2015-4b02.txt # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleoceanography # # Parameter_Keywords: physical properties, sea ice, ice extent, sea surface temperature, reconstruction #-------------------- # Contribution_Date # Date: 2015-11-02 #-------------------- # Title # Study_Name: North Alaska Continental Margin Late Pleistocene Physical Properties Data #-------------------- # Investigators # Investigators: Nam, S.-I. #-------------------- # Description_and_Notes # Description: Sediment physical properties data for 7 cores collected in 2013 by RV Araon on the North Alaskan Continental Margin, # US EEZ waters. Parameters measured include velocity, density, impedance, magnetic susceptibility, porosity, and resistivity. # Provided_keywords: North Alaskan Continental Margin, recent sedimentary history #-------------------- # Publication # Authors: Niessen, F., Stein, R., Matthiessen, J.,  Jensen, L., Nam, S.-I., Schrek, M. # Published_Date_or_Year: 2015 # Published_Title: Pleistocene glaciations in the western Arctic Ocean: tentative age model of marine glacial landforms # Journal_Name: EGU Geophysical Research Abstracts # Volume: 17 # Edition: # Issue: # Pages: # Report_Number: EGU2015-10670 # DOI: # Online_Resource: # Full_Citation: # Abstract: Recently glacial landforms were presented and interpreted as complex pattern of Pleistocene glaciations in the western Arctic Ocean along the continental margin of the East Siberian and Chukchi seas, (Niessen et al. 2013, Dove et al. 2014). These landforms include moraines, drumlins, glacigenic debris flows, till wedges and mega-scale glacial lineations. Orientations of some of the landforms suggest the presence of former ice sheets on the Chukchi Borderland and the East Siberian shelf. Here we present a tentative age model for some of the younger glacial events by correlation of sediment cores with glacial landforms as seen in subbottom profiles. The database was obtained during RV "Polarstern" cruise ARK-XIII/3 (2008) and RV "Araon" cruise ARA03B (2012), which investigated an area between the Chukchi Borderland and the East Siberian Sea between 165W and 170E. The stratigraphic correlation of sediment cores is based on physical properties (wet-bulk density and magnetic susceptibility), lithology and color. The chronology of the area has been proposed by Stein et al. (2010) for a core from the Chukchi Abyssal Plain (PS72/340-5) and includes brown layers B1 to B9 (marine isotope stages MIS 1 to MIS 7), which are used as marker horizons for lateral core correlation. Our tentative age model suggests that the youngest and shallowest (480 m below present water level; mbpwl) grounding event of an ice sheet on the Chukchi Borderland is younger than B2 (interpreted as Last Glacial Maximum; LGM). There is no clear evidence for a LGM glaciation along the East Siberian margin because intensive post LGM iceberg scouring occurred above 350 m present water level. On the slopes of the East Siberian Sea two northerly directed ice advances occurred, both of which are older and younger than B2 and B3, respectively. The younger advance grounded to about 700 m present water depth along the continental slope and the older to 900 m and 1100 m on the Arlis Plateau and the East Siberian continental margin, respectively. We interpret these advances as Middle Weichselian glaciations on the Beringian shelf (MIS 4 to 3). Two older glaciations can be dated as Early Weichselian (MIS 5b to 5d), of which the younger event is older and younger than B3 and B4, respectively. This glaciation can be traced by glacial wedges, streamlined lineations in up to 1200 mbpsl and subglacial diamicton along the East Siberian margin, the Arlis Plateau, and the Mendeleev Ridge. There are at least three older glaciation visible in acoustic images from the East Siberian continental margin, which probably predate the Weichselian. The available cores did not penetrate these events and the ages remain speculative. #------------------ # Funding_Agency # Funding_Agency_Name: Korea Polar Research Institute # Grant: K-POLAR program #------------------ # Site_Information # Site_Name: ARA04B-02GC # Location: Ocean>Arctic Ocean # Country: # Northernmost_Latitude: 73.367 # Southernmost_Latitude: 73.367 # Easternmost_Longitude: -152.4005 # Westernmost_Longitude: -152.4005 # Elevation: m #------------------ # Data_Collection # Collection_Name: Nam2015-4B02 # Earliest_Year: 30000 # Most_Recent_Year: 0 # Time_Unit: Cal. Year BP # Core_Length: 0.17 m # Notes: #------------------ # Chronology_Information # Chronology: Age dating has not been conducted yet # #---------------- # Variables # # Data variables follow are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ## depth_m depth, , , m, , , MBSF, ,N ## sectnum section number, , , , , , , ,N ## depth_sec depth in section, , , cm, , , , ,N ## pwave velocity - compressional wave, , , m/s, , paleoceanography, , ,N ## wbd Wet Bulk Density, , , g/cm3, , paleoceanography, , ,N ## susc_si_vs Magnetic susceptibility Volume specific, , , SI x10-6, , paleoceanography, , ,N ## impedance impedance, , , , ,paleoceanography, , ,N ## porosity porosity, , , fraction, ,paleoceanography, , ,N ## ncr noncontact resistivity, , , ohm.m, ,paleoceanography, , ,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # depth_m sectnum depth_sec pwave wbd susc_si_vs impedance porosity ncr 0 1 9.6 1.3673 161.98 0.79802 0.006 1 10.6 1505.1 1.3893 191.5 2091 0.78485 0.016 1 11.6 1508.3 1.4159 215.44 2135.6 0.76892 0.026 1 12.6 1507.4 1.4984 233.79 2258.7 0.71952 0.83119 0.036 1 13.6 1510 1.5549 245.76 2347.8 0.68569 0.74377 0.046 1 14.6 1.6026 252.95 0.65713 0.71564 0.056 1 15.6 1.714 253.74 0.59042 0.71918 0.066 1 16.6 1527.8 1.6927 251.35 2586 0.60317 0.73687 0.076 1 17.6 1536 1.6891 248.96 2594.5 0.60533 0.75404 0.086 1 18.6 1.6889 248.96 0.60545 0.76127 0.096 1 19.6 1606.2 1.954 252.95 3138.5 0.44671 0.76065 0.106 1 20.6 1604.3 1.8406 258.53 2952.8 0.51461 0.75528 0.116 1 21.6 1523 1.6552 264.12 2520.9 0.62563 0.74618 0.126 1 22.6 1.7282 265.71 0.58192 0.73665 0.136 1 23.6 1.7023 263.32 0.59743 0.72727 0.146 1 24.6 1530.1 1.7134 258.53 2621.6 0.59078 0.72466 0.156 1 25.6 1525.2 1.7336 253.74 2644 0.57868 0.70806 0.166 1 26.6 1522.1 1.6974 248.16 2583.5 0.60036 0.69362 0.176 1 27.6 1520.1 1.7104 242.57 2600 0.59257 0.65796 0.186 1 28.6 1520.9 1.6966 238.58 2580.4 0.60084 0.66097 0.196 1 29.6 1519.8 1.7236 235.39 2619.5 0.58467 0.66223 0.206 1 30.6 1523.3 1.6856 232.2 2567.7 0.60743 0.6639 0.216 1 31.6 1529.4 1.7157 225.82 2623.9 0.5894 0.67249 0.226 1 32.6 1809.3 1.8397 217.84 3328.6 0.51515 0.6719 0.236 1 33.6 1842.1 2.0061 213.85 3695.5 0.41551 0.68186 0.246 1 34.6 1962.4 2.0249 213.85 3973.7 0.40425 0.68776 0.256 1 35.6 1864.3 1.9645 221.03 3662.4 0.44042 0.69844 0.266 1 36.6 1554 1.8513 236.19 2876.9 0.5082 0.71935 0.276 1 37.6 1.7479 250.55 0.57012 0.74668 0.286 1 38.6 1.6984 260.92 0.59976 0.77382 0.296 1 39.6 1.7317 268.9 0.57982 0.79325 0.306 1 40.6 1.6958 276.88 0.60132 0.80392 0.316 1 41.6 1.8502 281.67 0.50886 0.79811 0.326 1 42.6 1513.8 1.9155 280.87 2899.6 0.46976 0.79466 0.336 1 43.6 1638.1 1.834 273.69 3004.3 0.51856 0.81518 0.346 1 44.6 1522.2 1.7843 261.72 2716 0.54832 0.84166 0.356 1 45.6 1520.7 1.7119 248.96 2603.2 0.59168 0.86857 0.366 1 46.6 1520.8 1.723 237.78 2620.3 0.58503 0.87198 0.376 1 47.6 1523.9 1.7234 228.21 2626.2 0.58479 0.85401 0.386 1 48.6 1525.5 1.7359 224.22 2648.2 0.57731 0.83081 0.396 1 49.6 1528.3 1.751 222.62 2676.1 0.56826 0.81336 0.406 1 50.6 1529.6 1.7381 225.82 2658.7 0.57599 0.79571 0.416 1 51.6 1524.1 1.8023 233 2747 0.53754 0.79635 0.426 1 52.6 1533 1.7948 244.17 2751.4 0.54204 0.79533 0.436 1 53.6 1526.3 1.7346 256.14 2647.5 0.57808 0.79547 0.446 1 54.6 1528.8 1.729 268.9 2643.3 0.58144 0.79511 0.456 1 55.6 1528.7 1.7857 281.67 2729.8 0.54749 0.80952 0.466 1 56.6 1.8875 287.26 0.48653 0.83859 0.476 1 57.6 1520.7 1.7729 284.86 2696 0.55515 0.8649 0.486 1 58.6 1526.2 1.7281 278.48 2637.5 0.58198 0.90729 0.496 1 59.6 1521.7 1.7455 269.7 2656.2 0.57156 0.99747 0.506 1 60.6 1604.5 1.7836 260.13 2861.8 0.54874 1.2209 0.516 1 61.6 1.7507 246.56 0.56844 1.7878 0.526 1 62.6 1.721 226.61 0.58623 3.1439 0.536 1 63.6 206.67 5.5403 0.546 1 64.6 197.89 6.5711 0.556 1 65.6 209.06 6.9959 0.566 2 0.6 1.6997 232.2 0.59898 7.4741 0.576 2 1.6 1.8424 258.53 0.51353 5.9507 0.586 2 2.6 1.8315 280.87 0.52006 3.6273 0.596 2 3.6 1.8164 294.44 0.5291 2.0226 0.606 2 4.6 1.8463 298.43 0.5112 1.4486 0.616 2 5.6 2256.1 1.8783 295.24 4237.7 0.49204 1.2134 0.626 2 6.6 1.8817 286.46 0.49 1.1004 0.636 2 7.6 1.9125 275.29 0.47156 1.0393 0.646 2 8.6 1.8869 263.32 0.48689 1.0046 0.656 2 9.6 1.8787 251.35 0.4918 0.96701 0.666 2 10.6 1.8376 242.57 0.51641 0.93363 0.676 2 11.6 1.7944 234.59 0.54228 0.89752 0.686 2 12.6 1.7239 226.61 0.58449 0.87561 0.696 2 13.6 1.719 219.43 0.58743 0.86741 0.706 2 14.6 1.7328 212.25 0.57916 0.85765 0.716 2 15.6 1.741 205.87 0.57425 0.83877 0.726 2 16.6 1.7423 200.28 0.57347 0.80835 0.736 2 17.6 1554.1 1.7585 195.49 2732.9 0.56377 0.78376 0.746 2 18.6 1545.2 1.7353 192.3 2681.4 0.57766 0.78237 0.756 2 19.6 1536.3 1.7105 189.91 2627.9 0.59251 0.79591 0.766 2 20.6 1538.2 1.7162 189.91 2639.9 0.5891 0.81981 0.776 2 21.6 1561.7 1.7673 193.1 2760.1 0.5585 0.8396 0.786 2 22.6 1578.7 1.7961 198.69 2835.5 0.54126 0.83936 0.796 2 23.6 1579.9 1.7941 207.46 2834.6 0.54246 0.82717 0.806 2 24.6 1581.3 1.7992 221.83 2845.1 0.5394 0.82163 0.816 2 25.6 1571.7 1.7761 242.57 2791.5 0.55323 0.82861 0.826 2 26.6 1568 1.8174 272.1 2849.7 0.5285 0.86091 0.836 2 27.6 1556.9 1.8007 310.4 2803.6 0.5385 0.91016 0.846 2 28.6 1553.4 1.774 362.26 2755.7 0.55449 0.92489 0.856 2 29.6 1549.3 1.7938 428.49 2779.2 0.54263 0.90359 0.866 2 30.6 1.8719 511.48 0.49587 0.83433 0.876 2 31.6 2.0035 592.07 0.41707 0.78198 0.886 2 32.6 1.9136 643.14 0.4709 0.78148 0.896 2 33.6 2117.9 1.8398 643.93 3896.6 0.51509 0.81159 0.906 2 34.6 1550.3 1.8509 599.25 2869.5 0.50844 0.83814 0.916 2 35.6 1536.5 1.8151 529.03 2788.9 0.52988 0.8274 0.926 2 36.6 1533.7 1.8995 462 2913.3 0.47934 0.80386 0.936 2 37.6 1518.4 1.8081 410.14 2745.5 0.53407 0.78937 0.946 2 38.6 1.7935 372.64 0.54281 0.78531 0.956 2 39.6 1543.4 1.7702 350.29 2732.2 0.55677 0.78464 0.966 2 40.6 1544.6 1.7727 339.92 2738.1 0.55527 0.78588 0.976 2 41.6 1544.8 1.7996 337.53 2780.1 0.53916 0.7863 0.986 2 42.6 1551.7 1.7938 343.91 2783.4 0.54263 0.77948 0.996 2 43.6 1548.1 1.7918 354.28 2773.8 0.54383 0.77723 1.006 2 44.6 1548.5 1.8073 367.05 2798.6 0.53455 0.7804 1.016 2 45.6 1555.1 1.827 380.61 2841.2 0.52275 0.7903 1.026 2 46.6 1551.1 1.8177 394.98 2819.4 0.52832 0.79286 1.036 2 47.6 1547.1 1.8084 410.14 2797.8 0.53389 0.78177 1.046 2 48.6 1534.4 1.9036 424.5 2921 0.47689 0.77296 1.056 2 49.6 1538.2 1.889 434.08 2905.8 0.48563 0.77122 1.066 2 50.6 1549.1 1.8538 434.08 2871.7 0.50671 0.78553 1.076 2 51.6 1553 1.8587 423.7 2886.6 0.50377 0.79647 1.086 2 52.6 1551.1 1.8655 402.96 2893.5 0.4997 0.79904 1.096 2 53.6 1546.1 1.82 376.63 2813.8 0.52695 0.79486 1.106 2 54.6 1548 1.7806 355.88 2756.4 0.55054 0.79738 1.116 2 55.6 1548.6 1.7996 343.91 2786.8 0.53916 0.80934 1.126 2 56.6 1551.3 1.7977 339.12 2788.8 0.5403 0.82821 1.136 2 57.6 1548.9 1.8282 337.53 2831.8 0.52204 0.83476 1.146 2 58.6 1549.6 1.8305 331.94 2836.5 0.52066 0.82656 1.156 2 59.6 1550.7 1.8083 323.96 2804.2 0.53395 0.82194 1.166 2 60.6 1550.7 1.819 315.98 2820.7 0.52754 0.82644 1.176 2 61.6 1550.5 1.8027 308 2795 0.53731 0.8354 1.186 2 62.6 1547.1 1.7922 299.23 2772.7 0.54359 0.83789 1.196 2 63.6 1545 1.7737 292.04 2740.3 0.55467 0.83573 1.206 2 64.6 1545.8 1.7943 288.85 2773.6 0.54234 0.83117 1.216 2 65.6 1546 1.7834 288.85 2757.1 0.54886 0.82624 1.226 2 66.6 1536.1 1.8301 294.44 2811.1 0.5209 0.8237 1.236 2 67.6 1684.6 1.8489 300.82 3114.7 0.50964 0.81517 1.246 2 68.6 1547 1.7833 307.2 2758.8 0.54892 0.8084 1.256 2 69.6 1548.8 1.7762 311.19 2751.1 0.55317 0.80337 1.266 2 70.6 1544.8 1.8002 312.79 2780.9 0.5388 0.79983 1.276 2 71.6 1544.2 1.8112 306.41 2796.8 0.53222 0.79619 1.286 2 72.6 1545 1.7811 294.44 2751.7 0.55024 0.79424 1.296 2 73.6 1544.8 1.781 281.67 2751.2 0.5503 0.79469 1.306 2 74.6 1547.1 1.7756 272.1 2747 0.55353 0.79772 1.316 2 75.6 1546.8 1.7954 264.12 2777.2 0.54168 0.79677 1.326 2 76.6 1546.3 1.7751 257.73 2744.8 0.55383 0.79593 1.336 2 77.6 1545.7 1.7842 252.15 2757.9 0.54838 0.79156 1.346 2 78.6 1544.9 1.783 248.16 2754.5 0.5491 0.79395 1.356 2 79.6 1541.9 1.779 243.37 2743.1 0.5515 0.79918 1.366 2 80.6 1543.5 1.7817 240.18 2750 0.54988 0.80669 1.376 2 81.6 1544 1.7811 239.38 2750.1 0.55024 0.80835 1.386 2 82.6 1540.7 1.7822 237.78 2745.9 0.54958 0.79946 1.396 2 83.6 1539.4 1.7822 237.78 2743.5 0.54958 0.78941 1.406 2 84.6 1544.1 1.7844 238.58 2755.3 0.54826 0.78801 1.416 2 85.6 1545.1 1.7793 237.78 2749.3 0.55132 0.78941 1.426 2 86.6 1543.3 1.7817 239.38 2749.6 0.54988 0.79453 1.436 2 87.6 1543.9 1.7704 240.98 2733.4 0.55665 0.79701 1.446 2 88.6 1544 1.7724 241.77 2736.7 0.55545 0.80099 1.456 2 89.6 1544 1.7771 244.17 2743.8 0.55263 0.80388 1.466 2 90.6 1544.1 1.784 248.16 2754.6 0.5485 0.80483 1.476 2 91.6 1543 1.7834 254.54 2751.8 0.54886 0.80782 1.486 2 92.6 1542.9 1.7737 266.51 2736.7 0.55467 0.81228 1.496 2 93.6 1545.8 1.7749 283.27 2743.6 0.55395 0.81944 1.506 2 94.6 1545.6 1.7833 300.82 2756.2 0.54892 0.82752 1.516 2 95.6 1548.9 1.7889 308.8 2770.9 0.54557 0.82607 1.526 2 96.6 1549 1.793 300.82 2777.3 0.54311 0.82665 1.536 2 97.6 1547.3 1.7956 292.04 2778.3 0.54156 0.83475 1.546 2 98.6 1546.7 1.795 284.86 2776.3 0.54192 0.84571 1.556 2 99.6 1549.7 1.7928 283.27 2778.3 0.54323 0.85922 1.566 2 100.6 1551.1 1.8023 284.06 2795.6 0.53754 0.86605 1.576 2 101.6 1551.4 1.7885 285.66 2774.7 0.54581 0.87216 1.586 2 102.6 1551.5 1.802 286.46 2795.7 0.53772 0.87077 1.596 2 103.6 1550.7 1.8104 289.65 2807.3 0.53269 0.86491 1.606 2 104.6 1551.9 1.8206 296.83 2825.4 0.52659 0.86128 1.616 2 105.6 1.8012 310.4 0.5382 0.8624 1.626 2 106.6 1.8053 327.15 0.53575 0.86866 1.636 2 107.6 1.8059 343.11 0.53539 0.86639 1.646 2 108.6 1.8063 353.49 0.53515 0.86499 1.656 2 109.6 1.836 358.27 0.51737 0.86622 1.666 2 110.6 1.8244 353.49 0.52431 0.87166 1.676 2 111.6 1.8036 348.7 0.53677 0.87275 1.686 2 112.6 1.8159 348.7 0.5294 0.86661 1.696 2 113.6 1.8209 358.27 0.52641 0.86432 1.706 2 114.6 1.8387 367.85 0.51575 0.86624 1.716 2 115.6 1.8076 368.65 0.53437 0.88003 1.726 2 116.6 1.802 360.67 0.53772 0.9037 1.736 2 117.6 1.8167 348.7 0.52892 0.92521 1.746 2 118.6 1.8094 337.53 0.53329 0.95415 1.756 2 119.6 1.7951 327.15 0.54186 0.96956 1.766 2 120.6 1.8188 320.77 0.52766 0.97977 1.776 2 121.6 1.8195 314.39 0.52725 0.97547 1.786 2 122.6 1.799 305.61 0.53952 0.93919 1.796 2 123.6 1.7939 292.84 0.54257 0.90051 1.806 2 124.6 1.7971 284.06 0.54066 0.85542 1.816 2 125.6 1.808 278.48 0.53413 0.82441 1.826 2 126.6 1.8078 276.88 0.53425 0.81786 1.836 2 127.6 1.8067 274.49 0.53491 0.82026 1.846 2 128.6 1.8162 272.89 0.52922 0.8467 1.856 2 129.6 1.8047 270.5 0.53611 0.88055 1.866 2 130.6 1.806 272.1 0.53533 0.9075 1.876 2 131.6 1.7999 275.29 0.53898 0.91302 1.886 2 132.6 1.8002 278.48 0.5388 0.90461 1.896 2 133.6 1.8024 281.67 0.53749 0.88814 1.906 2 134.6 1.8207 283.27 0.52653 0.88368 1.916 2 135.6 1.8067 286.46 0.53491 0.8811 1.926 2 136.6 1.8183 290.45 0.52796 0.88645 1.936 2 137.6 1.7948 294.44 0.54204 0.88654 1.946 2 138.6 1.812 304.01 0.53174 0.88365 1.956 2 139.6 1560.1 1.8058 313.59 2817.2 0.53545 0.87969 1.966 2 140.6 1564.2 1.8126 323.96 2835.3 0.53138 0.87641 1.976 2 141.6 1566.5 1.8222 331.94 2854.5 0.52563 0.87607 1.986 2 142.6 1568.2 1.8286 352.69 2867.6 0.5218 0.8759 1.996 2 143.6 1569.7 1.8386 365.45 2886.1 0.51581 0.87759 2.006 2 144.6 1.7978 380.61 0.54024 0.88959 2.016 2 145.6 1562 1.7881 397.37 2792.9 0.54605 0.9057 2.026 2 146.6 1.8129 414.13 0.5312 0.94383 2.036 2 147.6 1.7868 429.29 0.54683 1.0137 2.046 2 148.6 1.7888 444.45 0.54563 2.056 2 149.6 458.81