# Equatorial Pacific One Million Year Trace Metal Data #----------------------------------------------------------------------- # 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/32373 # Description: NOAA Landing Page # Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/pavia2021/pavia2021tt013-pc72.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: geochemistry #--------------------------------------- # Contribution_Date # Date: 2021-01-18 #--------------------------------------- # File_Last_Modified_Date # Date: 2021-01-18 #--------------------------------------- # Title # Study_Name: Equatorial Pacific One Million Year Trace Metal Data #--------------------------------------- # Investigators # Investigators: Pavia, F.J.; Wang, S.; Middleton, J.L.; Murray, R.W.; Anderson, R.F. #--------------------------------------- # Description_Notes_and_Keywords # Description: Iron, manganese, and titanium concentration data from two sediment cores collected in the Equatorial Pacific Ocean, for the past million years. # Provided Keywords: Deglaciations, respired carbon, Pacific Ocean, Trace Metal, geochemistry, manganese, iron #--------------------------------------- # Publication # Authors: Pavia, F.J., Wang, S., Middleton, J.L., Murray, R.W., Anderson, R.F. # Published_Date_or_Year: 2021 in review # Published_Title: Trace Metal Evidence for Deglacial Ventilation of the Abyssal Pacific and Southern Oceans # Journal_Name: Paleoceanography and Paleoclimatology # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: # Abstract: The deep ocean has long been recognized as the reservoir that stores the carbon dioxide (CO2) removed from the atmosphere during Pleistocene glacial periods. The removal of glacial atmospheric CO2 into the ocean is likely modulated by changes in the degree of utilization of macronutrients at the sea surface and enhanced storage of respired CO2 in the deep ocean, known as enhanced efficiency of the biological pump. Enhanced biological pump efficiency during glacial periods is most easily documented in the deep ocean using proxies for oxygen concentrations, which are directly linked to respiratory CO2 levels. We document the enhanced storage of respired CO2 during the Last Glacial Maximum (LGM) in the Pacific Southern Ocean and deepest Equatorial Pacific using records of deglacial authigenic manganese, which form as relict peaks during increases in bottom water oxygen concentration. These peaks are found at depths and regions where other oxygenation histories have been ambiguous, due to diagenetic alteration of authigenic uranium, another proxy for bottom water oxygen. Our results require that the entirety of the abyssal Pacific below approximately 1000m was enriched in respired CO2 and depleted in oxygen during the LGM. The presence of authigenic Mn enrichment in the deep Equatorial Pacific for each of the last five deglaciations suggests that the storage of respired CO2 in the deep ocean is a ubiquitous feature of late-Pleistocene ice ages. #--------------------------------------- # Publication # Authors: Murray, R.W., C. Knowlton, M. Leinen, A.C. Mix, and C.H. Polsky # Published_Date_or_Year: 2000-12-01 # Published_Title: Export production and carbonate dissolution in the central equatorial Pacific Ocean over the past 1 Myr # Journal_Name: Paleoceanography # Volume: 15 # Edition: # Issue: 6 # Pages: 570-592 # Report_Number: # DOI: 10.1029/1999PA000457 # Online_Resource: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/1999PA000457 # Full_Citation: # Abstract: In order to quantify changes in export production and carbonate dissolution over the past 1 Myr in the central equatorial Pacific Ocean we analyzed Ba, P, Al Ti, and Ca in 1106 samples from five piston cores gathered from 5S to 4N at 140W. We focused on Ba/Ti, Al/Ti, and P/Ti ratios as export proxies and employed areally integrated time slice as well as time series strategies. Carbonate maxima from 0-560 kyr are characterized by 15-30% greater export than carbonate minima. The increases in export fall on glacial d18O transitions rather than glacial maxima. From 560-800 kyr, overlapping with the mid-Pleistocene transition, there is a very large increase in total export yet no glacial-interglacial variability. The highest latitudes (5S and 4N) record minimal absolute export change from glacials to interglacials and yet record the most extreme minima in percent CaCO3, indicating that carbonate records there are dominated by dissolution, whereas near the equator they are more influenced by changes in export. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: OCE 93-01097, OCE OCE-9022301 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Swiss National Science Foundation # Grant: PP00P2-144811, PP00P2-172915 #--------------------------------------- # Site_Information # Site_Name: TT013-PC72 # Location: Ocean>Pacific Ocean>Central Pacific Ocean # Northernmost_Latitude: 0.1137 # Southernmost_Latitude: 0.1137 # Easternmost_Longitude: -139.4015 # Westernmost_Longitude: -139.4015 # Elevation: 4298 #--------------------------------------- # Data_Collection # Collection_Name: Pavia2021TT013-PC72 # First_Year: 1045269 # Last_Year: 0 # Time_Unit: cal yr BP # Core_Length: # Notes: #--------------------------------------- # 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) # ## depth depth,,,centimeter,,Paleoceanography,,,N, ## age_ky age,,,calendar kiloyear before present,,Paleoceanography,,,N,age from published age models; see metadata for publications ## Mn Manganese,sediment,,parts per million,,Paleoceanography,,inductively-coupled plasma optical emission spectroscopy,N,Errors are precision estimated from replicate analyses of sediment samples; one standard deviation 3%; as published in Murray et al. 2000 ## Fe Iron,sediment,,parts per million,,Paleoceanography,,inductively-coupled plasma optical emission spectroscopy,N,Errors are precision estimated from replicate analyses of sediment samples; one standard deviation 4%; as published in Murray et al. 2000 ## Ti Titanium,sediment,,parts per million,,Paleoceanography,,inductively-coupled plasma optical emission spectroscopy,N,Errors are precision estimated from replicate analyses of sediment samples; one standard deviation 3%; as published in Murray et al. 2000 # #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: -999 # depth age_ky Mn Fe Ti 14 2.738 610 1514 71.2 19 5.106 637 1313 59.6 24 7.203 731 1212 55.2 29 9.125 1995 1247 53.1 34 10.917 2340 1144 54.0 39 12.608 1047 1241 61.5 44 14.229 651 1247 59.1 49 15.802 185 1284 50.8 54 17.351 77 1380 58.0 59 18.900 219 1222 56.9 64 20.479 264 1268 56.6 69 22.115 302 1403 65.8 74 23.852 262 1219 53.2 79 25.744 253 1066 47.4 84 27.860 252 1074 45.7 89 30.315 244 948 45.3 94 33.219 249 1037 40.9 99 36.621 278 970 41.3 104 40.298 292 1067 41.4 114 47.190 312 1008 42.6 119 50.152 325 1050 47.0 124 52.786 325 948 37.6 129 55.163 338 1025 41.1 134 57.370 343 1095 47.6 139 59.494 386 1282 54.9 144 61.599 373 1435 67.3 149 63.739 596 2358 123.0 154 66.047 706 2832 147.2 159 68.355 860 3557 192.6 164 70.963 844 3508 184.1 169 73.883 819 2975 158.4 174 77.179 805 2794 140.0 179 80.890 896 3173 167.5 184 85.028 978 3481 181.6 189 89.540 982 3217 163.7 194 94.300 1068 2916 151.9 199 99.145 1003 2748 145.5 204 103.880 1095 3069 147.5 209 108.318 1267 3228 159.3 214 112.369 1250 3272 154.2 219 116.036 1321 3187 151.8 224 119.365 1268 2026 103.4 229 122.417 1798 2035 95.6 234 125.469 5314 1708 91.1 239 128.433 1051 1530 84.8 244 131.421 1075 1361 70.6 249 134.427 1199 1372 64.5 254 137.382 1233 1246 64.8 262 141.844 1267 1285 65.3 267 144.422 802 1358 66.1 272 146.849 610 1336 62.3 277 149.137 796 1372 66.1 282 151.314 1089 1433 71.3 287 153.403 1332 1596 75.6 292 155.423 1137 1548 81.2 297 157.375 1214 1625 80.0 302 159.252 1245 1699 79.9 307 161.043 2310 1692 78.5 312 162.745 1795 1877 96.9 317 164.384 1510 1629 83.5 322 165.989 1086 1755 88.6 327 167.596 1164 1916 97.4 332 169.244 868 2096 105.1 337 170.971 1407 2762 146.3 342 172.829 1305 3198 162.3 347 174.854 1590 4399 234.2 352 177.098 775 6792 341.9 357 179.624 441 5194 274.4 362 182.511 610 6077 338.9 367 185.907 729 5349 274.2 372 190.028 762 1725 79.0 377 194.889 844 4013 200.8 382 199.554 810 3119 158.7 387 203.498 218 2576 121.9 392 207.091 517 1755 80.4 397 210.516 600 1905 88.9 402 213.777 603 2217 110.0 405 216.855 749 2131 112.4 412 219.779 988 2125 108.6 417 222.603 1301 2416 122.3 422 225.396 1074 2488 114.1 428 228.233 433 1781 82.5 432 231.205 671 1649 78.2 437 234.427 640 1392 63.6 442 238.024 481 1190 60.1 447 242.059 1293 1472 73.5 452 246.245 822 1426 75.9 457 250.055 857 1272 66.7 462 253.286 467 1240 61.0 467 255.913 573 1406 65.6 472 258.539 420 1152 49.6 477 260.831 501 1628 75.1 482 263.020 658 2125 116.2 487 265.183 896 3387 178.4 492 267.345 1400 4811 249.7 497 269.590 1493 5607 300.6 502 271.959 742 5670 320.0 507 274.527 1269 6878 350.2 512 277.352 529 6614 323.0 517 280.517 455 2822 132.3 522 284.077 479 2466 129.8 527 288.069 524 2762 145.9 532 292.488 530 2608 122.4 537 297.356 495 2154 102.0 542 302.712 551 2181 104.6 547 308.207 659 2438 117.8 550 311.199 573 2360 115.9 557 315.591 627 2421 119.9 563 319.982 600 2884 142.4 567 322.712 542 2674 141.1 573 325.185 419 1806 83.9 577 327.493 405 1034 52.1 583 329.706 414 896 42.7 587 331.873 423 796 34.4 593 334.056 438 981 38.4 597 336.239 666 985 46.7 603 338.516 2234 921 47.2 608 340.908 391 1113 55.3 613 343.464 346 1165 64.7 617 346.215 352 1149 59.8 623 349.188 295 1126 59.1 627 352.363 376 1021 48.9 633 355.661 475 1046 61.2 637 358.966 398 1412 77.7 643 362.176 373 1841 89.9 647 365.249 375 2023 111.6 653 368.194 370 2671 140.9 657 371.048 386 2733 144.1 663 373.859 403 2837 147.0 667 376.678 402 3118 154.7 673 379.546 372 2782 141.8 677 382.481 469 3204 175.1 683 385.457 491 3563 185.8 687 388.394 465 2942 141.4 693 391.200 465 3678 184.5 697 393.824 339 3529 186.7 701 395.860 610 5733 302.8 707 398.559 583 6710 349.3 716 404.349 380 4156 213.5 721 407.528 340 1673 88.5 726 410.886 396 1513 73.3 731 414.367 431 1151 56.6 736 417.867 472 984 48.7 741 421.245 722 863 40.7 746 424.396 1641 907 43.4 751 427.266 748 904 41.8 756 429.883 440 989 42.3 761 432.246 457 974 44.4 766 434.405 350 828 38.1 771 436.404 399 716 32.0 776 438.268 470 734 30.8 781 439.980 462 799 39.4 786 441.691 414 994 47.1 796 444.882 402 838 44.5 801 446.439 414 720 34.7 805 447.695 422 719 34.1 811 449.578 468 924 42.8 816 451.198 398 970 40.6 821 452.880 487 1196 56.0 826 454.648 379 1374 67.9 831 456.514 452 1051 54.4 836 458.488 452 1116 53.9 841 460.561 371 1484 71.9 846 462.702 329 1683 82.1 851 464.874 393 1820 89.6 856 467.044 417 2181 108.0 861 469.204 417 2536 137.3 866 471.364 340 4256 210.5 871 473.552 235 5467 286.3 876 475.802 191 6663 341.7 881 478.160 218 5426 272.0 886 480.685 223 4860 214.9 891 486.557 310 2232 114.3 896 488.347 355 1879 91.5 901 490.137 326 1547 68.8 906 494.360 445 1477 67.7 911 499.311 460 1645 81.8 916 504.386 415 1724 80.2 921 509.461 418 1629 73.2 926 513.191 440 1479 69.2 931 516.125 480 1394 60.2 936 518.577 504 1195 51.7 941 520.764 516 1050 45.1 946 522.813 528 937 43.9 951 524.857 563 890 39.1 956 526.901 537 905 40.8 961 529.161 526 1025 43.0 966 531.803 525 1193 48.6 971 535.253 414 1292 56.2 976 540.738 513 1004 45.8 981 550.518 545 1045 45.7 986 558.998 431 1358 60.8 991 567.759 363 1656 79.1 996 569.521 340 1892 92.3 1001 571.282 324 1951 96.1 1007 573.396 340 2481 93.4 1012 575.470 320 2053 102.6 1017 577.404 293 3156 106.4 1022 579.267 336 1993 84.7 1027 581.114 346 1659 61.2 1032 582.993 472 1304 46.3 1037 584.954 450 1254 60.2 1042 587.038 489 817 48.9 1047 589.278 427 1079 50.8 1052 591.672 369 1225 55.3 1057 594.186 334 1432 71.4 1062 596.769 398 1478 66.4 1067 599.392 434 1299 63.7 1072 602.071 462 1336 56.9 1077 604.871 377 1445 70.7 1082 607.888 362 1418 61.3 1087 611.256 413 1134 48.3 1092 615.136 489 1060 50.1 1097 619.696 512 947 44.2 1102 624.963 452 1229 51.4 1107 630.624 498 1079 36.5 1112 636.057 539 1108 42.3 1117 640.845 502 891 41.4 1122 645.015 495 1109 37.6 1127 648.716 530 1120 35.1 1137 655.137 583 697 34.2 1142 657.928 610 806 32.4 1147 660.464 541 577 23.4 1151 662.789 580 872 27.4 1156 664.678 613 642 29.3 1161 666.566 563 1636 27.8 1166 668.517 558 977 39.7 1171 670.412 490 833 33.8 1176 672.286 381 992 52.2 1186 676.132 491 1137 66.8 1191 678.094 520 1320 55.9 1196 680.199 495 748 62.3 1201 682.444 358 2056 104.5 1206 684.866 355 1802 92.1 1211 687.518 450 1538 72.7 1216 690.598 534 936 36.6 1221 693.677 523 808 37.4 1226 697.393 571 719 26.5 1231 701.109 622 648 26.0 1236 705.198 616 575 27.3 1241 709.287 651 590 24.1 1246 713.205 579 671 35.8 1251 716.822 578 932 41.4 1256 720.155 496 1345 53.3 1261 723.303 477 1074 45.7 1266 726.409 604 898 -999 1271 729.641 665 817 31.2 1276 733.217 509 521 17.6 1281 737.980 700 722 34.7 1286 742.743 728 672 25.3 1291 749.075 819 799 20.4 1296 755.289 722 545 28.8 1301 760.433 683 567 22.3 1306 763.858 637 717 44.3 1311 767.284 566 1062 68.6 1316 770.709 682 1356 70.6 1321 773.149 550 1517 78.6 1326 775.323 470 2006 119.7 1331 777.318 432 2324 124.0 1336 779.195 386 2699 161.0 1341 781.002 379 2201 110.4 1346 782.776 496 972 48.9 1351 784.195 562 726 38.6 1356 786.358 581 581 28.3 1361 788.226 667 719 31.7 1366 790.196 573 763 37.9 1371 792.324 549 1151 59.6 1376 794.694 551 1316 -999 1381 797.455 554 1379 65.1 1386 800.868 612 1187 71.9 1391 805.477 600 1346 77.5 1396 812.065 475 1615 82.8 1401 818.532 419 1515 78.2 1406 826.045 480 1906 111.4 1411 832.193 467 2113 111.2 1416 837.321 359 3195 177.2 1421 842.449 460 2242 127.4 1426 847.666 421 2726 141.0 1431 853.857 494 1629 74.3 1436 861.044 607 1439 61.9 1441 867.232 589 1959 68.4 1446 872.446 594 1356 68.7 1451 877.495 362 1253 60.8 1456 882.968 421 1214 66.5 1461 889.367 551 1123 74.0 1466 896.906 549 1598 89.1 1471 905.137 572 1514 76.6 1476 912.781 634 850 52.9 1481 918.605 667 886 52.8 1486 922.938 759 767 118.8 1491 926.036 663 967 49.6 1496 929.133 681 1250 67.4 1501 932.231 710 1440 65.6 1506 935.328 481 2324 136.3 1511 937.981 342 3391 179.6 1516 940.634 327 2076 120.5 1521 943.531 421 2262 122.0 1526 946.772 503 1654 82.9 1531 951.043 559 1204 59.6 1536 955.313 636 1177 54.1 1541 961.424 707 1538 77.7 1546 967.486 541 2252 109.7 1551 977.991 494 2520 122.4 1556 987.049 700 1254 57.0 1561 995.896 783 768 32.3 1566 1004.765 606 1498 75.9 1571 1013.561 597 1309 69.3 1576 1021.505 708 836 44.3 1582 1028.413 746 1018 48.7 1586 1034.904 740 889 38.0 1591 1040.087 770 1479 73.0 1594 1045.269 772 2089 106.0