# Florida Straits KNR166–2JPC51 9000 Year d18O, Mg/Ca SST, and d18Osw Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original reference when using these data, # plus the Online Resource and date accessed. # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/13608 # # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/schmidt2012/schmidt2012.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Paleoceanography #-------------------- # Contribution_Date # Date: 2012-12-12 #-------------------- # Title # Study_Name: Florida Straits KNR166–2JPC51 9000 Year d18O, Mg/Ca SST, and d18Osw Data #-------------------- # Investigators # Investigators: Schmidt, M.W.; Weinlein, W.A.; Marcantonio, F.; Lynch-Stieglitz, J. #-------------------- # Description_and_Notes # # High resolution (~25 year) Holocene d18O, Mg/Ca-paleothermometry, and reconstructed d18OSW measurements on the planktonic foraminifera Globigerinoides ruber (white variety) from Florida Straits. # #-------------------- # Publication # Authors: Matthew W. Schmidt, William A. Weinlein, Franco Marcantonio, and Jean Lynch-Stieglitz. # Published_Date_or_YEAR: 2012-07-19 # Published_Title: Solar forcing of Florida Straits surface salinity during the early Holocene # Journal_Name: Paleoceanography # Volume: 27 # Issue: PA3204 # Pages: # DOI: 10.1029/2012PA002284 # Abstract: Previous studies showed that sea surface salinity (SSS) in the Florida Straits as well as Florida Current transport covaried with changes in North Atlantic climate over the past two millennia. However, little is known about earlier Holocene hydrographic variability in the Florida Straits. Here, we combine Mg/Ca-paleothermometry and stable oxygen isotope measurements on the planktonic foraminifera Globigerinoides ruber (white variety) from Florida Straits sediment core KNR166-2 JPC 51 (24 deg 24.70'N, 83 deg 13.14'W, 198 m deep) to reconstruct a high-resolution (~25 yr/sample) early to mid Holocene record of sea surface temperature and d18OSW (a proxy for SSS) variability. After removing the influence of global d18OSW change due to continental ice volume variability, we find that early Holocene SSS enrichments are associated with increased evaporation/precipitation ratios in the Florida Straits during periods of reduced solar forcing, increased ice rafted debris in the North Atlantic and the development of more permanent El Niño-like conditions in the eastern equatorial Pacific. When considered with previous high-resolution reconstructions of Holocene tropical atmospheric circulation changes, our results provide evidence that variations in solar forcing over the early Holocene had a significant impact on the global tropical hydrologic cycle. # #--------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: OCE-0823498 #--------------------- # Site_Information # Site_Name: KNR166–2JPC51 # Location: Ocean>Atlantic Ocean>North Atlantic Ocean>Gulf Of Mexico # Country: # Northernmost_Latitude: 24.4117 # Southernmost_Latitude: 24.4117 # Easternmost_Longitude: -83.219 # Westernmost_Longitude: -83.219 # Elevation: -198 m #------------------ # Data_Collection # Core_Name: KNR166–2JPC51schmidt2012 # First_Year: 9149 # Last_Year: 1488 # Time_Unit: calYrBP # Core_Length: 5.545 # Notes: #------------------ # Chronology # # Table 1. AMS 14C and Calendar Ages # # Core Depth (cm) CAMS# 14C Age Error(years) Cal.Age (KyrsBP) Error(years) # JPC51 5.25 40017 1940 40 1.49 110 # JPC51 159.25 49009 4040 45 4.07 146 # JPC51 312.25 40018 5970 60 6.4 131 # JPC51 394.5 76076 6880 40 7.39 87 # JPC51 480.25 40019 7520 70 7.99 152 # JPC51 494.5 76077 7610 35 8.07 90 # JPC51 632.25 40020 9690 75 10.56 194 # #------------------ # Variables # # End Description/Documentation (lines begin with #) # Data lines follow (have no #) # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: material, error, units, anomaly, period, archive, detail, method, C or N for Character or Numeric data) # Data line format: tab-delimited text, variable short name as header ## depth_cm Depth (cm), , , cm, , , , , N ## age_calkaBP Age (calendar ka BP), , ,cal kyr BP, , , , N ## d18Ovg.rub-w250-355 delta 18O Globigerinoides ruber white 250-355 micron (per mil VPDB), , , per mil VPDB, , , , , N ## Mg/Ca-g.rub-w Magnesium/Calcium Globigerinoides ruber white (mmol/mol), , , mmol/mol, , , , , N ## sst Sea Surface Temperature (C), , , C, , , , , N ## d18Osw-g.rub-w delta 18O seawater Globigerinoides ruber white (per mil SMOW), , , per mil SMOW, , , , , N ## d18Osw-ivc-g.rubw delta 18O seawater Globigerinoides ruber white corrected for ice volume (per mil SMOW), , , per mil SMOW, , , , , N #------------------------ # Data: # Missing Value: depth_cm age_calkaBP d18Ovg.rub-w250-355 Mg/Ca-g.rub-w sst d18Osw-g.rub-w d18Osw-ivc-g.rubw 5.25 1.488 -1.61 4.346 27.1 0.86 0.86 8.25 1.538 -1.50 4.377 27.2 0.99 0.99 16.25 1.671 -1.67 4.504 27.5 0.89 0.89 24.25 1.805 -1.33 4.793 28.2 1.37 1.37 32.25 1.938 -1.69 4.804 28.2 1.01 1.01 40.25 2.072 -1.60 4.825 28.2 1.11 1.11 48.25 2.205 -1.88 4.535 27.5 56.25 2.339 -1.62 4.758 28.1 1.06 1.06 64.25 2.473 -1.84 4.612 27.7 0.77 0.77 72.25 2.606 -1.98 4.596 27.7 0.62 0.62 80.25 2.740 -1.60 4.811 28.2 88.25 2.873 -2.00 4.532 27.5 0.57 0.57 96.25 3.007 -1.43 4.738 28.0 104.25 3.140 -1.92 4.396 27.2 0.58 0.58 112.25 3.274 -1.89 4.736 28.0 0.78 0.78 120.25 3.408 -1.91 5.007 28.6 0.89 0.89 128.25 3.541 -1.76 4.937 28.5 1.01 1.01 143.25 3.792 -1.64 4.711 28.0 1.02 1.02 151.25 3.933 -1.87 159.25 4.067 -1.86 4.985 28.6 0.93 0.93 167.25 4.189 -1.43 4.924 28.5 1.33 1.33 176.25 4.319 -1.40 5.062 28.8 1.43 1.43 184.25 4.441 -1.88 4.860 28.3 0.85 0.85 192.25 4.563 -1.70 4.693 27.9 0.95 0.96 200.25 4.686 -1.76 4.767 28.1 0.92 0.93 208.25 4.808 -1.83 4.446 27.3 0.69 0.70 216.25 4.930 -1.76 4.809 28.2 0.94 0.95 224.25 5.052 -1.97 4.774 28.1 0.72 0.73 232.25 5.174 -1.80 4.529 27.5 0.77 0.78 240.25 5.296 -1.75 4.803 28.2 0.95 0.96 248.25 5.419 -1.69 4.712 28.0 0.97 0.98 256.25 5.541 -1.92 5.180 29.0 0.96 0.97 264.25 5.663 -1.57 5.131 28.9 1.29 1.30 272.25 5.785 -1.70 4.903 28.4 1.05 1.06 280.25 5.907 -1.71 4.937 28.5 1.06 1.06 288.25 6.029 -1.52 5.236 29.1 1.39 1.40 296.25 6.152 -1.81 4.866 28.3 0.93 0.93 300.5 6.213 -1.66 4.957 28.5 1.12 1.12 302.5 6.243 -1.88 4.690 27.9 0.77 0.77 304.25 6.274 -2.05 5.135 28.9 0.81 0.81 306.5 6.304 -1.61 4.633 27.8 1.01 1.01 308.5 6.335 -1.62 4.800 28.2 1.08 1.08 310.5 6.365 -1.54 4.765 28.1 1.15 1.15 312.25 6.396 -1.56 4.911 28.4 1.20 1.20 314.5 6.420 -1.88 4.689 27.9 0.77 0.77 316.5 6.444 -1.50 4.673 27.9 1.14 1.14 318.5 6.469 -1.98 4.983 28.6 0.81 0.81 320.25 6.493 -1.38 5.111 28.9 1.47 1.47 322.5 6.517 -1.71 4.872 28.3 1.03 1.03 324.5 6.541 -1.82 4.734 28.0 0.85 0.85 326.5 6.566 -1.68 5.065 28.8 1.15 1.15 328.25 6.590 -1.59 4.742 28.0 1.09 1.08 330.5 6.614 -2.04 4.726 28.0 0.62 0.61 332.5 6.638 -1.86 4.557 27.6 0.73 0.72 334.5 6.662 -1.32 5.105 28.9 1.53 1.52 336.25 6.687 -1.91 4.804 28.2 0.79 0.78 338.5 6.711 -1.61 4.639 27.8 1.02 1.00 340.5 6.735 -1.82 4.718 28.0 0.85 0.83 342.5 6.759 -1.60 4.763 28.1 1.09 1.07 344.25 6.784 -1.66 4.745 28.1 1.02 1.00 346.5 6.808 -1.68 4.543 27.6 0.90 0.88 348.5 6.832 -1.66 4.487 27.4 0.88 0.85 350.5 6.856 -1.82 4.811 28.2 0.89 0.86 352.25 6.880 -1.66 4.898 28.4 1.09 1.06 354.5 6.905 -1.91 4.293 26.9 0.53 0.50 356.5 6.929 -1.83 4.710 28.0 0.83 0.80 358.5 6.953 -1.86 4.542 27.6 0.72 0.68 360.25 6.977 -1.82 4.339 27.1 0.65 0.61 362.5 7.001 -1.73 4.296 26.9 0.72 0.68 364.5 7.026 -1.83 4.253 26.8 0.59 0.55 366.5 7.050 -1.47 4.412 27.2 1.04 1.00 368.25 7.074 -1.94 5.103 28.9 0.90 0.86 370.25 7.098 -1.78 4.734 28.0 0.89 0.84 372.25 7.123 -1.66 4.554 27.6 0.93 0.88 374.5 7.147 -1.80 4.471 27.4 0.74 0.69 376.25 7.171 -1.58 4.684 27.9 1.07 1.02 378.5 7.195 -1.85 4.940 28.5 0.92 0.86 380.5 7.219 -1.67 5.008 28.7 1.13 1.07 382.5 7.244 -1.67 4.582 27.7 0.92 0.86 384.25 7.268 -1.85 4.874 28.3 0.89 0.83 386.5 7.292 -1.66 5.064 28.8 1.17 1.11 388.5 7.316 -1.91 4.543 27.6 390.5 7.341 -1.45 4.698 27.9 1.21 1.15 392.25 7.365 -1.63 4.615 27.7 0.98 0.92 394.5 7.389 -1.34 4.701 27.9 1.32 1.26 396.5 7.403 -1.68 4.624 27.8 0.94 0.88 398.5 7.417 -1.35 4.832 28.3 1.37 1.31 400.25 7.431 -1.50 4.575 27.6 1.10 1.04 402.5 7.445 -1.56 4.697 27.9 1.10 1.04 404.5 7.459 -1.60 4.735 28.0 1.07 1.01 406.5 7.473 -1.34 4.884 28.4 1.40 1.33 408.25 7.487 -1.68 4.629 27.8 0.94 0.87 410.5 7.501 -1.49 4.621 27.8 1.13 1.06 412.5 7.515 -1.51 4.926 28.5 1.25 1.18 414.5 7.529 -1.63 4.645 27.8 1.00 0.92 416.25 7.544 -1.42 4.549 27.6 1.16 1.08 418.5 7.558 -1.70 4.761 28.1 0.98 0.90 420.5 7.572 -1.40 4.661 27.9 1.24 1.16 422.5 7.586 -1.23 4.725 28.0 1.43 1.35 424.25 7.600 -1.46 4.528 27.5 1.11 1.03 426.5 7.614 -1.30 4.920 28.5 1.46 1.38 428.5 7.628 -1.49 4.411 27.2 1.02 0.94 430.5 7.642 -1.36 4.294 26.9 1.08 1.00 432.25 7.656 -1.89 4.637 27.8 434.5 7.670 -1.49 5.041 28.7 1.32 1.24 436.5 7.684 -1.68 5.027 28.7 1.13 1.05 438.5 7.698 -1.93 4.684 27.9 0.72 0.64 440.25 7.712 -1.96 4.981 28.6 0.83 0.74 442.5 7.726 -1.67 4.942 28.5 1.10 1.01 446.5 7.754 -1.62 4.579 27.7 0.97 0.87 448.25 7.768 -1.55 4.660 27.9 1.09 0.99 450.5 7.782 -1.37 4.633 27.8 1.25 1.14 452.5 7.796 -1.85 4.799 28.2 0.85 0.73 454.5 7.810 -1.81 4.709 28.0 0.85 0.73 456.25 7.824 -1.40 4.576 27.7 1.19 1.06 458.5 7.838 -1.73 5.047 28.7 1.09 0.96 460.5 7.853 -1.64 4.750 28.1 1.04 0.91 462.5 7.867 -1.73 4.744 28.1 0.95 0.82 464.25 7.881 -1.78 4.876 28.4 0.96 0.83 466.5 7.895 -2.01 4.833 28.3 0.71 0.58 468.5 7.909 -1.76 5.193 29.1 1.13 1.00 470.25 7.923 -1.53 5.164 29.0 1.35 1.21 472.25 7.937 -1.69 5.190 29.0 1.19 1.05 474.5 7.951 -1.77 4.828 28.2 0.95 0.81 476.5 7.965 -1.59 4.943 28.5 1.18 1.04 478.5 7.979 -1.73 5.283 29.2 1.19 1.05 480.25 7.993 -1.60 5.176 29.0 1.28 1.14 482.5 8.004 -2.06 4.858 28.3 484.5 8.015 -1.51 4.751 28.1 1.17 1.03 486.5 8.025 -1.62 5.350 29.4 1.33 1.19 488.25 8.036 -1.52 5.216 29.1 1.38 1.24 490.5 8.047 -1.52 4.854 28.3 1.21 1.07 492.5 8.058 -1.61 5.281 29.2 1.32 1.18 494.5 8.069 -1.63 5.196 29.1 1.25 1.11 496.25 8.105 -1.44 4.843 28.3 1.29 1.15 498.5 8.141 -1.67 4.715 28.0 1.00 0.86 500.5 8.177 -1.49 4.744 28.0 1.18 1.04 502.5 8.213 -1.51 4.479 27.4 1.03 0.89 504.25 8.249 -1.49 5.363 29.4 1.47 1.33 506.5 8.285 -1.62 5.157 29.0 1.25 1.11 508.5 8.321 -1.52 4.617 27.7 1.10 0.96 510.5 8.357 -1.57 4.862 28.3 1.16 1.02 512.5 8.393 -1.54 4.896 28.4 1.21 1.06 514.5 8.429 -1.64 4.440 27.3 0.89 0.74 516.5 8.465 -1.47 4.798 28.2 1.23 1.07 518.5 8.501 -1.57 4.738 28.0 1.10 0.94 520.5 8.537 -1.64 4.630 27.8 0.98 0.81 522.5 8.573 -1.78 4.646 27.8 0.85 0.68 524.5 8.609 -1.66 4.865 28.3 1.08 0.91 526.5 8.645 -1.72 4.920 28.5 1.04 0.87 528.5 8.681 -1.54 5.338 29.4 1.40 1.23 529.25 8.699 -1.51 4.826 28.2 1.20 1.03 532.5 8.753 -1.72 5.108 28.9 1.12 0.95 534.5 8.789 -1.58 4.415 27.2 0.93 0.75 536.25 8.825 -1.76 5.282 29.2 1.17 0.99 538.5 8.861 -1.59 4.529 27.5 0.98 0.80 540.5 8.897 -1.47 4.896 28.4 1.28 1.08 542.5 8.933 -1.54 4.858 28.3 1.19 0.99 544.25 8.969 -1.48 4.849 28.3 1.24 1.04 546.5 9.005 -1.69 4.626 27.8 0.93 0.73 548.5 9.041 -1.62 4.741 28.0 1.05 0.85 550.5 9.077 -1.79 4.508 27.5 552.25 9.113 -1.61 4.973 28.6 1.18 0.98 554.5 9.149 -1.98 4.809 28.2