# NOAA Paleoclimatology Program - Paleocean Site Data # sk157_4-fwc.txt # Complete Data # File Created: 08-Aug-2008 # #********************************************************************************* # Please cite the contributor and the original publications when using these data #********************************************************************************* # # Missing Values indicated by '-999' # # PI: R. Saraswat # Core/Site: SK 157/4 # Latitude: 2.40.00N ( 2.66667) # Longitude: 78.00.00E ( 78) # Water Depth(m): 3500 # # Publications: # Saraswat, R., R. Nigam, S. Weldeab, A. Mackensen, and P.D. Naidu. 2005. A first # look at past sea surface temperatures in the equatorial Indian Ocean from Mg/Ca # in foraminifera. Geophys. Res. Lett., 32, L24605. # Dekens, P.S., D.W. Lea, D.K. Pak, and H.J. Spero. 2002. Core top calibration # of Mg/Ca in tropical foraminifera: Refining paleo-temperature estimation. Geochemistry, # Geophysics, Geosystems 3:1022. #------------------ # # Description & Notes: # Equatorial Indian Ocean 130kyr Mg/Ca Data and SST Reconstruction # The Mg/Ca ratio was converted to SST using the depth corrected G. ruber Mg/Ca-SST # calibration of Dekens et al. [2002]: (Mg/Ca = 0.38 exp 0.09 [SST - 0.61 (core # depth km)]). # # Variables: # depth Depth (cm) # yrBP radiocarbon years B.P. (Libby half-life; B.P. = 1950) # Mg/Ca Magnesium/Calcium ratio # sst-mg/ca Sea surface temperature from Mg/Ca # # CORE: SK 157/4 depth yrBP Mg/Ca sst-mg/ca 5 5434.4 3.932 28.098 6 5773.3 3.925 28.079 7 6112.2 4.071 28.485 9 6790 3.77 27.632 10 7128.9 4.051 28.431 12 7806.7 4.224 28.894 14 8484.4 3.951 28.153 16 9162.2 4.045 28.414 18 9840 4.099 28.562 20 10320 4.11 28.592 22 10800 4.19 28.804 24 11546 4.071 28.484 26 12292 4.078 28.503 28 13038 4.04 28.399 30 13784 4.016 28.333 32 14530 3.879 27.947 34 16326.7 3.944 28.133 36 18123.3 4.032 28.379 37 19021.7 3.903 28.018 38 19920 3.767 27.623 40 20862.5 3.555 26.979 42 21805 3.606 27.136 43 22276.2 3.42 26.549 44 22747.5 3.43 26.582 46 23690 3.721 27.487 48 24632.5 3.484 26.754 50 25575 3.539 26.928 52 26517.5 3.644 27.253 54 27460 3.59 27.086 56 27907.7 3.515 26.853 58 28355.5 3.576 27.043 60 28803.2 3.682 27.369 62 29250.9 3.647 27.261 64 29698.6 3.628 27.205 66 30146.4 3.598 27.114 68 30594.1 3.563 27.004 70 31041.8 3.599 27.116 72 31489.5 3.527 26.89 74 31937.3 3.43 26.583 76 32385 3.497 26.798 78 32832.7 3.401 26.488 80 33280.5 3.576 27.045 82 33728.2 3.67 27.333 84 34175.9 3.73 27.511 86 34623.6 3.744 27.553 88 35071.4 3.581 27.059 92 35966.8 3.612 27.155 94 36414.5 3.657 27.292 96 36862.3 3.615 27.166 98 37310 3.871 27.926 100 38440 3.607 27.14 102 39570 3.669 27.331 104 40700 3.407 26.506 106 41830 3.522 26.874 108 42960 3.562 27 110 44090 3.659 27.299 112 45220 3.55 26.962 114 46350 3.617 27.172 116 47480 3.51 26.838 118 48610 3.571 27.03 120 49740 3.63 27.211 122 50870 3.728 27.507 124 52000 3.479 26.738 126 53000 3.564 27.008 128 54000 3.529 26.896 130 55000 3.875 27.935 132 56000 3.791 27.693 134 57000 3.823 27.787 136 59666.7 3.525 26.884 138 62333.3 3.528 26.895 140 65000 3.401 26.488 142 66500 3.659 27.298 144 68000 3.48 26.74 146 69500 3.741 27.545 148 71000 3.496 26.792 156 75000 3.503 26.816 158 76000 3.646 27.26 160 77000 3.765 27.616 162 77777.8 3.804 27.731 164 78555.6 3.606 27.138 166 79333.3 3.948 28.143 168 80111.1 3.789 27.687 170 80888.9 3.682 27.368 172 81666.7 3.681 27.366 174 82444.4 3.577 27.048 176 83222.2 3.769 27.629 178 84000 3.605 27.134 180 85000 3.888 27.975 182 86000 3.793 27.698 184 87000 3.682 27.367 186 88000 3.735 27.527 188 89000 3.824 27.789 190 90000 3.918 28.06 192 91000 3.909 28.034 194 92000 3.954 28.161 196 93000 3.793 27.698 198 94000 3.868 27.916 200 95000 3.93 28.094 202 96000 3.77 27.631 204 97000 3.968 28.2 206 98000 3.864 27.904 208 99000 3.821 27.779 210 100000 3.811 27.751 212 101466.7 3.836 27.823 214 102933.3 3.813 27.758 216 104400 3.865 27.908 218 105866.7 3.666 27.32 220 107333.3 3.706 27.442 222 108800 3.843 27.844 224 110266.7 3.833 27.817 226 111733.3 4.038 28.394 228 113200 4.056 28.443 230 114666.7 4.306 29.109 232 116133.3 3.858 27.886 234 117600 4.098 28.557 236 119066.7 4.46 29.499 238 120533.3 4.007 28.308 240 122000 4.637 29.932 244 124000 4.345 29.207 246 125000 4.075 28.496 248 126000 4.212 28.864 250 127000 4.068 28.477 252 128333.3 3.819 27.776 254 129666.7 3.866 27.91 256 131000 3.691 27.397 258 131800 3.647 27.262 260 132600 3.658 27.296 262 133400 3.876 27.94 264 134200 3.691 27.396 266 135000 3.67 27.331 268 136166.7 3.752 27.578 270 137333.3 3.627 27.202