Crosta and Shemesh (2002) Southern Ocean Carbon and Nitrogen Isotopic Ratios. Core IO1270-10 52 20'S, 20 47'E, 2740m water depth IO1277-10 Raw data (non smoothed) Depth d13Cdiat d15Ndiat (cm) (vs PDB) (vs Air) 13 -18.77 3.38 24 -19.43 3.75 32 -19.5 2.22 46 -18.95 2.78 53 -19.42 3.2 65 -19.48 75 -20.5 3.05 85 -19.27 2.698 103 -19.23 2.374 124 -18.95 143 -18.83 2.753 186 -19.04 3.294 205 -19.2 2.28 224 -18.82 2.68 245 -19.44 3.233 264 -19.44 3.488 285 -18.85 2.763 305 -18.85 3.097 325 -18.56 355 -19.14 367 -18.95 3.4 385 -20.06 3.546 405 -18.64 3.78 423 -19.04 444 -18.5 3.04 465 -18.64 3.67 485 -19.25 3.505 505 -18.51 3.511 526 -18.51 4.07 545 -18.97 3.4 565 -18.06 3.803 586 -19.19 3.91 606 -19.01 625 -18.83 3.79 645 -19.07 3.43 666 -19.31 3.485 685 -19.28 2.94 706 -19.95 725 -18.98 2.334 745 -20.9 3.848 757 -22.58 4.985 785 -23.65 6.09 804 -23.44 5.235 825 -22.98 4.72 845 -23.69 5.015 865 -23.38 5.128 885 -23.44 5.033 905 -23.07 4.745 925 -21.9 4.79 945 -21.77 4.285 965 -22.29 4.26 985 -21.59 4.09 1005 -21.46 4.745 1025 -20.82 3.605 1045 -21.48 4.29 1085 -21.67 4.12 1105 -21.53 3.46 1125 -19.97 2.395 1145 -21.26 4.025 1165 -19.77 3.46 1185 -18.92 2.707 1207 -18.57 2.82