Chatham Rise Alkenone and Foraminiferal SST Estimates ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!! NAME OF DATA SET: Chatham Rise Alkenone and Foraminiferal SST Estimates LAST UPDATE: 4/2002 (Original Receipt by WDC Paleo) CONTRIBUTOR: Elisabeth Sikes, Rutgers University IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2002-030 SUGGESTED DATA CITATION: Sikes, E.L., et al., 2002, Chatham Rise Alkenone and Foraminiferal SST Estimates, IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2002-030. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Sikes, E.L., W.R. Howard, H.L. Neil, and J.K. Volkman, 2002, Glacial-interglacial sea surface temperature changes across the subtropical front east of New Zealand based on alkenone unsaturation ratios and foraminiferal assemblages, Paleoceanography, v17, No. 2, April 2002. FUNDING SOURCE: Australian Research Council (ARC) Australia GEOGRAPHIC REGION: Chatham Rise, Southwest Pacific Ocean and Southern Ocean PERIOD OF RECORD: 0-130 KYrBP LIST OF FILES: sikes2002.xls (Microsoft Excel format) sikes2002.txt (tab-delimited text file). DESCRIPTION: Sikes et al. 2002 Chatham Rise Alkenone and Foraminiferal SST Estimates Core Side of Rise Lat Long Depth(m) Length(m) Tephra Depth(cm) R657 North 42°32'S 179°29'55E 1408 3.03 none seen W268 North 42°51'03S 178°58'16E 980 0.71 22-24 U938 South 45°04.5'S 179°30'E 2700 4.1 127-131 U939 South 44°32'S 179°30'E 1300 3.39 76-83 Uk'37 SST's calculated using 2 different calibrations: Sikes and Volkman [1993] calibration 9Uk'37= 0.0414T-0.156) (designated S&V) and Prahl and Wakeham [1998] (Uk'37 = 0.034T+0.039) (designated P&W) Data 1995 one sigma =1.0 °C Antarctic CRC/CSIRO Oceanography (Dr. E. Sikes' and Dr. J. Volkman's labs) Foraminiferal SST's determined with Modern Analog Technique (MAT) Using Southern Ocean core-top set, Data 1997, one sigma = 2 °C Antarctic CRC (Dr. W. Howard) Age determined by interpolation between stage picks, one sigma N/A DATA: Temperature estimates Core depth age U-K37 MAT estimated estimated warm cool dissim. summer subsurface (cm) (years) T(°C) T(°C) T (°C) T (°C) R657 1 1000 0.670 20.0 18.6 18.1 13.3 0.016 11 4452 0.557 17.2 15.2 20.2 15.6 0.009 21 8903 0.520 16.3 14.1 18.1 13.0 0.010 31 14355 0.476 15.3 12.8 15.5 10.7 0.013 41 16272 0.425 14.0 11.4 51 18188 0.343 13.5 8.9 13.9 8.2 0.032 61 20105 0.437 14.3 11.7 71 22022 0.465 15.0 12.5 13.7 9.0 0.015 81 25855 0.479 15.3 13.0 91 31605 0.474 15.2 12.8 101 39272 0.445 14.5 11.9 111 48855 0.468 15.1 12.6 121 60355 0.470 15.1 12.7 130 64429 14.6 8.4 0.024 150 83057 15.9 10.1 0.014 Temperature estimates Core depth age U-K37 MAT estimated estimated warm cool dissim. summer subsurface (cm) (years) T(°C) T(°C) T (°C) T (°C) U938 1 1000 0.416 13.8 11.1 14.7 9.4 0.154 11 3879 0.391 13.2 10.4 12 4280 14.0 9.3 0.113 21 6759 0.381 13.0 10.1 22 7263 13.1 8.5 0.106 31 9593 0.423 14.0 11.3 32 9714 13.3 9.2 0.073 41 10806 0.449 14.6 12.1 42 10928 13.3 8.7 0.096 51 12020 0.452 14.7 12.1 52 12156 13.7 9.1 0.092 56 12706 0.430 14.1 11.5 61 13393 0.392 13.2 10.4 62 13511 13.5 9.0 0.089 66 14079 0.343 12.0 8.9 71 14765 0.332 11.8 8.6 72 14866 12.3 7.9 0.087 76 15452 0.286 10.7 7.3 77 15543 13.0 8.3 0.123 81 16138 0.257 10.0 6.4 86 16825 0.284 10.6 7.2 86 16825 0.270 10.3 6.8 87 16898 10.7 7.1 0.105 91 17511 0.270 10.3 6.8 92 17576 12.3 7.9 0.073 100 18746 0.257 10.0 6.4 102 18931 7.3 4.3 0.085 110 20119 0.261 10.1 6.5 130 22807 6.8 3.8 0.122 132 23350 0.318 11.4 8.2 140 25333 7.5 4.5 0.043 151 28654 0.268 10.2 6.7 171 34714 0.291 10.8 7.4 191 40773 0.254 9.9 6.3 211 47033 0.247 9.7 6.1 231 53146 0.263 10.1 6.6 261 62315 0.345 12.1 9.0 281 68428 0.277 10.5 7.0 311 77573 0.235 9.5 5.8 331 83678 0.325 11.6 8.4 371 95888 0.353 12.3 9.2 Temperature estimates Core depth age U-K37 MAT estimated estimated warm cool dissim. summer subsurface (cm) (years) T(°C) T(°C) T (°C) T (°C) U939 1 1000 0.414 13.8 11.0 6 2380 0.413 13.7 11.0 11 3759 0.417 13.9 11.1 21 6519 0.407 13.6 10.8 26 7898 0.403 13.5 10.7 31 9278 0.399 13.4 10.6 36 11266 0.418 13.9 11.1 41 13060 0.415 13.8 11.1 46 13673 0.384 13.0 10.1 51 14440 0.343 12.1 8.9 56 15207 0.290 10.8 7.4 61 15973 0.271 10.3 6.8 71 17507 0.288 10.7 7.3 86 24110 0.307 11.2 7.9 96 29265 0.289 10.8 7.4 106 34420 0.271 10.3 6.8 116 39574 0.279 10.5 7.1 126 44729 0.290 10.8 7.4 136 49884 0.307 11.2 7.9 146 55039 0.339 12.0 8.8 156 60035 0.358 12.4 9.4 166 64660 0.333 11.8 8.6 176 69285 0.397 13.4 10.5 186 73910 0.350 12.2 9.2 196 80901 0.319 11.5 8.2 206 87893 0.390 13.2 10.3 216 94884 0.386 13.1 10.2 226 101875 0.432 14.2 11.5 236 108866 0.472 15.2 12.7 246 115858 0.524 16.4 14.3 266 129840 0.486 15.5 13.1 286 143823 0.330 11.7 8.6 286 143823 0.311 11.3 8.0 306 157805 0.343 12.0 8.9 Temperature estimates Core depth age U-K37 MAT estimated estimated warm cool dissim. summer subsurface (cm) (years) T(°C) T(°C) T (°C) T (°C) W268 1 1000 0.538 16.8 14.7 3.25 3416 0.541 16.8 14.8 5.5 5832 0.474 15.2 12.8 8 8948 0.544 16.9 14.9 10.5 13182 0.405 13.6 10.8 13 14991 0.519 16.3 14.1 15.5 16800 0.450 14.6 12.1 18 18610 0.420 13.9 11.2 20.75 20600 0.458 14.8 12.3 23.5 22590 0.517 16.3 14.1 26 23281 0.454 14.7 12.2 29 24110 0.486 15.5 13.1 32 24939 0.489 15.6 13.2 35 25768 0.474 15.2 12.8 38 26597 0.477 15.3 12.9