Okinawa Trough Oxygen Isotope and Mg/Ca-SST Data
-----------------------------------------------------------------------
World Data Center for Paleoclimatology, Boulder
and
NOAA Paleoclimatology Program
-----------------------------------------------------------------------
NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!!
NAME OF DATA SET: Okinawa Trough Oxygen Isotope and Mg/Ca-SST Data
LAST UPDATE: 11/2005 (Original receipt by WDC Paleo)
CONTRIBUTOR: Youbin Sun, University of Tokyo
IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2005-072
SUGGESTED DATA CITATION: Sun, Y., et al. 2005.
Okinawa Trough Oxygen Isotope and Mg/Ca-SST Data.
IGBP PAGES/World Data Center for Paleoclimatology
Data Contribution Series # 2005-072.
NOAA/NCDC Paleoclimatology Program, Boulder CO, USA.
ORIGINAL REFERENCE:
Sun, Y., D.W. Oppo, R. Xiang, W. Liu, and S. Gao. 2005.
Last deglaciation in the Okinawa Trough: Subtropical northwest
Pacific link to Northern Hemisphere and tropical climate
Paleoceanography, Vol. 20, PA4005, doi:10.1029/2004PA001061
ABSTRACT:
Detailed deglacial and Holocene records of planktonic d18O and Mg/Ca–based
sea surface temperature (SST) from the Okinawa Trough suggest that at ~18
to 17 thousand years before present (kyr B.P.), late spring/early summer
SSTs were approximately 3C cooler than today, while surface waters were up
to 1 practical salinity unit saltier. These conditions are consistent with
a weaker influence of the summer East Asian Monsoon (EAM) than today.
The timing of suborbital SST oscillations suggests a close link with abrupt
changes in the EAM and North Atlantic climate. A tropical influence, however,
may have resulted in subtle decoupling between the North Atlantic and the
Okinawa Trough/EAM during the deglaciation. Okinawa Trough surface water
trends in the Holocene are consistent with model simulations of an inland
shift of intense EAM precipitation during the middle Holocene. Millennial-
scale alternations between relatively warm, salty conditions and relatively
cold, fresh conditions suggest varying influence of the Kuroshio during
the Holocene.
GEOGRAPHIC REGION: Okinawa Trough, Subtropical northwest Pacific
PERIOD OF RECORD: 18 KYrBP - present
FUNDING SOURCES: NSFC (grants 40106006 and 40206007), SKLLQG (grant LLQG0204),
and the NSF (OCE-020776 to DWO).
DESCRIPTION:
Okinawa Trough deglacial and Holocene records of planktonic d18O and Mg/Ca-based
sea surface temperature (SST).
Core A7 (27.82N, 126.98E, 1264 m, middle Okinawa Trough)
DATA:
1. AMS radiocarbon dates
Table 1. AMS radiocarbon and calendar ages for core A7.
AGE1 uses ages estimated from calibration curve MARINE04 [Hughen et al., 2004] with a 400-year reservoir age.
AGE2 uses a 700-year reservoir age.
Accession Depth AMS 14C age AGE1 2s-Error bars AGE2 2s-Error bars
No. (m) (yr BP) (cal. yr BP) (cal. yr BP)
OS-45820 0.02-0.06 1910±30 1450 1366, 1536 1160 1083, 1255
OS-39785 0.32-0.36 2890±35 2690 2528, 2744 2300 2151, 2338
OS-45821 0.64-0.68 4800±35 5040 4951, 5243 4700 4575, 4808
OS-39786 0.94-0.98 6860±45 7400 7275, 7461 7100 6948, 7199
OS-39858 1.20-1.22 8420±45 9000 8905, 9198 8580 8452, 8743
OS-39859 1.44-1.46 9030±65 9700 9524, 9955 9420 9254, 9519
OS-39860 1.74-1.76 10500±60 11700 11354, 11927 11190 11105, 11304
OS-39861 2.04-2.06 10800±65 12300 12009, 12625 11700 11341, 11935
OS-45822 2.22-2.26 10850±45 12350 12116, 12639 11900 11412, 11994
OS-39862 2.58-2.60 11450±70 12940 12870, 13096 12800 12662, 12874
OS-45823 2.86-2.90 12200±50 13680 13483, 13776 13320 13242, 13436
OS-39863 3.20-3.24 12850±60 14400 14176, 14886 14000 13838, 14142
OS-45824 3.46-3.50 13300±55 15200 14981, 15515 14880 14459, 15120
OS-39864 3.70-3.74 13650±75 15680 15322, 16107 15260 15003, 15627
OS-39865 4.42-4.46 15200±90 18000 17569, 18525 17550 16956, 17902
2.
Core A7 Mg/Ca, d18O, and SST estimates
Column 1: Depth (m)
Column 2: Age1 (MARINE04, 400-year reservoir age)
Column 3: Age2 (700-year reservoir age)
Column 4: Mg/Ca (mmol/mol)
Column 5: SST, deg. C
Column 6: d18Oruber
Depth AGE1 AGE2 Mg/Ca SST d18Oruber
0.02 1.367 1.084 4.06 26.62 -2.345
0.04 1.450 1.160 4.14 26.83 -2.31
0.06 1.533 1.236 4 26.45 -2.36
0.08 1.615 1.312 3.92 26.22 -2.26
0.1 1.698 1.388 4.55 27.90 -2.32
0.12 1.781 1.464 4.07 26.64 -2.4
0.14 1.863 1.540 4.02 26.50 -2.22
0.16 1.946 1.616 4.16 26.89 -2.24
0.18 2.029 1.692 4.16 26.89 -2.32
0.2 2.111 1.768 4.11 26.75 -2.41
0.22 2.194 1.844 3.73 25.66 -2.33
0.24 2.277 1.920 3.57 25.17 -2.22
0.26 2.359 1.996 4.12 26.78 -2.13
0.28 2.442 2.072 3.93 26.25 -2.48
0.3 2.525 2.148 3.86 26.05 -2.2
0.32 2.607 2.224 4.2 27.00 -2.62
0.34 2.690 2.300 3.99 26.42 -2.31
0.36 2.837 2.450 4.23 27.08 -2.56
0.38 2.984 2.600 4.36 27.42 -2.14
0.4 3.131 2.750 4.05 26.59 -2.06
0.42 3.278 2.900 4.02 26.50 -2.24
0.44 3.424 3.050 3.83 25.96 -2.48
0.46 3.571 3.200 4.28 27.21 -2.06
0.48 3.718 3.350 3.83 25.96 -2.28
0.5 3.865 3.500 3.67 25.48 -2.26
0.52 4.012 3.650 3.98 26.39 -2.47
0.54 4.159 3.800 3.73 25.66 -2.24
0.56 4.306 3.950 4.03 26.53 -2.33
0.58 4.453 4.100 3.92 26.22 -2.19
0.6 4.599 4.250 3.68 25.51 -2.33
0.62 4.746 4.400 3.85 26.02 -2.21
0.64 4.893 4.550 4 26.45 -2.27
0.66 5.040 4.700 3.98 26.39 -2.14
0.68 5.188 4.850 3.96 26.34 -2.06
0.7 5.335 5.000 4.09 26.70 -2.21
0.72 5.483 5.150 3.93 26.25 -2.25
0.74 5.630 5.300 4.2 27.00 -1.87
0.76 5.778 5.450 3.75 25.72 -2.08
0.78 5.925 5.600 4.11 26.75 -1.95
0.8 6.073 5.750 3.87 26.08 -2.32
0.82 6.220 5.900 4 26.45 -2.08
0.84 6.368 6.050 3.96 26.34 -2.23
0.86 6.515 6.200 3.6 25.26 -2.39
0.88 6.663 6.350 3.61 25.30 -1.67
0.9 6.810 6.500 3.7 25.57 -1.61
0.92 6.958 6.650 3.86 26.05 -1.94
0.94 7.105 6.800 4.18 26.94 -2.34
0.96 7.253 6.950 4.16 26.89 -2.42
0.98 7.400 7.100 3.52 25.01 -1.97
1 7.533 7.223 3.61 25.30 -1.27
1.02 7.667 7.347 3.68 25.51 -1.62
1.04 7.800 7.470 3.64 25.39 -1.71
1.06 7.933 7.593 3.82 25.93 -1.6
1.08 8.067 7.717 4.23 27.08 -2.51
1.1 8.200 7.840 4.37 27.44 -2.26
1.12 8.333 7.963 3.79 25.84 -1.42
1.14 8.467 8.087 3.74 25.69 -2.21
1.16 8.600 8.210 3.9 26.16 -1.65
1.18 8.733 8.333 3.68 25.51 -1.18
1.2 8.867 8.457 4.04 26.56 -1.73
1.22 9.000 8.580 4.05 26.59 -2.25
1.24 9.064 8.656 3.78 25.81 -1.95
1.26 9.127 8.733 4.24 27.10 -1.96
1.28 9.191 8.809 4.01 26.48 -2.33
1.3 9.255 8.885 4.03 26.53 -2.05
1.32 9.318 8.962 3.94 26.28 -2.07
1.34 9.382 9.038 4.14 26.83 -2
1.36 9.445 9.115 4.45 27.65 -1.95
1.38 9.509 9.191 4.27 27.18 -2.03
1.4 9.573 9.267 4.06 26.62 -2.32
1.42 9.636 9.344 4.14 26.83 -2.11
1.44 9.700 9.420 3.65 25.42 -1.93
1.46 9.825 9.531 3.9 26.16 -1.93
1.48 9.950 9.641 4.11 26.75 -2.04
1.5 10.075 9.752 3.62 25.33 -1.66
1.52 10.200 9.863 3.66 25.45 -1.81
1.54 10.325 9.973 3.91 26.19 -2.07
1.56 10.450 10.084 4.07 26.64 -2.3
1.58 10.575 10.194 4.08 26.67 -1.75
1.6 10.700 10.305 4.34 27.36 -2.2246
1.62 10.825 10.416 4.43 27.60 -1.93
1.64 10.950 10.526 3.7 25.57 -2.3086
1.66 11.075 10.637 3.7 25.57 -1.71
1.68 11.200 10.748 3.48 24.88 -1.73
1.7 11.325 10.858 3.95 26.31 -1.55
1.72 11.450 10.969 3.76 25.75 -2.09
1.74 11.575 11.079 4.31 27.29 -1.89
1.76 11.700 11.190 4.26 27.16 -2.12
1.78 11.740 11.224 4.17 26.92 -1.66
1.8 11.780 11.258 3.97 26.36 -1.66
1.82 11.820 11.292 4.21 27.02 -1.57
1.84 11.860 11.326 4.12 26.78 -1.7746
1.86 11.900 11.360 3.7 25.57 -1.48
1.88 11.940 11.394 3.56 25.14 -1.7
1.9 11.980 11.428 3.45 24.79 -1.85
1.92 12.020 11.462 3.83 25.96 -1.64
1.94 12.060 11.496 4.1 26.73 -1.58
1.96 12.100 11.530 3.53 25.04 -1.64
1.98 12.140 11.564 3.73 25.66 -1.9796
2 12.180 11.598 3.9 26.16 -1.9056
2.02 12.220 11.632 3.78 25.81 -1.61
2.04 12.260 11.666 3.78 25.81 -1.55
2.06 12.300 11.700 3.75 25.72 -1.25
2.08 12.306 11.722 3.85 26.02 -1.38
2.1 12.311 11.744 3.49 24.92 -1.42
2.12 12.317 11.767 3.56 25.14 -1.58
2.14 12.322 11.789 3.77 25.78 -1.7576
2.16 12.328 11.811 3.31 24.32 -1.4
2.18 12.333 11.833 3.39 24.59 -1.56
2.2 12.339 11.856 3.58 25.20 -1.14
2.22 12.344 11.878 3.26 24.15 -1.19
2.24 12.350 11.900 3.05 23.40 -1.2
2.26 12.385 11.953 3.09 23.55 -1.5
2.28 12.419 12.006 3.31 24.32 -1.74
2.3 12.454 12.059 3.38 24.56 -1.4
2.32 12.489 12.112 3.64 25.39 -1.55
2.34 12.524 12.165 3.59 25.23 -1.26
2.36 12.558 12.218 3.27 24.18 -1.34
2.38 12.593 12.271 3.72 25.63 -1.1
2.4 12.628 12.324 3.69 25.54 -1.09
2.42 12.662 12.376 3.58 25.20 -1.17
2.44 12.697 12.429 3.31 24.32 -1.14
2.46 12.732 12.482 3.14 23.73 -1.08
2.48 12.766 12.535 3.38 24.56 -1.56
2.5 12.801 12.588 3.54 25.08 -1.3
2.52 12.836 12.641 3.76 25.75 -1.47
2.54 12.871 12.694 3.48 24.88 -1.1256
2.56 12.905 12.747 3.3 24.29 -1.1766
2.58 12.940 12.800 3.43 24.72 -1.08
2.6 12.989 12.835 3.32 24.35 -1.1
2.62 13.039 12.869 3.16 23.80 -1.26
2.64 13.088 12.904 3.6 25.26 -1.31
2.66 13.137 12.939 3.42 24.69 -1.12
2.68 13.187 12.973 3.39 24.59 -1.55
2.7 13.236 13.008 3.64 25.39 -1.3336
2.72 13.285 13.043 3.48 24.88 -1.44
2.74 13.335 13.077 3.82 25.93 -1.25
2.76 13.384 13.112 3.37 24.52 -1.31
2.78 13.433 13.147 3.2 23.94 -1.34
2.8 13.483 13.181 3.77 25.78 -1.55
2.82 13.532 13.216 4 26.45 -1.7836
2.84 13.581 13.251 3.71 25.60 -1.3896
2.86 13.631 13.285 3.65 25.42 -1.3126
2.88 13.680 13.320 3.7 25.57 -1.0076
2.9 13.725 13.360 3.56 25.14 -0.94
2.92 13.769 13.400 3.66 25.45 -1.0436
2.94 13.814 13.440 3.53 25.04 -0.92
2.96 13.859 13.480 3.88 26.11 -1.38
2.98 13.904 13.520 4.08 26.67 -0.98
3 13.948 13.560 3.67 25.48 -1.05
3.02 13.993 13.600 3.4 24.62 -0.96
3.04 14.038 13.640 3.31 24.32 -0.77
3.06 14.082 13.680 3.59 25.23 -0.99
3.08 14.127 13.720 3.5 24.95 -1.1726
3.1 14.172 13.760 3.47 24.85 -1.1876
3.12 14.216 13.800 3.57 25.17 -1.5336
3.14 14.261 13.840 3.48 24.88 -1.4646
3.16 14.306 13.880 3.65 25.42 -1.6476
3.18 14.351 13.920 3.5 24.95 -1.15
3.2 14.395 13.960 3.44 24.75 -1.38
3.22 14.440 14.000 3.67 25.48 -1.5506
3.24 14.498 14.068 3.64 25.39 -1.5586
3.26 14.557 14.135 3.54 25.08 -0.82
3.28 14.615 14.203 3.28 24.22 -0.78
3.3 14.674 14.271 3.1 23.58 -1.0736
3.32 14.732 14.338 3.23 24.05 -1.31
3.34 14.791 14.406 3.39 24.59 -0.81
3.36 14.849 14.474 3.54 25.08 -1.03
3.38 14.908 14.542 3.38 24.56 -0.72
3.4 14.966 14.609 3.45 24.79 -0.6566
3.42 15.025 14.677 3.42 24.69 -0.63
3.44 15.083 14.745 3.3 24.29 -0.9
3.46 15.142 14.812 3.16 23.80 -0.89
3.48 15.200 14.880 3.09 23.55 -0.73
3.5 15.240 14.912 3.23 24.05 -0.59
3.52 15.280 14.943 3.12 23.66 -0.82
3.54 15.320 14.975 3.14 23.73 -0.6916
3.56 15.360 15.007 2.99 23.18 -0.86
3.58 15.400 15.038 3.11 23.62 -0.65
3.6 15.440 15.070 3.26 24.15 -0.59
3.62 15.480 15.102 3.22 24.01 -0.53
3.64 15.520 15.133 2.94 22.99 -0.6
3.66 15.560 15.165 2.8 22.44 -0.49
3.68 15.600 15.197 3.2 23.94 -0.57
3.7 15.640 15.228 3.04 23.36 -0.52
3.72 15.680 15.260 3.2 23.94 -0.45
3.74 15.744 15.324 3.12 23.66 -0.31
3.76 15.809 15.387 2.81 22.48 -0.37
3.78 15.873 15.451 3.03 23.33 -0.62
3.8 15.938 15.514 3.02 23.29 -0.56
3.82 16.002 15.578 3.08 23.51 -0.21
3.84 16.067 15.642 2.99 23.18 -0.67
3.86 16.131 15.705 3.14 23.73 -0.4
3.88 16.196 15.769 2.89 22.80 -0.59
3.9 16.260 15.833 3.13 23.69 -0.46
3.92 16.324 15.896 3.25 24.12 -0.43
3.94 16.389 15.960 3.18 23.87 -0.56
3.96 16.453 16.023 3.18 23.87 -0.45
3.98 16.518 16.087 2.96 23.06 -0.4
4 16.582 16.151 2.89 22.80 -0.62
4.02 16.647 16.214 2.89 22.80 -0.51
4.04 16.711 16.278 3.16 23.80 -0.93
4.06 16.776 16.341 3.32 24.35 -0.48
4.08 16.840 16.405 3.15 23.76 -0.68
4.1 16.904 16.469 3.16 23.80 -0.59
4.12 16.969 16.532 3.09 23.55 -0.84
4.14 17.033 16.596 3.28 24.22 -0.35
4.16 17.098 16.659 2.96 23.06 -0.44
4.18 17.162 16.723 3.14 23.73 -0.58
4.2 17.227 16.787 3.05 23.40 -0.74
4.22 17.291 16.850 3.15 23.76 -0.48
4.24 17.356 16.914 3.16 23.80 -0.67
4.26 17.420 16.978 3.11 23.62 -0.76
4.28 17.484 17.041 3.07 23.47 -0.56
4.3 17.549 17.105 3.05 23.40 -0.39
4.32 17.613 17.168 3.05 23.40 -0.57
4.34 17.678 17.232 3.09 23.55 -0.6
4.36 17.742 17.296 3.01 23.25 -0.57
4.38 17.807 17.359 3 23.22 -0.44
4.4 17.871 17.423 3.22 24.01 -0.39
4.42 17.936 17.486 3.06 23.44 -0.74
4.44 18.000 17.550 2.87 22.72 -0.29
4.46 18.064 17.614 2.67 21.91 -0.22
4.48 18.129 17.677 3.07 23.47 -0.65
4.5 18.193 17.741 2.94 22.99 -0.42