Hörner, Tanja; Stein, Ruediger; Fahl, Kirsten (2017): Biomarker analyses on sediment core BP00-07/07 from the southern Kara Sea (Arctic Ocean) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.871593, Supplement to: Hörner, T et al. (2017): Evidence for Holocene centennial variability in sea ice cover based on IP25 biomarker reconstruction in the southern Kara Sea (Arctic Ocean). Geo-Marine Letters, 37(5), 515-526, https://doi.org/10.1007/s00367-017-0501-y
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Abstract:
The Holocene is characterized by the late Holocene cooling trend as well as by internal short-term centennial fluctuations. As Arctic sea ice acts as a significant component (amplifier) within the climate system, investigating its past long- and short-term variability and controlling processes is beneficial for climate future predictions. This study presents the first biomarker-based (IP25 and PIP25) sea ice reconstruction from the Kara Sea (Core BP00-07/07), covering the last 8 ka. These biomarker proxies reflect conspicuous short-term sea ice variability during the last 6.5 ka that is identified unprecedentedly in the source region of Arctic sea ice by means of a direct sea ice indicator. Prominent peaks of extended sea ice cover occurred at ~3, ~2, ~1.3 and ~0.3 ka Spectral analysis of the IP25 record revealed ~400- and ~950-year cycles. These periodicities may be related to the Arctic/North Atlantic Oscillation (AO/NAO), but probably also to internal climate system fluctuations. This demonstrates that sea ice belongs to a complex system that more likely depends on multiple internal forcing.
Project(s):
Coverage:
Latitude: 74.657600 * Longitude: 81.141100
Date/Time Start: 2000-09-07T06:22:00 * Date/Time End: 2000-09-07T06:22:00
Minimum DEPTH, sediment/rock: 0.105 m * Maximum DEPTH, sediment/rock: 7.005 m
Event(s):
BP00-07/07 * Latitude: 74.657600 * Longitude: 81.141100 * Date/Time: 2000-09-07T06:22:00 * Elevation: -38.0 m * Recovery: 7.23 m * Location: Kara Sea * Campaign: BP00 * Basis: Akademik Boris Petrov * Method/Device: Gravity corer (GC) * Comment: gravity corer 8 m
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
891 data points
Data
1 Depth sed [m] | 2 TOC [%] | 3 IP25/sed [µg/g] | 4 IP25/TOC [µg/g] | 5 Brassicasterol/sed [µg/g] | 6 Brassicasterol/TOC [µg/g] | 7 Campesterol/sed [µg/g] | 8 Campesterol/TOC [µg/g] | 9 b-Sitosterol/sed [µg/g] | 10 b-Sitosterol/TOC [µg/g] | 11 Dinosterol/sed [µg/g] | 12 Dinosterol/TOC [µg/g] |
---|---|---|---|---|---|---|---|---|---|---|---|
0.105 | 1.406 | 0.012 | 0.847 | 0.531 | 37.740 | 0.338 | 24.009 | 1.218 | 86.656 | 0.517 | 36.799 |
0.205 | 1.350 | 0.005 | 0.348 | 0.135 | 10.034 | 0.096 | 7.136 | 0.310 | 22.982 | 0.105 | 7.763 |
0.305 | 1.279 | 0.007 | 0.538 | 0.350 | 27.406 | 0.227 | 17.729 | 0.896 | 70.079 | 0.568 | 44.388 |
0.405 | 1.315 | 0.003 | 0.223 | 0.127 | 9.685 | 0.079 | 6.004 | 0.323 | 24.551 | 0.212 | 16.144 |
0.505 | 1.058 | 0.005 | 0.487 | 0.311 | 29.358 | 0.182 | 17.192 | 0.748 | 70.707 | 0.480 | 45.334 |
0.605 | 1.015 | 0.004 | 0.409 | 0.109 | 10.717 | 0.063 | 6.256 | 0.262 | 25.774 | 0.075 | 7.425 |
0.705 | 1.013 | 0.007 | 0.678 | 0.262 | 25.845 | 0.162 | 15.953 | 0.634 | 62.610 | 0.393 | 38.760 |
0.805 | 1.000 | 0.003 | 0.300 | 0.139 | 13.936 | 0.089 | 8.864 | 0.347 | 34.694 | 0.198 | 19.823 |
0.855 | 1.232 | 0.002 | 0.206 | 0.191 | 15.522 | 0.127 | 10.274 | 0.435 | 35.314 | 0.281 | 22.844 |
0.905 | 1.343 | 0.004 | 0.294 | 0.286 | 21.318 | 0.206 | 15.358 | 0.844 | 62.843 | 0.378 | 28.128 |
0.955 | 1.049 | 0.004 | 0.430 | 0.319 | 30.350 | 0.266 | 25.311 | 0.956 | 91.097 | 0.370 | 35.287 |
1.005 | 1.113 | 0.004 | 0.335 | 0.147 | 13.234 | 0.119 | 10.713 | 0.422 | 37.949 | 0.103 | 9.217 |
1.055 | 0.915 | 0.003 | 0.342 | 0.122 | 13.295 | 0.097 | 10.611 | 0.374 | 40.830 | 0.047 | 5.116 |
1.105 | 0.982 | 0.006 | 0.592 | 0.240 | 24.444 | 0.155 | 15.763 | 0.569 | 57.897 | 0.297 | 30.262 |
1.155 | 1.033 | 0.006 | 0.613 | 0.226 | 21.848 | 0.141 | 13.631 | 0.519 | 50.208 | 0.271 | 26.287 |
1.205 | 0.970 | 0.002 | 0.248 | 0.105 | 10.859 | 0.077 | 7.931 | 0.282 | 29.052 | 0.123 | 12.713 |
1.305 | 0.976 | 0.004 | 0.441 | 0.194 | 19.831 | 0.138 | 14.094 | 0.570 | 58.431 | 0.289 | 29.614 |
1.405 | 0.893 | 0.002 | 0.280 | 0.092 | 10.338 | 0.065 | 7.271 | 0.229 | 25.679 | 0.130 | 14.557 |
1.455 | 0.932 | 0.002 | 0.199 | 0.092 | 9.877 | 0.072 | 7.676 | 0.276 | 29.668 | 0.152 | 16.268 |
1.505 | 1.008 | 0.004 | 0.432 | 0.183 | 18.147 | 0.141 | 13.989 | 0.589 | 58.398 | 0.302 | 29.975 |
1.555 | 0.985 | 0.005 | 0.478 | 0.240 | 24.402 | 0.206 | 20.874 | 0.649 | 65.850 | 0.263 | 26.704 |
1.605 | 1.032 | 0.003 | 0.314 | 0.088 | 8.533 | 0.051 | 4.902 | 0.212 | 20.556 | 0.022 | 2.154 |
1.705 | 0.960 | 0.003 | 0.347 | 0.242 | 25.173 | 0.178 | 18.505 | 0.769 | 80.052 | 0.350 | 36.482 |
1.805 | 0.905 | 0.002 | 0.275 | 0.141 | 15.545 | 0.087 | 9.579 | 0.357 | 39.508 | 0.204 | 22.557 |
1.905 | 0.987 | 0.004 | 0.368 | 0.252 | 25.583 | 0.167 | 16.924 | 0.707 | 71.628 | 0.327 | 33.124 |
1.975 | 1.034 | 0.005 | 0.505 | 0.218 | 21.104 | 0.131 | 12.700 | 0.546 | 52.794 | 0.232 | 22.453 |
2.015 | 0.985 | 0.002 | 0.223 | 0.132 | 13.391 | 0.088 | 8.919 | 0.328 | 33.293 | 0.135 | 13.748 |
2.055 | 0.961 | 0.003 | 0.299 | 0.104 | 10.809 | 0.059 | 6.184 | 0.219 | 22.782 | 0.084 | 8.737 |
2.105 | 0.957 | 0.004 | 0.366 | 0.264 | 27.583 | 0.158 | 16.499 | 0.670 | 70.074 | 0.273 | 28.497 |
2.205 | 1.001 | 0.003 | 0.258 | 0.127 | 12.660 | 0.075 | 7.476 | 0.249 | 24.926 | 0.129 | 12.854 |
2.305 | 1.391 | 0.005 | 0.330 | 0.265 | 19.062 | 0.168 | 12.104 | 0.666 | 47.897 | 0.297 | 21.380 |
2.505 | 1.212 | 0.004 | 0.289 | 0.274 | 22.571 | 0.148 | 12.214 | 0.694 | 57.256 | 0.310 | 25.612 |
2.605 | 1.088 | 0.004 | 0.343 | 0.253 | 23.233 | 0.156 | 14.292 | 0.593 | 54.506 | 0.218 | 20.068 |
2.705 | 1.343 | 0.006 | 0.431 | 0.286 | 21.329 | 0.193 | 14.366 | 0.679 | 50.539 | 0.295 | 21.941 |
2.805 | 1.026 | 0.002 | 0.205 | 0.334 | 32.582 | 0.205 | 19.967 | 0.732 | 71.285 | 0.270 | 26.352 |
2.905 | 1.016 | 0.005 | 0.514 | 0.263 | 25.872 | 0.198 | 19.542 | 0.725 | 71.354 | 0.322 | 31.659 |
3.005 | 0.973 | 0.003 | 0.302 | 0.208 | 21.317 | 0.138 | 14.137 | 0.524 | 53.794 | 0.138 | 14.220 |
3.105 | 1.023 | 0.007 | 0.670 | 0.242 | 23.659 | 0.183 | 17.878 | 0.663 | 64.828 | 0.222 | 21.681 |
3.205 | 0.972 | 0.004 | 0.395 | 0.272 | 27.985 | 0.152 | 15.611 | 0.534 | 54.941 | 0.330 | 33.908 |
3.255 | 1.012 | 0.003 | 0.325 | 0.280 | 27.654 | 0.156 | 15.420 | 0.535 | 52.823 | 0.124 | 12.277 |
3.305 | 0.962 | 0.005 | 0.479 | 0.271 | 28.126 | 0.178 | 18.525 | 0.647 | 67.251 | 0.267 | 27.717 |
3.405 | 1.030 | 0.004 | 0.342 | 0.308 | 29.902 | 0.191 | 18.572 | 0.686 | 66.622 | 0.271 | 26.271 |
3.505 | 0.914 | 0.005 | 0.595 | 0.332 | 36.299 | 0.172 | 18.788 | 0.667 | 72.947 | 0.260 | 28.418 |
3.605 | 0.956 | 0.005 | 0.502 | 0.376 | 39.277 | 0.237 | 24.806 | 0.845 | 88.407 | 0.340 | 35.576 |
3.705 | 1.266 | 0.005 | 0.392 | 0.325 | 25.673 | 0.222 | 17.518 | 0.822 | 64.876 | 0.267 | 21.070 |
3.755 | 1.063 | 0.006 | 0.534 | 0.300 | 28.225 | 0.174 | 16.405 | 0.732 | 68.849 | 0.258 | 24.253 |
3.805 | 0.997 | 0.008 | 0.810 | 0.232 | 23.261 | 0.115 | 11.542 | 0.600 | 60.124 | 0.136 | 13.631 |
3.905 | 1.011 | 0.004 | 0.427 | 0.244 | 24.123 | 0.162 | 15.982 | 0.658 | 65.052 | 0.242 | 23.982 |
4.005 | 0.990 | 0.005 | 0.500 | 0.263 | 26.569 | 0.176 | 17.793 | 0.594 | 60.014 | 0.126 | 12.779 |
4.105 | 0.963 | 0.006 | 0.635 | 0.310 | 32.161 | 0.192 | 19.974 | 0.752 | 78.099 | 0.287 | 29.833 |
4.305 | 0.931 | 0.006 | 0.601 | 0.223 | 23.920 | 0.133 | 14.262 | 0.568 | 61.054 | 0.215 | 23.094 |
4.405 | 1.275 | 0.004 | 0.285 | 0.214 | 16.764 | 0.170 | 13.300 | 0.662 | 51.959 | 0.183 | 14.377 |
4.505 | 0.902 | 0.007 | 0.778 | 0.277 | 30.714 | 0.156 | 17.244 | 0.680 | 75.345 | 0.243 | 26.937 |
4.555 | 0.941 | 0.005 | 0.559 | 0.259 | 27.468 | 0.178 | 18.880 | 0.692 | 73.505 | 0.193 | 20.469 |
4.605 | 0.987 | 0.004 | 0.442 | 0.240 | 24.300 | 0.174 | 17.584 | 0.632 | 64.027 | 0.202 | 20.452 |
4.705 | 1.002 | 0.008 | 0.765 | 0.260 | 25.905 | 0.173 | 17.299 | 0.688 | 68.667 | 0.234 | 23.383 |
4.805 | 0.923 | 0.005 | 0.514 | 0.184 | 19.893 | 0.132 | 14.260 | 0.568 | 61.562 | 0.107 | 11.632 |
4.905 | 0.975 | 0.010 | 0.990 | 0.279 | 28.653 | 0.206 | 21.140 | 0.819 | 84.033 | 0.265 | 27.177 |
5.105 | 0.962 | 0.008 | 0.818 | 0.297 | 30.886 | 0.191 | 19.886 | 0.824 | 85.662 | 0.269 | 27.950 |
5.205 | 0.949 | 0.008 | 0.861 | 0.260 | 27.423 | 0.192 | 20.230 | 0.712 | 75.072 | 0.289 | 30.519 |
5.305 | 0.937 | 0.011 | 1.141 | 0.292 | 31.171 | 0.167 | 17.856 | 0.751 | 80.084 | 0.281 | 30.020 |
5.405 | 1.063 | 0.006 | 0.583 | 0.271 | 25.457 | 0.208 | 19.548 | 0.773 | 72.652 | 0.241 | 22.616 |
5.505 | 1.338 | 0.011 | 0.824 | 0.379 | 28.340 | 0.264 | 19.726 | 0.948 | 70.859 | 0.328 | 24.523 |
5.605 | 1.299 | 0.007 | 0.549 | 0.275 | 21.192 | 0.193 | 14.841 | 0.731 | 56.301 | 0.267 | 20.550 |
5.705 | 0.985 | 0.008 | 0.823 | 0.274 | 27.832 | 0.199 | 20.177 | 0.813 | 82.495 | 0.284 | 28.870 |
5.805 | 1.304 | 0.008 | 0.635 | 0.216 | 16.532 | 0.162 | 12.453 | 0.663 | 50.854 | 0.208 | 15.971 |
5.905 | 0.897 | 0.010 | 1.093 | 0.281 | 31.388 | 0.214 | 23.900 | 0.862 | 96.160 | 0.373 | 41.586 |
6.005 | 1.048 | 0.005 | 0.488 | 0.265 | 25.304 | 0.214 | 20.374 | 0.814 | 77.678 | 0.283 | 26.964 |
6.105 | 0.970 | 0.005 | 0.497 | 0.272 | 28.006 | 0.249 | 25.662 | 1.084 | 111.726 | 0.372 | 38.405 |
6.155 | 0.979 | 0.006 | 0.609 | 0.290 | 29.683 | 0.234 | 23.947 | 0.234 | 23.947 | 0.347 | 35.469 |
6.205 | 1.069 | 0.005 | 0.508 | 0.250 | 23.352 | 0.173 | 16.139 | 0.704 | 65.880 | 0.361 | 33.759 |
6.255 | 0.909 | 0.004 | 0.445 | 0.251 | 27.648 | 0.174 | 19.151 | 0.664 | 73.115 | 0.209 | 22.967 |
6.305 | 1.034 | 0.009 | 0.902 | 0.295 | 28.554 | 0.219 | 21.161 | 0.936 | 90.485 | 0.376 | 36.348 |
6.355 | 0.979 | 0.008 | 0.777 | 0.290 | 29.606 | 0.230 | 23.479 | 0.976 | 99.721 | 0.445 | 45.434 |
6.405 | 1.030 | 0.006 | 0.566 | 0.327 | 31.731 | 0.198 | 19.210 | 0.958 | 93.058 | 0.442 | 42.941 |
6.505 | 0.967 | 0.007 | 0.692 | 0.384 | 39.702 | 0.229 | 23.718 | 1.019 | 105.436 | 0.479 | 49.549 |
6.605 | 0.961 | 0.006 | 0.670 | 0.169 | 17.624 | 0.204 | 21.243 | 0.711 | 73.986 | 0.174 | 18.136 |
6.705 | 0.970 | 0.007 | 0.683 | 0.376 | 38.732 | 0.263 | 27.150 | 1.185 | 122.140 | 0.650 | 67.026 |
6.805 | 0.833 | 0.004 | 0.460 | 0.178 | 21.317 | 0.128 | 15.407 | 0.566 | 67.922 | 0.187 | 22.389 |
6.905 | 0.995 | 0.006 | 0.654 | 0.240 | 24.166 | 0.246 | 24.685 | 1.138 | 114.417 | 0.595 | 59.774 |
7.005 | 1.337 | 0.004 | 0.300 | 0.309 | 23.139 | 0.202 | 15.127 | 1.079 | 80.744 | 0.699 | 52.308 |