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Strobl, Christopher (1998): Radionuclides in sediment cores from the higher latitudes. PANGAEA, https://doi.org/10.1594/PANGAEA.865310, Supplement to: Strobl, C (1998): Datierung von Sedimentkernen und Rekonstruktion der Transportwege der Radionuklide 10Be, 230Th und 231 Pa in hohen nördlichen Breiten. PhD Thesis, Ruprecht-Karls-Universität, Heidelberg, 231 pp, hdl:10013/epic.48654.d001

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Abstract:
In this thesis it is shown that the cosmogenic radionuclide 10Be proved to be a sensitive stratigraphic tool for sediment cores from the Arctic Ocean with low or negligible content of biogenic carbonate, impeding a reliable 0180 stratigraphy. 10Be enables a stratigraphy of Arctic sediments comparable to the d18O stratigraphy Imbrie et al. [1984] in that high concentration of 10Be are related to interglacial stages in contrast to lower values during glacial periods. To use the °Be profile as dating tool it is necessary to investigate the sources and sinks as well as the pathways of this radiotracer. 10Be is produced in the upper atmosphere and transfered to the earth's surface by dry and wet deposition. Besides the atmospheric component there is an important input of 10Be with the rivers to the Arctic Ocean. I determined depositional 10Be fluxes in the shelf area of the Laptev Sea, which is characterized by a huge input of river water, the continental slope of the Laptev Sea, the central Arctic Ocean and the Norwegian- and Greenland Sea. The depositional 10Be fluxes of (20 ± 5) x 10**6 atoms/cm**2/a in the shelf area of the Laptev Sea are by two orders of magnitude higher than the recent atmospheric input (0.2 - 0.5) x 10**6 atoms/cm**2/a in Greenland. while the fluxes in the central Arctic Ocean are in the same range. Further I developed a model to reconstruct the pathways of radionuclides 230Th, 231Pa and 10Be in high northern latitudes. The modelling results were compared with the measured concentrations in the water column and the recent depositional fluxes. These results show that the recent pathways of these nuclides can be rebuild by this model. Thus we can apply this model to earlier oxygen isotope stages to find out which predominate conditions lead to the determined depositional fluxes.
Coverage:
Median Latitude: 77.500738 * Median Longitude: 69.095911 * South-bound Latitude: 23.498333 * West-bound Longitude: -18.716667 * North-bound Latitude: 88.005000 * East-bound Longitude: 159.167500
Date/Time Start: 1971-10-31T00:00:00 * Date/Time End: 1995-08-24T00:00:00
Size:
28 datasets

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Datasets listed in this publication series

  1. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core GIK12309-3. https://doi.org/10.1594/PANGAEA.865281
  2. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core GIK12310-5. https://doi.org/10.1594/PANGAEA.865282
  3. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core GIK17728-2. https://doi.org/10.1594/PANGAEA.865283
  4. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core GIK23059-3. https://doi.org/10.1594/PANGAEA.865284
  5. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core GIK23065-3. https://doi.org/10.1594/PANGAEA.865285
  6. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core GIK23235-3. https://doi.org/10.1594/PANGAEA.865300
  7. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core GIK23259-2. https://doi.org/10.1594/PANGAEA.865287
  8. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS1521-15. https://doi.org/10.1594/PANGAEA.865288
  9. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS1524-2. https://doi.org/10.1594/PANGAEA.865289
  10. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS1533-3. https://doi.org/10.1594/PANGAEA.865290
  11. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS2138-1. https://doi.org/10.1594/PANGAEA.865291
  12. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS2178-5. https://doi.org/10.1594/PANGAEA.865292
  13. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS2185-3. https://doi.org/10.1594/PANGAEA.865293
  14. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS2185-6. https://doi.org/10.1594/PANGAEA.865294
  15. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS2200-5. https://doi.org/10.1594/PANGAEA.865295
  16. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS2456-3. https://doi.org/10.1594/PANGAEA.865296
  17. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS2471-4. https://doi.org/10.1594/PANGAEA.865297
  18. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS2474-3. https://doi.org/10.1594/PANGAEA.865298
  19. Strobl, C (1998): (Appendix C) Depositional flux of 230Th_ex and 10Be of sediment core PS2757-8. https://doi.org/10.1594/PANGAEA.865299
  20. Strobl, C (1998): (Appendix D) Content of 10Be of sediment core PS2185-3. https://doi.org/10.1594/PANGAEA.865306
  21. Strobl, C (1998): (Appendix D) Content of 10Be of sediment core PS2185-6. https://doi.org/10.1594/PANGAEA.865307
  22. Strobl, C (1998): (Appendix D) Content of 10Be of sediment core PS2200-5. https://doi.org/10.1594/PANGAEA.865308
  23. Strobl, C (1998): (Appendix D) Content of 10Be of sediment core PS2471-4. https://doi.org/10.1594/PANGAEA.865309
  24. Strobl, C (1998): (Appendix D) Content of 230Th, 232Th, 238U of sediment core PS2185-3. https://doi.org/10.1594/PANGAEA.865301
  25. Strobl, C (1998): (Appendix D) Content of 230Th, 232Th, 238U of sediment core PS2185-6. https://doi.org/10.1594/PANGAEA.865302
  26. Strobl, C (1998): (Appendix D) Content of 230Th, 232Th, 238U of sediment core PS2200-5. https://doi.org/10.1594/PANGAEA.865303
  27. Strobl, C (1998): (Appendix D) Content of 230Th, 232Th, 238U of sediment core PS2471-4. https://doi.org/10.1594/PANGAEA.865304
  28. Strobl, C (1998): (Appendix D) Content of 230Th, 232Th, 238U of sediment core PS2474-3. https://doi.org/10.1594/PANGAEA.865305