Radionuclides in sediment cores from the higher latitudes, supplement to: Strobl, Christopher (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
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 comparabl...
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ftdatacite:10.1594/pangaea.865310 2023-05-15T14:51:18+02:00 Radionuclides in sediment cores from the higher latitudes, supplement to: Strobl, Christopher (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 Strobl, Christopher 1998 application/zip https://dx.doi.org/10.1594/pangaea.865310 https://doi.pangaea.de/10.1594/PANGAEA.865310 en eng PANGAEA - Data Publisher for Earth & Environmental Science Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY article Supplementary Collection of Datasets Collection 1998 ftdatacite https://doi.org/10.1594/pangaea.865310 2022-02-09T13:17:17Z 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. Article in Journal/Newspaper Arctic Arctic Ocean Greenland Greenland Sea laptev Laptev Sea DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Laptev Sea Greenland |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Strobl, Christopher |
spellingShingle |
Strobl, Christopher Radionuclides in sediment cores from the higher latitudes, supplement to: Strobl, Christopher (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 |
author_facet |
Strobl, Christopher |
author_sort |
Strobl, Christopher |
title |
Radionuclides in sediment cores from the higher latitudes, supplement to: Strobl, Christopher (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 |
title_short |
Radionuclides in sediment cores from the higher latitudes, supplement to: Strobl, Christopher (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 |
title_full |
Radionuclides in sediment cores from the higher latitudes, supplement to: Strobl, Christopher (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 |
title_fullStr |
Radionuclides in sediment cores from the higher latitudes, supplement to: Strobl, Christopher (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 |
title_full_unstemmed |
Radionuclides in sediment cores from the higher latitudes, supplement to: Strobl, Christopher (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 |
title_sort |
radionuclides in sediment cores from the higher latitudes, supplement to: strobl, christopher (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 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1998 |
url |
https://dx.doi.org/10.1594/pangaea.865310 https://doi.pangaea.de/10.1594/PANGAEA.865310 |
geographic |
Arctic Arctic Ocean Laptev Sea Greenland |
geographic_facet |
Arctic Arctic Ocean Laptev Sea Greenland |
genre |
Arctic Arctic Ocean Greenland Greenland Sea laptev Laptev Sea |
genre_facet |
Arctic Arctic Ocean Greenland Greenland Sea laptev Laptev Sea |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.865310 |
_version_ |
1766322355675594752 |