Radionuclides in sediment cores from the higher latitudes ...
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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| Format: | Article in Journal/Newspaper |
| Language: | English |
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PANGAEA
1998
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| Online Access: | https://dx.doi.org/10.1594/pangaea.865310 https://doi.pangaea.de/10.1594/PANGAEA.865310 |
| Summary: | 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 ... : Supplement to: Strobl, Christopher (1998): Datierung von Sedimentkernen und Rekonstruktion der Transportwege der Radionuklide 10Be, 230Th und 231 Pa in hohen nördlichen Breiten. Ruprecht-Karls-Universität, Heidelberg, 231 pp ... |
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