Variable 10 Be fluxes in lacustrine sediments from Tristan da Cunha, South Atlantic: a solar record?
A 650-yr-long sediment sequence from a crater lake on Tristan da Cunha, South Atlantic, was analysed for its 10 Be content. Based on 14 C dating, and sedimentary, geochemical, magnetic and palynological records, the period between 900 and 1450 AD appears to have been unusually stable in terms of sed...
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Language: | English |
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2007
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Online Access: | https://doi.org/10.1016/j.quascirev.2006.12.016 |
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fteawag:oai:dora:eawag_5460 2024-09-15T18:12:01+00:00 Variable 10 Be fluxes in lacustrine sediments from Tristan da Cunha, South Atlantic: a solar record? Ljung, Karl Björck, Svante Muscheler, Raimund Beer, Jürg Kubik, Peter W. 2007 https://doi.org/10.1016/j.quascirev.2006.12.016 eng eng Elsevier Quaternary Science Reviews--Quat. Sci. Rev.--journals:2468--0277-3791 eawag:5460 journal id: journals:2468 issn: 0277-3791 ut: 000248732200001 local: 10980 scopus: 2-s2.0-34248326071 doi:10.1016/j.quascirev.2006.12.016 Text Journal Article 2007 fteawag https://doi.org/10.1016/j.quascirev.2006.12.016 2024-08-05T03:04:28Z A 650-yr-long sediment sequence from a crater lake on Tristan da Cunha, South Atlantic, was analysed for its 10 Be content. Based on 14 C dating, and sedimentary, geochemical, magnetic and palynological records, the period between 900 and 1450 AD appears to have been unusually stable in terms of sedimentation and vegetation and therefore this period was chosen for analysis of the 10 Be content. During this period of highly organic sedimentation and closed vegetation, the pattern of 10 Be flux variations follows the 10 Be fluctuations from the GRIP ice core and estimated 14 C production rates well. However, before and after this stable period, variable sedimentation rates have to be accounted for to obtain results that are comparable to the established 10 Be/ 14 C records. Our data show not only the possibility of obtaining detailed enough 10 Be flux data from sedimentary sequences to reconstruct past solar forcing but also how sensitive this type of record is to sedimentary and environmental changes. If suitable archives can be found, they have the potential to improve reconstructions of solar activity far back in time. Article in Journal/Newspaper ice core DORA Eawag Quaternary Science Reviews 26 7-8 829 835 |
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Open Polar |
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DORA Eawag |
op_collection_id |
fteawag |
language |
English |
description |
A 650-yr-long sediment sequence from a crater lake on Tristan da Cunha, South Atlantic, was analysed for its 10 Be content. Based on 14 C dating, and sedimentary, geochemical, magnetic and palynological records, the period between 900 and 1450 AD appears to have been unusually stable in terms of sedimentation and vegetation and therefore this period was chosen for analysis of the 10 Be content. During this period of highly organic sedimentation and closed vegetation, the pattern of 10 Be flux variations follows the 10 Be fluctuations from the GRIP ice core and estimated 14 C production rates well. However, before and after this stable period, variable sedimentation rates have to be accounted for to obtain results that are comparable to the established 10 Be/ 14 C records. Our data show not only the possibility of obtaining detailed enough 10 Be flux data from sedimentary sequences to reconstruct past solar forcing but also how sensitive this type of record is to sedimentary and environmental changes. If suitable archives can be found, they have the potential to improve reconstructions of solar activity far back in time. |
format |
Article in Journal/Newspaper |
author |
Ljung, Karl Björck, Svante Muscheler, Raimund Beer, Jürg Kubik, Peter W. |
spellingShingle |
Ljung, Karl Björck, Svante Muscheler, Raimund Beer, Jürg Kubik, Peter W. Variable 10 Be fluxes in lacustrine sediments from Tristan da Cunha, South Atlantic: a solar record? |
author_facet |
Ljung, Karl Björck, Svante Muscheler, Raimund Beer, Jürg Kubik, Peter W. |
author_sort |
Ljung, Karl |
title |
Variable 10 Be fluxes in lacustrine sediments from Tristan da Cunha, South Atlantic: a solar record? |
title_short |
Variable 10 Be fluxes in lacustrine sediments from Tristan da Cunha, South Atlantic: a solar record? |
title_full |
Variable 10 Be fluxes in lacustrine sediments from Tristan da Cunha, South Atlantic: a solar record? |
title_fullStr |
Variable 10 Be fluxes in lacustrine sediments from Tristan da Cunha, South Atlantic: a solar record? |
title_full_unstemmed |
Variable 10 Be fluxes in lacustrine sediments from Tristan da Cunha, South Atlantic: a solar record? |
title_sort |
variable 10 be fluxes in lacustrine sediments from tristan da cunha, south atlantic: a solar record? |
publisher |
Elsevier |
publishDate |
2007 |
url |
https://doi.org/10.1016/j.quascirev.2006.12.016 |
genre |
ice core |
genre_facet |
ice core |
op_relation |
Quaternary Science Reviews--Quat. Sci. Rev.--journals:2468--0277-3791 eawag:5460 journal id: journals:2468 issn: 0277-3791 ut: 000248732200001 local: 10980 scopus: 2-s2.0-34248326071 doi:10.1016/j.quascirev.2006.12.016 |
op_doi |
https://doi.org/10.1016/j.quascirev.2006.12.016 |
container_title |
Quaternary Science Reviews |
container_volume |
26 |
container_issue |
7-8 |
container_start_page |
829 |
op_container_end_page |
835 |
_version_ |
1810449606155173888 |