Advanced

Variable Be-10 fluxes in lacustrine sediments from Tristan da Cunha, South Atlantic: a solar record?

Ljung, Karl LU ; Björck, Svante LU ; Muscheler, Raimund LU ; Beer, Juerg and Kubik, Peter (2007) In Quaternary Science Reviews 26(7-8). p.829-835
Abstract
A 650-yr-long sediment sequence from a crater lake on Tristan da Cunha, South Atlantic, was analysed for its Be-10 content. Based on C-14 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 Be-10 content. During this period of highly organic sedimentation and closed vegetation, the pattern of Be-10 flux variations follows the Be-10 fluctuations from the GRIP ice core and estimated C-14 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... (More)
A 650-yr-long sediment sequence from a crater lake on Tristan da Cunha, South Atlantic, was analysed for its Be-10 content. Based on C-14 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 Be-10 content. During this period of highly organic sedimentation and closed vegetation, the pattern of Be-10 flux variations follows the Be-10 fluctuations from the GRIP ice core and estimated C-14 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 Be-10/C-14 records. Our data show not only the possibility of obtaining detailed enough Be-10 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. (c) 2007 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Quaternary Science Reviews
volume
26
issue
7-8
pages
829 - 835
publisher
Elsevier
external identifiers
  • wos:000248732200001
  • scopus:34248326071
ISSN
0277-3791
DOI
10.1016/j.quascirev.2006.12.016
language
English
LU publication?
yes
id
ad79feba-96a4-4729-af9e-59f68454de40 (old id 689793)
date added to LUP
2007-12-17 09:54:20
date last changed
2017-01-01 04:48:42
@article{ad79feba-96a4-4729-af9e-59f68454de40,
  abstract     = {A 650-yr-long sediment sequence from a crater lake on Tristan da Cunha, South Atlantic, was analysed for its Be-10 content. Based on C-14 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 Be-10 content. During this period of highly organic sedimentation and closed vegetation, the pattern of Be-10 flux variations follows the Be-10 fluctuations from the GRIP ice core and estimated C-14 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 Be-10/C-14 records. Our data show not only the possibility of obtaining detailed enough Be-10 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. (c) 2007 Elsevier Ltd. All rights reserved.},
  author       = {Ljung, Karl and Björck, Svante and Muscheler, Raimund and Beer, Juerg and Kubik, Peter},
  issn         = {0277-3791},
  language     = {eng},
  number       = {7-8},
  pages        = {829--835},
  publisher    = {Elsevier},
  series       = {Quaternary Science Reviews},
  title        = {Variable Be-10 fluxes in lacustrine sediments from Tristan da Cunha, South Atlantic: a solar record?},
  url          = {http://dx.doi.org/10.1016/j.quascirev.2006.12.016},
  volume       = {26},
  year         = {2007},
}