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Constraints on long-term changes in solar activity from the range of variability of cosmogenic radionuclide records

Muscheler, R. LU orcid and Heikkilä, U. (2011) In Astrophys. Space Sci. Trans. 7(3). p.355-364
Abstract
There is a variety of different cosmogenicradionuclide-based reconstructions of solar activity varia-tions for the past. Especially the longer-term changes andthe absolute levels of past solar activity are uncertain as it isillustrated by the differences between these reconstructions.On the one hand there are differences between10Be and14Crecords that are commonly used as proxies for the varying so-lar modulation of galactic cosmic rays. On the other hand es-timates of past changes in the geomagnetic shielding also in-clude relatively large uncertainties. Here, we concentrate onvariations in cosmogenic radionuclide records on time scalesof 50 to 500 yr. We show that these are to a large extentindependent of the ... (More)
There is a variety of different cosmogenicradionuclide-based reconstructions of solar activity varia-tions for the past. Especially the longer-term changes andthe absolute levels of past solar activity are uncertain as it isillustrated by the differences between these reconstructions.On the one hand there are differences between10Be and14Crecords that are commonly used as proxies for the varying so-lar modulation of galactic cosmic rays. On the other hand es-timates of past changes in the geomagnetic shielding also in-clude relatively large uncertainties. Here, we concentrate onvariations in cosmogenic radionuclide records on time scalesof 50 to 500 yr. We show that these are to a large extentindependent of the geomagnetic field intensity. The rangeof variability of cosmogenic radionuclide records allows usto set constraints about long-term changes in solar activity.These records indicate that present solar activity levels werereached or exceeded regularly in the past (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Astrophys. Space Sci. Trans.
volume
7
issue
3
pages
10 pages
publisher
Copernicus Publications
external identifiers
  • scopus:80052755982
ISSN
1810-6536
DOI
10.5194/astra-7-355-2011
language
English
LU publication?
yes
id
a4c14eb3-cd0c-48e4-9ae3-fe08613d44c4
date added to LUP
2019-05-20 13:27:13
date last changed
2020-09-02 04:33:20
@article{a4c14eb3-cd0c-48e4-9ae3-fe08613d44c4,
  abstract     = {There  is  a  variety  of  different  cosmogenicradionuclide-based  reconstructions  of  solar  activity  varia-tions for the past.   Especially the longer-term changes andthe absolute levels of past solar activity are uncertain as it isillustrated by the differences between these reconstructions.On the one hand there are differences between10Be and14Crecords that are commonly used as proxies for the varying so-lar modulation of galactic cosmic rays. On the other hand es-timates of past changes in the geomagnetic shielding also in-clude relatively large uncertainties. Here, we concentrate onvariations in cosmogenic radionuclide records on time scalesof  50  to  500 yr.   We  show  that  these  are  to  a  large  extentindependent  of  the  geomagnetic  field  intensity.   The  rangeof variability of cosmogenic radionuclide records allows usto set constraints about long-term changes in solar activity.These records indicate that present solar activity levels werereached or exceeded regularly in the past},
  author       = {Muscheler, R. and Heikkilä, U.},
  issn         = {1810-6536},
  language     = {eng},
  month        = {09},
  number       = {3},
  pages        = {355--364},
  publisher    = {Copernicus Publications},
  series       = {Astrophys. Space Sci. Trans.},
  title        = {Constraints on long-term changes in solar activity from the range of variability of cosmogenic radionuclide records},
  url          = {http://dx.doi.org/10.5194/astra-7-355-2011},
  doi          = {10.5194/astra-7-355-2011},
  volume       = {7},
  year         = {2011},
}