Physics
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985metic..20..403l&link_type=abstract
Meteoritics, volume 20, number 2, page 403.
Physics
8
Isotopic Studies
Scientific paper
Suess showed that tree rings contain a true record of fluctuations in atmospheric 14C/12C ratios, that the fluctuations were outside the errors of measurements and, therefore, the tree rings provide a record of the variations in the cosmic ray production rate and changes in the geochemical distribution of radio-carbon. In this paper the authors discuss briefly the geophysical records of a tree, and suggest that the 10Be content of tree samples may also permit measuring changes in the cosmic ray flux reaching them during the past ≤104 years. This should allow one to deduce maximum changes in the geomagnetic dipole field and solar activity during this period.
Arnold James R.
Lal Devendra
Nishiizumi Kuni
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