Secular variations in the production of cosmogenic isotopes in the earth's atmosphere

Details Secular variations in the production of cosmogenic isotopes in the earth's atmosphere Secular variations in the production of cosmogenic isotopes in the earth's atmosphere

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84..423o&link_type=abstract

Journal of Geophysical Research, vol. 84, Feb. 1, 1979, p. 423-431.

Physics

46

Geomagnetism, Secular Variations, Solar Terrestrial Interactions, Spallation, Beryllium 7, Carbon 14, Hadrons, Solar Activity Effects

Scientific paper

The dependence of cosmogenic isotope production on solar modulation and on geomagnetic field intensity has been calculated, and spallation yields based on the Silberberg-Tsao formalism have been determined. The stratospheric inventory of Be-7 during the period 1970-1974 has been calculated to be about 4.5 mCi, in good agreement with measured values. The calculated radiocarbon reservoir of 1.75/sq cm(e)/sec (where results are integrated over the whole earth) is in good agreement with the experimental value of 1.8. Geomagnetic and solar effects were taken into account.

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