Terrestrial cosmogenic-nuclide production systematics calculated from numerical simulations

Calculations for the production of cosmogenic nuclides in the Earth's atmospheric and in-situ in the surface are reported and discussed. We calculated production rates of H-3, Be-7, Be-10, C-14, and Cl-36 in the atmosphere by both galactic cosmic rays and solar protons, and our calculated production rates for C-14 agree well with previous results. Production of atmospheric Be-7 and Cl-36 by solar protons in polar regions is not negligible. Our production rates and depth dependences for in-situ He-3, Be-10, C-14, Ne-21, Al-26, and Cl-36 agree well with experimental measurements for certain minerals in surface samples. The altitude dependence of in-situ production rates was also calculated.