Jr. Prescott et Jt. Hutton, COSMIC-RAY CONTRIBUTIONS TO DOSE-RATES FOR LUMINESCENCE AND ESR DATING - LARGE DEPTHS AND LONG-TERM TIME VARIATIONS, Radiation measurements, 23(2-3), 1994, pp. 497-500
In previous work, we have discussed the way in which the contribution
of cosmic rays to the dose rates for TL/ESR dating depends on altitude
, latitude and depth below ground level. The present paper extends the
discussion to greater depths. Long-term changes in the geomagnetic fi
eld and the galactic cosmic ray intensity could affect the dose rate.
The effects are shown to be small over the past 500 ka in most circums
tances.