D. Branford et Pm. Nelis, STUDY OF AIRBORNE RADIOACTIVITY NEAR TO THE HIGH WATER MARK AT DRIGG POINT, Journal of environmental radioactivity, 31(3), 1996, pp. 237-251
Measurements are reported on radionuclides collected at Drigg Point us
ing muslin screen aerosol collectors arranged along two transects lead
ing inland from the high water mark for similar to 300 m. The results
of seven long-term exposures, taken over periods of 1.0-8.2 weeks, and
three short-term exposures, taken over 1.5-2.2 h at different states
of the tide, are presented. A determination of gamma-ray emitting radi
onuclides collected by the screens wets used to determine the relative
concentrations of radioisotopes in the air as a function of distance
inland. Average wind speeds were calculated for each exposure using da
ta obtained from the nearby Eskmeals weather station. Reductions in th
e radionuclide concentrations vs distance inland calculated using the
SALT model of Nelis et al. (Atmos. Environ. 1994, 28, 3213-23) are sho
wn to reproduce the data reasonably well. It is concluded that the res
ults are useful for testing models of the radionuclide dispersion and
deposition. (C) 1996 Elsevier Science Limited