FISSION PRODUCT GAMMA ACTIVITY WITH NORTHERLY WINDS AND WITH SOUTHERLY WINDS
The gamma ray activity of particulate matter filtered from air samples of northerly winds and of southerly winds was studied during the period October 1961 to May 1965 with a scintillation spectrometer. It was found that the gamma activity at 0.75, 0.49, and 0.145 Mev was greater when the wind was southerly than when the wind was northerly during the months December through May; the opposite was true from June through September. The gamma ray activity was least during the summer of 1962, the decrease being more pronounced for southerly winds than for northerly winds. The results can be accounted for by modifying the Brewer-Dobson theory of stratospheric circulation so that during most of the year stratospheric debris first reaches the ground south of latitude 40 deg N. No diurnal effect on the gamma ray activity of the samples could be detected. (auth)
- Research Organization:
- Illinois Univ., Carbondale
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-18-002393
- OSTI ID:
- 4141300
- Journal Information:
- Science See Saiensu, Vol. Vol: 142; Other Information: Orig. Receipt Date: 31-DEC-64
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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