Study of ambient gamma dose levels at national atmospheric research laboratory, Gadanki, India
| Autor: | Nagaraja Kamsali, T. Rajendra Prasad, K Charan Kumar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Correlation coefficient
Atmospheric pressure gadanki Geography Planning and Development meteorological parameters chemistry.chemical_element Radon radon gamma dose QC770-798 Management Monitoring Policy and Law Atmospheric sciences Atmospheric research Atmosphere chemistry Gamma dose Nuclear and particle physics. Atomic energy. Radioactivity Environmental science Relative humidity Precipitation |
| Zdroj: | Radiation Protection and Environment, Vol 44, Iss 1, Pp 28-33 (2021) |
| ISSN: | 0972-0464 |
| Popis: | Simultaneous observations of ambient gamma dose levels, temperature, relative humidity, and atmospheric pressure were carried out at National Atmospheric Research Laboratory (NARL), Gadanki, India (13.459°N and 79.175°E), from November 2011 to May 2014. The results show that about 92% of ambient gamma dose values lie between 150 and 200 nSv/h and best possible fit resulted in Gaussian fit with adjusted R2 of 0.99. A weak Pearson's correlation coefficient was found between ambient gamma dose levels and selected meteorological parameters measured over the location. No seasonal trend was observed in ambient gamma dose levels, but pronounced seasonal variations in temperature, relative humidity, and air pressure were found. A sudden increase in ambient gamma levels was observed during precipitation event (Nilam cyclone) and may be attributed to an additional contribution of precipitation washed 222Rn progeny aerosols within the atmosphere. The mean ambient gamma dose over NARL was 186 ± 4.3 nSv/h and is within world average given by UNSCEAR. |
| Databáze: | OpenAIRE |
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