Radiological site characterizations: gamma surveys, gamma/226Ra correlations, and related spatial analysis techniques
| Autor: | Michael Griffin, Ken Milmine, Randy Whicker, Jim Cain, Paul Cartier |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Geographic information system
Colorado Epidemiology Health Toxicology and Mutagenesis Statistics as Topic Radiation Dosage Sensitivity and Specificity Mining Radiation Monitoring Soil Pollutants Radioactive Radiology Nuclear Medicine and imaging Grid sampling Analysis method Remote sensing Data collection business.industry Sampling (statistics) Reproducibility of Results Spectrometry Gamma Gamma Rays Radon Radiological weapon Soil water Environmental science Uranium business |
| Zdroj: | Health physics. 95 |
| ISSN: | 1538-5159 |
| Popis: | Radiological surveys of uranium mill site in Colorado and several proposed uranium recovery sites in Wyoming were conducted in 2006 and 2007. Advancements in Global Positioning System (GPS)-based gamma scanning systems combined with gamma/ 226 Ra correlations and Geographic Information Systems (GIS)-based spatial analysis techniques produced comprehensive and detailed characterizations of the spatial distributions of gamma exposure rates and 226 Ra concentrations in surface soils across extensive study areas. Aside from limitations on gamma-based estimates of soil 226 Ra related to soil heterogeneity or gamma shine effects, soil sampling results to date show good general agreement between estimated and measured values. Spatial characterization aspects of the survey approach are clearly more effective than conventional grid sampling methods, particularly for such large sites. Example project applications, data collection and analysis methods, challenges encountered, and resulting mapped estimates of various aspects of these radiological parameters are presented. |
| Databáze: | OpenAIRE |
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