Title of article :
Modeling Environmental UV and Gamma Radiations for Health Protection
Author/Authors :
sajjadi, ali Department of Environmental Health Engineering -Social Determinants of Health Research Centre - School of Health - Gonabad University of Medical Sciences, Gonabad, Iran , ebrahimi, afshin Department of Environmental Health Engineering - School of Health - Isfahan University of Medical Sciences, Isfahan, Iran , chavoshian, afsane Department of Environmental Health Engineering - School of Health - Isfahan University of Medical Sciences, Isfahan, Iran , kianmehr, mojtaba Department of Medical physics - School of Health - Gonabad University of Medical Sciences, Gonabad, Iran , salari, samira Department of Medical physics - School of Health - Gonabad University of Medical Sciences, Gonabad, Iran
Abstract :
Background: Recently, increasing exposure to radiations such as ultraviolet (UV) and gamma has led to growing incidence of different
types of cancer and damage to aquatic and terrestrial ecosystems. Studies have shown that natural features such as latitude,
elevation, weathering, local pollution, cloudy cover and earth surface play a remarkable role in distribution of UV and gamma radiations.
In this regard, modeling and predicting UV and gamma rays distribution in each region is necessary.
Objectives: The purpose of this study was modeling environmental UV and gamma radiations in Gonabad city, Iran.
Methods: In this cross-sectional study, for modeling environmentalUVandgammaradiations, several stations inGonabadcity were
selected. Distance between two stations was 5 km, and a total of 1800 samples were collected from the considered region. UV and
gamma radiations were detected by radiometer and survey-meter, respectively. In the end, data were modeled by Kriging model in
GIS 10.3 and MATLAB software programs and their relationships were analyzed by performing t-test and ANOVA in SPSS version 16.
Results: The predicted values for UV andgammaranged from 0.03 to 1.829Wm-2 and from 0.08 to 0.42 mSv, respectively. The highest
UV and gamma doses were observed in the southwest region of Gonabad city. Minimum mean square error (MMSE) in GIS model
related to UV and gamma were 0.24 and 0.02, respectively. Based on MATLAB, distribution of UV and gamma radiations showed
high and low scattering, respectively, versus elevation and latitude. The most permanent weather condition for the measured UV
and gamma radiations was sunny condition. Weather conditions had a significant (P < 0.001) and insignificant relationship (P >
0.001) with UV and gamma radiations, respectively.
Conclusions: Integration of Kriging and MATLAB models led to obtaining more valuable estimates and maps about distribution of
UV and gamma radiations from solar and terrestrial resources and weather conditions in a large region. These models showed that
the population residing in mountainous areas received higher doses of UV and gamma radiations.
Keywords: Environmental Radiations, Modeling, Elevation, Latitude,Weather Condition, Gonabad, Iran
Keywords :
Environmental Radiations , Modeling , Elevation , Latitude , Weather Condition , Gonabad , Iran
Journal title :
Astroparticle Physics
