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KMID : 1151820130070050347
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Journal of the Korean Society of Radiology
2013 Volume.7 No. 5 p.347 ~ p.352
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Cross Correlation Analysis of Gamma Exposure Rates and Rainfall, Hours of Saylight, Average Wind Speed in Gangneung Area
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Cha Ho-Hwan
Kim Jae-Hwa
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Abstract
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In this study, we analyze the cross correlation between Gamma exposure rates and Rainfall, Hours of daylight, Average wind speed using cross-correlation coefficient ρDCCA and DCCA cross-correlation coefficient(DCCA ρ) method. Our data are measured simultaneous in Gangneung regional. First, we find the ρDCCA between Gamma exposure rates and Rainfall is Day(3~7days) 0.57~0.48, Month(30days) 0.39, Season(90days) 0.34, Year(360days) 0.26, between Gamma exposure rates and Hours of daylight is Day ?0.20~-0.23, Month ?0.22, Season ?0.17, Year ?0.13, between Gamma exposure rates and Average wind speed is Day ?0.10~-0.12, Month ?0.11, Season ?0.05, Year ? 0.05. Second, our finding is cross- correlation between Gamma exposure rates and Rainfall, is no cross-correlation between Gamma exposure rates and Hours of daylight, Average wind speed.
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KEYWORD
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Gamma exposure rates, Cross correlation coefficient ρDCCA, DCCA ρ, DFA
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