Identifying Existence Range of Diffusion Sources of Radioactive Small Particles

Kazunari Ishida

Identifying Existence Range of Diffusion Sources of Radioactive Small Particles

Kazunari Ishida * §

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§ Hiroshima Institute of Technology

Identifying Existence Range of Diffusion Sources of Radioactive Small Particles

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Abstract

One of the serious fears for Japanese society is contamination of radioactive substances due to the huge earthquake and subsequent Fukushima No. 1 nuclear power plant disaster. This paper proposes a detection method to identify diffusion sources of radioactive small particles in the air based on publicly available data, which are composed of air dose rate, amount of rain, wind speed, and direction. Air dose rate is observed on each public monitoring point. The nearest weather observation station for each public monitoring point concerning air dose rate is also identified to analyze the relationship between air dose rate and weather conditions. This method focuses on all cases of continuous rainfall duration, because various sizes of spike concerning air dose rate on a public monitoring point are observed among the cases. Each spike starts when rainfall begins and the spike disappears when rainfall continues. This is because rainfall cleans up radioactive particles in the atmosphere. The method confirms a statistically significant difference of increase rate of air dose rate between each pair among rainfall cases. It also identifies an existence range of direction of diffusion sources based on significance tests of correlation coefficients.

References

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Kazunari Ishida. 2014. "Identifying Existence Range of Diffusion Sources of Radioactive Small Particles". Global Journal of Human-Social Science - B: Geography, Environmental Science & Disaster Management GJHSS-B Volume 14 (GJHSS Volume 14 Issue 19 (B3)).

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GJHSS Volume 14 Issue 19 (B3)

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Journal Specifications

Crossref Journal DOI 10.17406/GJHSS

Print ISSN 0975-587X

e-ISSN 2249-460X

Keywords

air dose rate earthquake debris incineration plant radioactive small particles weather condition

Classification

GJHSS-B Classification FOR Code: 040699

Submission ReceivedDecember 7, 2013
Peer Review Double Blind
Handling Editor
Accepted January 5, 2014
Published April 18, 2014

Version of record

v1.2

Issue date

April 18, 2014

Language

English

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Article Matrices

Total Score: 146

Country: Japan

Subject: Global Journal of Human-Social Science - B: Geography, Environmental Science & Disaster Management

Authors: Kazunari Ishida (PhD/Dr. count: 0)

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Publish Date: 2014 04, Fri

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Total Views: 2K

Total Downloads: 127

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