徳島大学 教育・研究者情報データベース(EDB)

1. 井村 裕吉

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2. (日) 清水 陸登

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3. 石田 啓祐

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4. 阪間 稔([徳島大学.大学院医歯薬学研究部.保健学域.保健科学部門.放射線科学系.放射線理工学]/[徳島大学.医学部.保健学科.放射線技術科学専攻.医用放射線科学講座])

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(英) A car-borne measurement of environmental radiation in Kagawa Prefecture, Shikoku, Japan

(日) 走行サーベイによる香川県の環境放射線調査

(英) After the accident of the Fukushima Daiichi nuclear power plant by the Great East Japan Earthquake on March 11, 2011, concern about radiation is increasing and monitoring of environmental radiation is performed even in Kagawa Prefecture. Then, we investigated for a short period of time for the purpose of creating the dose rate distribution map of Kagawa Prefecture while getting to know the dose rate of each municipality in Kagawa Prefecture in detail using a car-borne survey technique. As a result of measurement, the dose rates were low in the plain regions and those became high in the mountainous regions. Due to the average value of each municipality, the dose rates of municipalities in the southeastern prefecture, which contain Izumi Group and mountainous region affluent in granite, were high. The average dose rates of all municipalities in Kagawa Prefecture were obtained from this investigation, and the dose rate distribution map was created. From the tendency of the dose rate distribution in Kagawa, it has confirmed that a dose rate changed with geographical feature or geology.

(日) 走行サーベイによって香川県の環境放射線の線量率を調査し，各市町村の環境放射線の線量率分布図を作成した．地形的には環境中の放射線の線量率は平野部に比べ山間部で高くなった．山間部では走行路両側に近接する岩石や土壌に含まれる天然放射性核種からの放射線により線量率が高くなる．地質との関連では，和泉層群や花崗岩に富む県南東部の山間地域は高い線量率を示した．

1. (英) car-borne measurement
2. (英) environmental radiation
3. (英) Kagawa prefecture