三宅島の環境放射線 (能)

• 細田 正洋

  中央医療技術専門学校 東京都立保健科学大学大学院

• 福士 政広

  首都大学東京

• 杉野 雅人

  群馬県立県民健康科学大学

• 古川 雅英

  琉球大学

• 下 道國

  藤田保健衛生大学

書誌事項

タイトル別名

• The Natural Radiation on Miyake-jima of the Izu Islands, Japan
• ミヤケジマ ノ カンキョウ ホウシャセン ノウ

抄録

In order to confirm the radiation safety for an active volcanic island, Miyake-jima, environmental radiation and radioactivity have been investigated. The average, minimum and maximum of the environmental gamma-ray dose rates were estimated to be 18.6nGy·h^-1, 6.7nGy·h^-1 and 29.2nGy·h^-1, respectively. For the radioactivity in soils, the averages of ²³⁸U, ²³²Th and potassium concentrations were found from calculations to be 0.38μg·g^-1, 0.43μg·g^-1 and 0.38%, respectively. The radon exhalation rate was below the detection limit, and the average value of thoron exhalation rate was estimated to be 38mBq·m^-2·s^-1. These results are clear evidence that the radiation level and radioactivity on Miyake-jima are lower than the averages in other parts of Japan. It was confirmed that Miyake-jima is presently a safe island in terms of environmental radiation and radioactivity level.

収録刊行物

• 保健物理

  保健物理 40 (4), 365-371, 2005

  日本保健物理学会

キーワード

• Miyake-jima
• environmental radiation
• environmental radioactivity
• dose rate
• ²³⁸U
• ²³²Th
• potassium
• radon
• thoron
• exhalation rate

詳細情報

• CRID: 1390282679266114048
• NII論文ID: 110004665034
• NII書誌ID: AN00228458
• DOI: 10.5453/jhps.40.365
• COI: 1:CAS:528:DC%2BD28Xis1Kjsrw%3D
• ISSN: 18847560
• ISSN: 03676110
• ISSN: http://id.crossref.org/issn/03676110
• NDL書誌ID: 7863044
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7863044
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可