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ID 20508
Eprint ID
20508
FullText URL
Title Alternative
Monitoring of Environmental Ionizing Radiation and Radioisotopes in Okayama City and the Vicinty (II) - An estimation of the external radiation from the environmental radiation dose -
Author
Mio, Mitsunobu
Tada, Mikiro
Ono, Bun-ichiro
Hachiya, Kinji
Satoh, Kimiyuki
Abstract
Monitoring of environmental ionizing radiation and radioisotopes in Okayama city and the vicinity was carried out from the point of view of the external radiation from the environmental radiation dose. Although the fluctuation of monthly detected radiation dose throughout the year was rather low at each observation point, the mean value of dose equivalent was varied between the place of observation. From the observation of the distribution of environmental radiation dose in Okayama city, it was assumed that its distribution was well corresponded with the distribution of igneous rocks. The concentrations of radioisotopes in various kinds of rocks corrected in Okayama city and its vicinity were determined. It became apparent that high concentrations of radioisotopes, such as (134)Cs, (40)K, (226)Ra and (228)Th, were detected in igneous rocks, such as granite, gabbro and rhyolitic tuff, although the contents in sedimentary rocks, such as pelite, schist, psammite and limestone, were rather low. This result was in good agreement with that of the distribution of radiation dose in Okayama city.
Note
論文
Published Date
1994-12-25
Publication Title
環境制御
Publication Title Alternative
Environmental Research and Control
Volume
volume16
Publisher
岡山大学環境管理センター
Publisher Alternative
Okayama University Administration Center for Environmental Science and Technology
Start Page
3
End Page
10
ISSN
0917-1533
NCID
AN1024789X
Content Type
Departmental Bulletin Paper
language
日本語
File Version
publisher
Refereed
True
Eprints Journal Name
erc