Radon and thoron exhalation rate map in Japan

Masahiro Hosoda, Michikuni Shimo, Masato Sugino, Masahide Furukawa, Masahiro Fukushi, Kazuyuki Minami, Kazutaka Ejiri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

Measurements of radon and thoron exhalation rates have been done using the radon and thoron exhalation rate measuring instrument adopting the accumulation method. We obtained the 111 data in the 40 sites of the 14 prefectures in Japan. The arithmetic average value of the radon and thoron exhalation rates by all 111 data were obtained to be 8.6 mBq·m-2 ·s- and 0.80 Bq·m-2·s-1, respectively, and we have reported the radon and thoron exhalation rates in relation to the geological features. The relation between the exhalation rate and geology was shown that the exhalation rate had an increasing tendency in order of basic rock, neutral rock and acidic rock. We made the nationwide exhalation-rate map using the survey data of exhalation-rate of radon and thoron and the geological distribution map.

Original languageEnglish
Title of host publicationThe Natural Radiation Environment - 8th International Symposium (NRE VIII)
Pages177-180
Number of pages4
DOIs
Publication statusPublished - 26-09-2008
Event8th International Symposium on the Natural Radiation Environment, NRE VIII - Buzios, Rio de Janeiro, Brazil
Duration: 07-10-200712-10-2007

Publication series

NameAIP Conference Proceedings
Volume1034
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other8th International Symposium on the Natural Radiation Environment, NRE VIII
CountryBrazil
CityBuzios, Rio de Janeiro
Period07-10-0712-10-07

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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  • Cite this

    Hosoda, M., Shimo, M., Sugino, M., Furukawa, M., Fukushi, M., Minami, K., & Ejiri, K. (2008). Radon and thoron exhalation rate map in Japan. In The Natural Radiation Environment - 8th International Symposium (NRE VIII) (pp. 177-180). (AIP Conference Proceedings; Vol. 1034). https://doi.org/10.1063/1.2991202