Radon and thoron exhalation rate map in Japan

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

doi:10.1063/1.2991202

Radon and thoron exhalation rate map in Japan

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

Medical Sciences Education

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

16 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 language	English
Title of host publication	The Natural Radiation Environment - 8th International Symposium (NRE VIII)
Pages	177-180
Number of pages	4
DOIs	https://doi.org/10.1063/1.2991202
Publication status	Published - 2008
Event	8th International Symposium on the Natural Radiation Environment, NRE VIII - Buzios, Rio de Janeiro, Brazil Duration: 07-10-2007 → 12-10-2007

Publication series

Name	AIP Conference Proceedings
Volume	1034
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	8th International Symposium on the Natural Radiation Environment, NRE VIII
Country/Territory	Brazil
City	Buzios, Rio de Janeiro
Period	07-10-07 → 12-10-07

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1063/1.2991202

Cite this

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title = "Radon and thoron exhalation rate map in Japan",

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.",

author = "Masahiro Hosoda and Michikuni Shimo and Masato Sugino and Masahide Furukawa and Masahiro Fukushi and Kazuyuki Minami and Kazutaka Ejiri",

year = "2008",

doi = "10.1063/1.2991202",

language = "English",

isbn = "9780735405592",

series = "AIP Conference Proceedings",

pages = "177--180",

booktitle = "The Natural Radiation Environment - 8th International Symposium (NRE VIII)",

note = "8th International Symposium on the Natural Radiation Environment, NRE VIII ; Conference date: 07-10-2007 Through 12-10-2007",

}

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). AIP Conference Proceedings, vol. 1034, pp. 177-180, 8th International Symposium on the Natural Radiation Environment, NRE VIII, Buzios, Rio de Janeiro, Brazil, 07-10-07. https://doi.org/10.1063/1.2991202

TY - GEN

T1 - Radon and thoron exhalation rate map in Japan

AU - Hosoda, Masahiro

AU - Shimo, Michikuni

AU - Sugino, Masato

AU - Furukawa, Masahide

AU - Fukushi, Masahiro

AU - Minami, Kazuyuki

AU - Ejiri, Kazutaka

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

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T3 - AIP Conference Proceedings

SP - 177

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BT - The Natural Radiation Environment - 8th International Symposium (NRE VIII)

T2 - 8th International Symposium on the Natural Radiation Environment, NRE VIII

Y2 - 7 October 2007 through 12 October 2007

ER -

Radon and thoron exhalation rate map in Japan

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