Published April 2011 | Version v1
Journal article Metadata-only

Terrestrial gamma ray dose rates in granitic rock terrains in Japan

Creators

  • 1. Radiation Earth Science Laboratory, Nagoya, Aichi (Japan)

Description

Air absorbed dose rates evaluated from uranium, thorium and potassium contents in rock samples (rock dose rate) have been compared with K2O data in order to understand lithologic characteristics of terrestrial γ-ray dose rate levels in granitic rock terrains. The comparison showed that the dose rate increased with increasing K2O content of rock. The crystallization differentiation model of magma was used to analyze this trend quantitatively. Next, data sets were compiled with respect to dose rate measured on soil (soil dose rate) and K2O content of bedrock at the corresponding site. A semi-empirical formula expressing the soil dose rate as a function of K2O content of rock was derived by comparing with the rock dose rate analysis. (author)

Availability note (English)

Available from http://dx.doi.org/10.3769/radioisotopes.60.181

Additional details

Identifiers

DOI
10.3769/radioisotopes.60.181;

Publishing Information

Journal Title
Radioisotopes (Tokyo)
Journal Volume
60
Journal Issue
4
Journal Page Range
p. 181-187
ISSN
0033-8303

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
42106771
Subject category
S54: ENVIRONMENTAL SCIENCES;
Descriptors DEI
BACKGROUND RADIATION; COMPLEX TERRAIN; DOSE RATES; GAMMA RADIATION; GRANITES; JAPAN; NATURAL RADIOACTIVITY; POTASSIUM OXIDES; THORIUM; URANIUM
Descriptors DEC
ACTINIDES; ALKALI METAL COMPOUNDS; ASIA; CHALCOGENIDES; DEVELOPED COUNTRIES; ELECTROMAGNETIC RADIATION; ELEMENTS; IGNEOUS ROCKS; IONIZING RADIATIONS; METALS; OXIDES; OXYGEN COMPOUNDS; PLUTONIC ROCKS; POTASSIUM COMPOUNDS; RADIATIONS; RADIOACTIVITY; ROCKS

Optional Information

Notes
58 refs., 3 figs., 1 tab.