Published 2016 | Version v1
Journal article Metadata-only

Distribution of radon concentration in groundwater at the southwestern foot of Mt. Fuji

Creators

  • 1. National Institute of Advanced Industrial Science and Technology, Geological Survey of Japan, Tsukuba, Ibaraki (Japan)

Description

222Rn concentration in groundwater was investigated around the southwestern foot of Mt. Fuji. The results showed that 222Rn concentrations in water samples of the coastal area were higher than those of the inland area and its distribution seemed not to be correlated with the distribution of fault in the study area. In addition, most of the water samples with high 222Rn concentration showed relatively high strontium isotope ratio (87Sr/86Sr) indicating the influence of sand and gravel layer in alluvial fan. Consequently, the main factor for the increase of 222Rn concentration in groundwater at the coastal area was estimated the radioactive decay from 226Ra which is concentrated in the alluvial fan deposit. (author)

Availability note (English)

Available from DOI: https://doi.org/10.3769/radioisotopes.65.431

Abstract (Japanese)

富士山南西麓における地下水の222Rn濃度を調査した。その結果,沿岸域における水試料の222Rn濃度は内陸よりも高く,その分布は研究地域内の断層分布と相関性は認められなかった。また,高い222Rn濃度を示す水試料の多くは,扇状地における砂礫層の影響を示唆する高いストロンチウム同位体比(87Sr/86Sr)を示していた。したがって,沿岸域の地下水において222Rn濃度が増加する主な要因は,扇状地堆積物中に濃集する226Raからの放射性崩壊であると推測される。(著者)

Additional details

Additional titles

Original title (Japanese)
富士山南西麓における地下水の222Rn濃度分布

Identifiers

DOI
10.3769/radioisotopes.65.431;

Publishing Information

Journal Title
Radioisotopes (Online)
Journal Volume
65
Journal Issue
11
Journal Page Range
p. 431-439
ISSN
1884-4111

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
52097636
Subject category
S58: GEOSCIENCES;
Descriptors DEI
DEPOSITS; ELECTRIC CONDUCTIVITY; GEOLOGIC FAULTS; GEOLOGY; GLOBAL POSITIONING SYSTEM; GROUND WATER; ISOTOPE RATIO; LIQUID SCINTILLATION DETECTORS; PH VALUE; RADIATION MONITORING; RADIATIVE DECAY; RADIOACTIVITY; RADON 222; STRONTIUM 86; STRONTIUM 87; TRACER TECHNIQUES
Descriptors DEC
ALKALINE EARTH ISOTOPES; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; DAYS LIVING RADIOISOTOPES; DECAY; DIMENSIONLESS NUMBERS; ELECTRICAL PROPERTIES; ELECTRON CAPTURE RADIOISOTOPES; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; GEOLOGIC FRACTURES; GEOLOGIC STRUCTURES; HEAVY NUCLEI; HOURS LIVING RADIOISOTOPES; HYDROGEN COMPOUNDS; INTERMEDIATE MASS NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPE APPLICATIONS; ISOTOPES; MEASURING INSTRUMENTS; MONITORING; NUCLEI; OXYGEN COMPOUNDS; PARTICLE DECAY; PHYSICAL PROPERTIES; RADIATION DETECTORS; RADIOISOTOPES; RADON ISOTOPES; SCINTILLATION COUNTERS; STABLE ISOTOPES; STRONTIUM ISOTOPES; WATER

Optional Information

Notes
19 refs., 5 figs., 1 tab.