Spatial variations of Ra-226, Ra-228, Cs-134, and Cs-137 concentrations in western and southern waters off the Korean Peninsula in July 2014 SCIE SCOPUS

Cited 3 time in WEB OF SCIENCE Cited 4 time in Scopus
Title
Spatial variations of Ra-226, Ra-228, Cs-134, and Cs-137 concentrations in western and southern waters off the Korean Peninsula in July 2014
Author(s)
Inoue, M.; Shirotani, Y.; Nagao, S.; Aramaki, T.; Kim, Y. I.; Hayakawa, K.
KIOST Author(s)
KIM, YOUNG IL(김영일)
Publication Year
2018-02
Abstract
We examined the spatial distributions of Ra-228, Ra-228, (CS)-C-134, and Cs-137 concentrations (activities) in seawater off the western and southern Korean Peninsula in July 2014. Raditun-228 (and Ra-226) concentrations in water samples varied widely from 5 to 14 mBq/L (2-4 mBq/L), showing a negative correlation with salinity, particularly at the surface off the western Korean Peninsula. This indicates that the seawaters in this area are fundamentally comprised of Ra-228-poor and high-saline Kuroshio Current water and Ra-228-rich and low-saline water (e.g., continental shelf water), with various mixing ratios. Although Fukushima Dai-ichi Nuclear Power Plant (FDNPP)-derived Cs-134 was below the detection limit (< 0.08 mBq/L) in waters off the western Korean Peninsula, low level Cs-134 (0.1-0.2 mBq/L) was detected in waters off the southern Korean Peninsula accompanied by higher Cs-137 concentrations (1.6-1.9 mBq/L) relative to that off the western Korean Peninsula. Combined with the lower radium concentrations, the detection of Cs-134 is explained by mixing of FDNPP-derived radiocesium-contaminated Kuroshio Current water.
ISSN
0265-931X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1020
DOI
10.1016/j.jenvrad.2017.11.020
Bibliographic Citation
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, v.182, pp.151 - 156, 2018
Publisher
ELSEVIER SCI LTD
Subject
POWER-PLANT ACCIDENT; EAST CHINA SEA; FUKUSHIMA NUCLEAR ACCIDENT; GROUNDWATER DISCHARGE SGD; YELLOW SEA; RA-228/RA-226 RATIO; COASTAL WATER; WARM CURRENT; JAPAN; MIGRATION
Keywords
Radiocesium; Radium; Eastern East China Sea; Kuroshio Current; Fukushima Dai-ichi Nuclear Power Plant; accident
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCI LTD
Related Researcher
Research Interests

Distribution and Behavior of Radionuclides in the Ocean,Total Massflux of Singking Particle in East Sea,Material Transport Process in the Ocean

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