DOI: 10.1016/j.marpolbul.2017.06.071
Scopus记录号: 2-s2.0-85021813169
论文题名: Spatial assessment of radiocaesium in the largest lagoon in Fukushima after the TEPCO Fukushima Dai-ichi Nuclear Power Station accident
作者: Kambayashi S. ; Zhang J. ; Narita H.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2017
卷: 122, 期: 2018-01-02 起始页码: 344
结束页码: 352
语种: 英语
英文关键词: Dilution and diffusion process
; Effective half-life
; Fukushima-derived radiocaesium
; Intertidal area
; Re-suspended particles
; Surface sediment
Scopus关键词: Accidents
; Lakes
; Nuclear energy
; Nuclear fuels
; Nuclear reactor accidents
; Oceanography
; Seawater
; Sediments
; Surficial sediments
; Suspensions (fluids)
; Diffusion process
; Effective half-lives
; Intertidal area
; Radiocaesium
; Surface sediments
; Suspended particles
; Suspended sediments
; cesium
; sea water
; cesium
; accident
; cesium
; diffusion
; dilution
; lagoon
; nuclear power plant
; sediment pollution
; suspended particulate matter
; Article
; controlled study
; Fukushima nuclear accident
; half life time
; lagoon
; particle resuspension
; pollution transport
; radioactivity
; sediment
; tsunami
; analysis
; Japan
; radiation monitoring
; water flow
; water pollutant
; Fukushima [Tohoku]
; Honshu
; Japan
; Tohoku
; Verasper moseri
; Cesium Radioisotopes
; Fukushima Nuclear Accident
; Japan
; Radiation Monitoring
; Water Movements
; Water Pollutants, Radioactive
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Radionuclides deposited on land by global fallouts and nuclear power station accidents spread over coastal environments through estuarine areas connecting land to ocean. In this study, we monitored activity concentration of radiocaesium in surface sediment and re-suspended particles in Matsukawa-ura lagoon, the largest lagoon in Fukushima, after the TEPCO Fukushima Dai-ichi Nuclear Power Station accident. Radiocaesium distribution in surface sediment varied spatiotemporally and irregularly due to the effect of tidal waves. The effective half-life was significantly shorter than physical half-life, suggesting some system of radiocaesium discharge in the lagoon. Sediment trap observation revealed re-suspended particles from sediment were transported to the ocean. For these reasons, it is suggested that re-suspension of particles in the lagoon and their transportation to the ocean by the seawater exchange process are important processes of radiocaesium discharge. Moreover, our results show that seawater exchange process contributes to the dispersion of radiocaesium in the ocean. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/88060
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama, Japan; School of Marine Science and Technology, Tokai University, 3-20-1 Orido, Shimizu-ku, Shizuoka, Japan
Recommended Citation:
Kambayashi S.,Zhang J.,Narita H.. Spatial assessment of radiocaesium in the largest lagoon in Fukushima after the TEPCO Fukushima Dai-ichi Nuclear Power Station accident[J]. Marine Pollution Bulletin,2017-01-01,122(2018-01-02)