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https://hdl.handle.net/20.500.14094/90009087
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2024-05-06
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90009087 (fulltext)
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メタデータID
90009087
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open access
出版タイプ
Version of Record
タイトル
A storm-induced flood and associated nearshore dispersal of the river-derived suspended 137Cs
著者
Uchiyama, Yusuke ; Tokunaga, Natsuki ; Aduma, Kohei ; Kamidaira, Yuki ; Tsumune, Daisuke ; Iwasaki, Toshiki ; Yamada, Masatoshi ; Tadeda, Yutaka ; Ishimaru, Takashi ; Ito, Yukari ; Watanabe, Yutaka W. ; Ikehara, Ken ; Fukuda, Miho ; Onda, Yuichi
著者ID
A0968
研究者ID
1000080344315
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=321466d484cf497c520e17560c007669
著者名
Uchiyama, Yusuke
内山, 雄介
ウチヤマ, ユウスケ
所属機関名
先端融合研究環
著者名
Tokunaga, Natsuki
著者名
Aduma, Kohei
著者名
Kamidaira, Yuki
著者名
Tsumune, Daisuke
著者名
Iwasaki, Toshiki
著者名
Yamada, Masatoshi
著者名
Tadeda, Yutaka
著者名
Ishimaru, Takashi
著者名
Ito, Yukari
著者名
Watanabe, Yutaka W.
著者名
Ikehara, Ken
著者名
Fukuda, Miho
著者名
Onda, Yuichi
収録物名
Science of the Total Environment
巻(号)
816
ページ
151573
出版者
Elsevier B.V.
刊行日
2022-04-10
公開日
2022-03-30
抄録
Accidental leakage of radionuclides from the Fukushima Nuclear Power Plant (FNPP1) took place in the aftermath of the catastrophic tsunamis associated with the Great East Japan Earthquake that occurred on March 11, 2011. Significant amount of radionuclides released into the atmosphere were reportedly transported and deposited on land located near FNPP1. The Niida River, Fukushima, Japan, has been recognized as a terrestrial source of highly contaminated suspended radiocesium adhering to sediment particles in the ocean through the river mouth as a result of hydrological processes. Remaining scientific questions include the oceanic dispersal and inventories of the sediments and suspended radiocesium in the ocean floor derived from the Niida River. Complementing limited in situ data, we developed a quadruple nested 3D ocean circulation and sediment transport model in an extremely high-resolution configuration to quantify the transport processes of the suspended radiocesium. Particularly, we investigated the storm and subsequent floods associated with Typhoon 201326 (Wipha) that passed off the Fukushima coast in October 2013, and subsequently promoted precipitation to a considerable extent and associated riverine freshwater discharge along with sediment outfluxes to the ocean. Using in situ bed sediment core data obtained from regions near the river mouth, we conducted a quantitative assessment of the accumulation and erosion of the sediments and explored the resultant suspended radiocesium distribution around the river mouth and nearshore areas along the Fukushima coast. We identified three major accumulative areas, near the river mouth within an area < 1 km, around the breakwaters in the north of the river mouth, and along the southern coastal area, while offshore and northward transports were minor. The present study clearly exhibits substantial retention of the land-derived radiocesium adsorbed to the sediments in the coastal areas, leading to possible long-term influences on the surrounding marine environment.
キーワード
FNPP1 nuclear accident
Radiocesium-137
Suspended particulate radionuclides
Sediment transport
カテゴリ
先端融合研究環
学術雑誌論文
権利
© 2021 The Authors. Published by Elsevier B.V.
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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資源タイプ
journal article
言語
English (英語)
ISSN
0048-9697
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NCID
AA00836666
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関連情報
DOI
https://doi.org/10.1016/j.scitotenv.2021.151573
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