Lateral variation of 134Cs and 137Cs concentrations in surface seawater in and around the Japan Sea after the Fukushima Dai-ichi Nuclear Power Plant accident

Inoue, Mutsuo; Kofuji, Hisaki; Nagao, Seiya; Yamamoto, Masayoshi; Hamajima, Yasunori; Yoshida, Keisuke; Fujimoto, Ken; Takada, Tsuyoshi; Isoda, Yutaka

doi:10.1016/j.jenvrad.2012.01.004

Cited by 60 publications

(30 citation statements)

References 11 publications

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“…2.10 ). Inoue et al ( 2012 ), Wu et al ( 2012 ), and Kim et al ( 2012 ) reported 134 Cs at trace levels in the Japan Sea, the East China Sea, and around the Korean , and in other areas, including the Japan Sea, the Seto Inland Sea, the East China Sea, and the Bering Sea ( cross ) (Modifi ed from Kaeriyama et al 2014b ) Peninsula, respectively. These results demonstrated that FNPP-derived radioactive Cs slightly affected the Japan Sea, the East China Sea, the Seto Inland Sea, and the Bering Sea.…”

Section: Cs and 137 Cs Around Japan Islandsmentioning

confidence: 99%

134Cs and 137Cs in the Seawater Around Japan and in the North Pacific

Kaeriyama

2015

Impacts of the Fukushima Nuclear Accident on Fish and Fishing Grounds

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Section: Cs and 137 Cs Around Japan Islandsmentioning

confidence: 99%

134Cs and 137Cs in the Seawater Around Japan and in the North Pacific

Kaeriyama

2015

Impacts of the Fukushima Nuclear Accident on Fish and Fishing Grounds

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“…1) were smaller than those seen in the western North Pacific Ocean (Inoue et al 2012c). Similarly, radiocesium concentrations in the Tsugaru Warm Current water (a branch of the Tsushima Current) flowing out of the Japan Sea through the Tsugaru Strait, were markedly lower than those in the western North Pacific Ocean (Inoue et al 2012c).…”

mentioning

confidence: 78%

“…Similarly, radiocesium concentrations in the Tsugaru Warm Current water (a branch of the Tsushima Current) flowing out of the Japan Sea through the Tsugaru Strait, were markedly lower than those in the western North Pacific Ocean (Inoue et al 2012c). It is thought that the Tsugaru and Oyashio Currents Table 1 could have inhibited the transport and diffusion of 134 Cs and 137 Cs to the coastal areas off Hokkaido (Inoue et al 2012c, Honda et al 2012 (Fig. 1) Cs tends to concentrate through the food chain in the marine ecosystem (Kasamatsu & Ishikawa 1997, Kasamatsu et al 1999.…”

mentioning

confidence: 98%

Radiocesium contamination of cetaceans stranded along the coast of Hokkaido, Japan, and an estimation of their travel routes

Nakamura¹,

Kimura²,

Matsuda³

et al. 2015

Mar. Ecol. Prog. Ser.

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We analyzed radiocesium ( 134 Cs and 137 Cs) levels in the muscle tissue of several odontocetes and mysticetes stranded on the coast of Hok kaido (the northernmost island of Japan) in 2011 and 2012, following the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident in March 2011. Since most of the radiocesium from the FDNPP was released into the western North Pacific Ocean and carried eastward from the Japan coast, there was little radiocesium contamination in the seawater around Hok kaido. Hokkaido is surrounded by the North Pacific Ocean, the Japan Sea, and the Okhotsk Sea, but radiocesium was predominantly detected in the cetaceans stranded along the North Pacific coast between June and October 2011. Among the stranded cetaceans, which included the Pacific white-sided dolphin, harbour porpoise and Dall's porpoise (odontocetes) as well as the common minke whale and humpback whale (mysticetes), the highest level of contamination was found in a common minke whale. The radiocesium contamination of these ceta ceans suggests that they moved seasonally from the south of Hokkaido, particularly through the contaminated area of the western North Pacific Ocean. The radiocesium levels in the tissues of these animals is likely a result of the contamination level of the seawater along their travel route, rather than their trophic level, because of the sudden changes in radiocesium transport and diffusion in seawater that occurred in 2011. Cs contamination in Pacific white-side dolphins suggests they had travelled from the contaminated waters near the Fukushima nuclear power plant.

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“…In addition, some investigations were carried out in the Japan Sea and the Okhotsk Sea, and 134 Cs was detected at the northeastern part of the Japan Sea, Hokkaido coast and Tohoku coast [8][9] .…”

Section: Tokyo Electric Power Company (Tepco) Fukushimamentioning

confidence: 99%

Observation of radiocesium in seabed soil at the Notsuke Strait of the southern Okhotsk Sea derived from the Fukushima Daiichi Nuclear Power Plant

Nabae

Miyashita

Nakashima

2016

Radiat. Saf. Manage.

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Seabed soils of the southern Okhotsk Sea at the Notsuke Strait, Hokkaido were collected, and the radioactivity was measured with a Ge semiconductor detector. Trace amount of radiocesium derived from the Fukushima Daiichi Nuclear Power Plant was detected. It was suggested by combining other results that this radiocesium was originally deposited in western Fukushima from the Fukushima Daiichi Nuclear Power Plant, and migrated to the Japan Sea with the Agano River, and then carried to the Notsuke Strait by Tsushima Warm Current and Soya Warm Current.

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Lateral variation of 134Cs and 137Cs concentrations in surface seawater in and around the Japan Sea after the Fukushima Dai-ichi Nuclear Power Plant accident

Cited by 60 publications

References 11 publications

134Cs and 137Cs in the Seawater Around Japan and in the North Pacific

134Cs and 137Cs in the Seawater Around Japan and in the North Pacific

Radiocesium contamination of cetaceans stranded along the coast of Hokkaido, Japan, and an estimation of their travel routes

Observation of radiocesium in seabed soil at the Notsuke Strait of the southern Okhotsk Sea derived from the Fukushima Daiichi Nuclear Power Plant

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