江戸川を通じて東京湾に流入する放射性物質量及び河口域堆積量の推定

大塚 文和; 吉松 亮一; 川西 利昌; 増田 光一

doi:10.2208/kaigan.72.I_1303

Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

Online ISSN : 1883-8944
Print ISSN : 1884-2399
ISSN-L : 1883-8944

Paper

A STUDY ON ESTIMATING THE AMOUNT OF RADIOACTIVE CESIUM FLOWING INTO TOKYO BAY FROM EDO-RIVER

Fumikazu OTSUKA, Ryoichi YOSHIMATSU, Toshimasa KAWANISHI, Koichi MASUDA

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Keywords: Edo river, sediment, Radioactive material, cesium134, cesium137, Tokyo bay

JOURNAL FREE ACCESS

2016 Volume 72 Issue 2 Pages I_1303-I_1308

DOI https://doi.org/10.2208/kaigan.72.I_1303

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Abstract

Radioactive materials were released from the Fukushima Daiichi Nuclear Power Plant as a result of the reactor accident after the 9.0 earthquake and subsequent tsunami of 11 March 2011. The radioactive cesium density in the Edo-river and the inflow amount of the radioactive cesium from Edo-river into the Tokyo Bay were estimated quantitatively. And, amount of sediment of radioactive cesium was estimated quantitatively in estuary area and front sea area of the mouth of Edo-river.

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