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| Titel |
Continuing 137 Cs release to the sea from the Fukushima Dai-ichi Nuclear Power Plant through 2012 |
| VerfasserIn |
J. Kanda |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 10, no. 9 ; Nr. 10, no. 9 (2013-09-26), S.6107-6113 |
| Datensatznummer |
250085339
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| Publikation (Nr.) |
 copernicus.org/bg-10-6107-2013.pdf |
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| Zusammenfassung |
| The rate of cesium-137 (137Cs) release to the sea from the Fukushima
Dai-ichi Nuclear Power Plant for the period until September 2012 was
estimated. Publicly released data on 137Cs radioactivity in seawater
near the power plant by Tokyo Electric Power Company strongly suggest a
continuing release of radionuclides to the sea. The plant has an artificial
harbour facility, and the exchange rate of harbour water with surrounding
seawater was estimated by the decrease in radioactivity immediately after an
intense radioactive water release. The estimated exchange rate of water in
the harbour was 0.44 d−1 during the period from 6 to 19 April. The
137Cs radioactivity in the harbour water was substantially higher than
that of seawater outside and remained relatively stable after June 2011. A
quasi-steady state was assumed with continuous water exchange, and the
average release rate of 137Cs was estimated to be 93 GBq d−1 in
summer 2011 and 8.1 GBq d−1 in summer 2012. |
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