The sampled codfish was taken off Karakuwa near Kesennuma City: http://g.co/maps/m4cve マダラ:水揚げ自粛範囲拡大へ 北部沿岸にも ／宮城－ 毎日ｊｐ(毎日新聞)
Tokyo Electric Power Company says more radioactive wastewater has leaked from its Fukushima Daiichi nuclear plant and flowed into the sea. The water contained high levels of strontium.
Workers at the plant discovered water leaking from a pipe connected to a wastewater tank, at around 1:00 AM on Thursday.
Workers shut valves, and the flow stopped about an hour later.
TEPCO says about 12 tons of wastewater leaked from a disconnected joint in the pipe. The company also says it believes that a large portion of the water has flowed into the ocean through a nearby drainage ditch.
The utility is trying to determine how the joint became disconnected, and how much water poured into the sea.
Radioactive wastewater also leaked on March 26th from a different section of the same piping.
Last December, water leaked from another device within the plant compound.
Thursday, April 05, 2012 12:34 +0900 (JST)
They admitted it, finally
Like something out of a science fiction novel, Japan is considering a permanent “buffer zone” around the crippled Fukushima No. 1 nuclear power plant where residents will no longer be allowed to live.
４号機燃料プールが崩壊すれば日本の終わりを意味する (ZDF) (by LunaticEclipseNuke12)
The Tōhoku earthquake and tsunami of March 11, 2011, resulted in unprecedented radioactivity releases from the Fukushima Dai-ichi nuclear power plants to the Northwest Pacific Ocean. Results are presented here from an international study of radionuclide contaminants in surface and subsurface waters, as well as in zooplankton and fish, off Japan in June 2011. A major finding is detection of Fukushima-derived 134Cs and 137Cs throughout waters 30–600 km offshore, with the highest activities associated with near-shore eddies and the Kuroshio Current acting as a southern boundary for transport. Fukushima-derived Cs isotopes were also detected in zooplankton and mesopelagic fish, and unique to this study we also find 110mAg in zooplankton. Vertical profiles are used to calculate a total inventory of ∼2 PBq 137Cs in an ocean area of 150,000 km2. Our results can only be understood in the context of our drifter data and an oceanographic model that shows rapid advection of contaminants further out in the Pacific. Importantly, our data are consistent with higher estimates of the magnitude of Fukushima fallout and direct releases [Stohl et al. (2011) Atmos Chem Phys Discuss 11:28319–28394; Bailly du Bois et al. (2011) J Environ Radioact, 10.1016/j.jenvrad.2011.11.015]. We address risks to public health and marine biota by showing that though Cs isotopes are elevated 10–1,000× over prior levels in waters off Japan, radiation risks due to these radionuclides are below those generally considered harmful to marine animals and human consumers, and even below those from naturally occurring radionuclides.