Title: Radioactive fallout detected far from Fukushima
Source: Asahi Shimbun
Author: NOBUTARO KAJI
Date: September 11, 2012
A significant quantity of radioactive cesium, likely from the crippled Fukushima No. 1 nuclear power plant, has turned up in subsea mud about 200 kilometers away, near the mouth of the Shinanogawa River on Japan’s northwestern coast.
Scientists said samples taken in 2011 at Nagaoka, Niigata Prefecture, contained concentrations of up to 460 becquerels per kilogram of dry mud
The highest concentration was 2-3 cm below the mud surface at a water depth of 30 m. That reading of 460 becquerels per kg compares to samples of over 400 becquerels around the mouth of the Arakawa river in Tokyo Bay in August 2011.
Both readings are dozens of times higher than contamination detected after past atmospheric nuclear tests.
At a depth of 20 m the maximum concentration was 318 becquerels per kg, while at 15 m it was 255 becquerels.
Published: September 11th, 2012 at 3:48 am ET
- Asahi: Highest cesium levels in a year detected in Fukushima — 1,780,000 Bq/kg on downtown rooftop July 5, 2013
- Officials: ‘Nuclear fuel material’ leak at Fukushima — Japan TV: Record levels of radioactivity detected in seawater — Spiked “more than 200 times” at sampling location — Highest concentrations ever measured in 11 different areas (VIDEO) May 31, 2015
- “Significant concentrations” of Niobium-95 were reported by Japan gov’t after 3/11 -Study November 17, 2012
- ‘Mind-Boggling’: Far more cesium released from Fukushima than previously thought says Japan gov’t agency — 40,000 trillion becquerels estimated -Asahi February 29, 2012
- Weekly Asahi: 70% of children tested in Kanto (a region that includes Tokyo) have radioactive cesium in their urine -Journalist #Fukushima October 1, 2013