Continuing leaks and contaminated sediment keep radiation levels high.
[...] New data presented at a conference held on 12–13 November at the University of Tokyo show that levels of radioactivity in the sea around the plant remain stable, rather than falling as expected. [...]
The Fukushima disaster caused by far the largest discharge of radioactivity into the ocean ever seen. A new model presented by scientists from Woods Hole Oceanographic Institution in Massachusetts estimates that 16.2 petabecquerels (1015 becquerels) of radioactive caesium leaked from the plant — roughly the same amount that went into the atmosphere.
[...] in the region of the ocean near the plant, levels of caesium-137 have remained fixed at around 1,000 becquerels, a relatively high level compared to the natural background. [...]
Researchers at the conference are convinced that something is preventing the radiation levels from dropping. “There must be a source,” says Scott Fowler, an oceanographer at Stony Brook University in New York.
In fact, a fresh analysis by oceanographer Jota Kanda at the Tokyo University of Marine Science [estimates] the plant itself is leaking around 0.3 terabecquerels [0.3 trillion becquerels] per month [...]
Watch: Fukushima plant "to keep contaminating the Pacific Ocean for the rest of time" if fuel can't be removed -- No good solution, must constantly pump out water from under buildings (VIDEO)
Published: November 14th, 2012 at 2:05 pm ET
- Scientist: Nuclear material “continuing to come from the reactor area” at Fukushima Daiichi — First researchers to test within 5 km of plant (VIDEO) May 14, 2013
- ‘Growing Alarm’: 25 trillion becquerels of Fukushima radioactive material leaks into ground — Kyodo News Advisory: Exact source of extreme contamination unknown; Tank missing 300,000 liters (VIDEO) August 20, 2013
- Officials reveal about 2 Trillion becquerels of Fukushima radioactive material flowed into ocean every month during 2013 — “Deadly strontium” releases now more than double cesium — “Strontium gets into your bones… it changes the equation” (VIDEO) August 29, 2014
- Radio: Fukushima Daiichi has “contaminated the biggest body of water on the planet” — Radioactive leaks to harm marine and human life — Whole Pacific Ocean likely to have cesium levels 5-10 times higher than at peak of nuclear bomb tests (AUDIO) July 29, 2013
- TV: Attempt to stop flow of highly radioactive liquid at Fukushima “in doubt” — AP: Much of it is pouring in trenches going out into Pacific — Experts: Amount entering ocean “increasing by 400 tons daily” — Problem “so severe” it’s consuming nearly all workers at site — Top Plant Official: “Little cause for optimism” (VIDEO) November 14, 2014