Early Online Release: Fukushima and Ocean Radioactivity, Ken O. Buesseler, Journal of The Oceanography Society, Jan. 5, 2014: [The] earthquake, tsunami, and subsequent radiation releases from Japan’s Fukushima Dai-ichi nuclear power plant were unprecedented events for the ocean and society. […] Total releases [of cesium-137] from Fukushima are not well constrained, with estimates from atmospheric fallout and direct ocean discharge spanning 4 to 90 peta Becquerels (PBq), but are most likely in the 15–30 PBq range. […] Cs concentrations in benthic fish stay elevated over predictions [...] Fukushima-tagged surface waters will reach the US West Coast [in the range of] two to four years […] To determine which model predictions are more accurate would require more extensive vertical sampling across the Pacific than is currently available. Some information will be forthcoming from analyses underway in Japan and the United States, and monitoring of coastal activities along the United States […] In the aftermath of Fukushima—after years of relative complacency— the public and policymakers have renewed concerns about radioactive contamination.
In this new article Buesseler states the total cesium-137 released from Chernobyl is 100 PBq, though just a few months ago he used 85 PBq as the total (see slide 4). The Nuclear Energy Agency’s original estimate of 85 PBq was later revised to 70 PBq when more accurate data became available. Using the 100 PBq total for Chernobyl instead of 85 PBq, or the most recent 70 PBq, removes the possibility of the reader being left with the impression that the Fukushima disaster (up to 90 PBq) may be the worst nuclear plant release in history.
During a recent presentation to the nuclear-related departments of the U.S. government at the Interagency Steering Committee on Radiation Standards, Buesseler appears to be proud of his ability to get media outlets to print his quotes that downplay the releases from the Fukushima plant. From slide 15:
Published: January 8th, 2014 at 3:48 pm ET
- Russian Study: Fukushima released 100 quadrillion becquerels of cesium into atmosphere… In just ONE day — About equal to Chernobyl’s total release August 29, 2013
- Japan Gov’t-funded Study: Fukushima has released up to 120 Quadrillion becquerels of radioactive cesium into North Pacific Ocean — Does not include amounts that fell on land — Exceeds Chernobyl total, which accounts for releases deposited on land AND ocean (MAP) June 30, 2014
- Study: Up to 47 quadrillion becquerels of cesium-137 released into Pacific from Fukushima — Nearly 50 times original Tepco estimate March 12, 2013
- EU-funded Research: Fukushima atmospheric release of 210 quadrillion becquerels of cesium-137 used as upper bound in simulation — Chernobyl estimated at 70 to 85 quadrillion September 23, 2013
- Gov’t Report: Fukushima released up to 181 Quadrillion Bq of cesium, Chernobyl was 105 Quadrillion — Radioactive material to flow from Japan “for years to come” — Fukushima radionuclides have now spread “throughout N. Pacific” May 20, 2014