Presented: Oct. 16, 2012 in Hiroshima, Japan
Title: Assessment and characterization of radionuclide concentrations from the Fukushima Reactor release in the plankton and nekton communities of the Northern California Current
Delvan Neville (Oregon St. Univ.), Richard D. Brodeur (NOAA), A. Jason Phillips (OSU) and Kathryn Higley (OSU)
The incident at the Fukushima Daiichi nuclear plant released a substantial radioactive contamination into the environment. With the predominant wind and current flow in this part of the North Pacific, these radionuclides will gradually spread to the US West Coast waters after a suitable period of time, with the possibility of affecting food quality throughout the food web (including humans). In addition to the passive transport by currents and winds, the migratory pathways of large pelagic fish extend from Japan to the Northern California Current. These organisms can serve as transport vectors for these nuclides, especially given their capacity to concentrate radionuclides from surrounding waters and prey. [...] By predicting the radio-biologic stress (if any) for a managed species as more Fukushima-related radionuclides are uptaken, appropriate action may be taken before significant population effects have occurred. Determination of natural background concentrations and high quality transport models produced from these data also aid in management in the event of a future accidental release, and in regulating safe activity releases.
Oregon State University Press Release, Oct. 24, 2012:
[...] Phillips spent this summer collecting more fish at sea, off Oregon and Washington, as well as from scientists, fishermen and other sources along the West Coast. [...] As more fish were tested, the results were consistent with the initial findings: No Cs-134 in fish caught before the disaster, but traces of the isotope in a significant number of fish caught since. “This is what we’ve seen after testing about 70 pounds of tuna,” Neville said. [...]
No mention of the actual cesium levels detected in the tuna, only that it’s safe to eat.
Published: October 24th, 2012 at 9:27 pm ET
- USA Today: Radiation tripled in some albacore tuna off West Coast after Fukushima — Bioaccumulating in bones, not only flesh — “Additional exposures to plume could further increase radiation levels” — NOAA-funded study to expand after ‘significant’ findings (AUDIO) April 29, 2014
- Study: High concentrations of Fukushima radioactive material will reach west coast of North America — “Entire coast” to be affected from Alaska to Mexico — “Can negatively affect human life for decades… should raise concern” (MODEL) September 23, 2013
- Full California Tuna Study Now Online: Possibility of radioactive contamination raises public health concerns — Spent less than a month in waters near Japan — Turtles, sharks, birds also at risk? May 30, 2012
- Professor: California bluefin tuna may have been contaminated by radioactive substances from Fukushima that traveled across Pacific, rather than contamination off coast of Japan — We don’t know exactly what is happening (VIDEO) October 10, 2013
- U.S. bluefin tuna still contaminated with Fukushima radiation — Study: Cesium found in 100% of small, recently migrated tuna tested February 20, 2013