In 2013, the Nansen Environmental and Remote Sensing Center in Norway used computer models to project the movement and dispersion of this radioactive plume. Although the results of this study have been cited in official Chinese government documents, they have not been widely publicized.
Levels to remain high through at least 2026
The researchers used two separate scenarios to model leakage of radioactivity from the Fukushima plant into the Pacific. The first scenario assumed continuous and constant leakage for 20 days, while the second assumed continuous and constant leakage for one year.
Although delivering differing estimates of total radiation, both models concluded that the pollution would remain in a relatively unified mass and take the same path across the ocean until crashing up against western North America. Both models show the plume colliding with the U.S. West Coast and beginning to spread out starting around late 2017, with a maximum concentration of radiation hitting the coast toward the end of 2018.
Following this collision, the plume is projected to disperse and spread north, south and west, with portions of it eventually crashing back into East Asia sometime between 2021 and 2026. Throughout this entire time period, however, the area of greatest radioactivity concentration will remain positioned along North America’s West Coast.
The researchers noted that the model does have certain limits, namely its failure to account for ocean ecology (which may alter the flow of radioactive material) and atmospheric fallout (which may increase the concentration of radioactive material in additional regions to those predicted by the model).
Cleanup efforts in shambles
More than three years after the disaster, the Fukushima plant remains crippled, contaminated and uncontained. Massive amounts of radioactive water continue to pile up at the plant and leak into the surrounding earth and ocean. Thus far, all plans by plant operator Tokyo Electric Power Co. (TEPCO) to stem the flow of this water by freezing the ground surrounding the plant have failed. More than 120,000 people evacuated from the area in 2011 are still unable to return to their homes, and criminal gangs have infiltrated cleanup operations.
In recent weeks, TEPCO has also been hit with a number of legal setbacks. A court ordered the company to pay nearly half a million dollars to the family of a woman who committed suicide just two months after being forcibly evacuated from her home near Fukushima. In August, a citizens’ judicial panel called for three former TEPCO executives to be prosecuted for their role in the disaster. TEPCO is also being sued by four workers seeking $600,000 in unpaid wages from their work in the plant’s clean-up and decommissioning operations.
“A year ago, the prime minister told the world that Fukushima was under control. But that’s not the case,” said Tsuguo Hirota, lawyer for the plaintiffs. “Workers are not getting promised hazard pay and skilled workers are leaving. It’s becoming a place for amateurs only, and that has to worry anyone who lives near the plant.”