Tony Barboza writing for the LA Times has a straightforward and accurate account of U.S. West Coast real risks associated with Fukushima contamination. Not every media source is spreading fear, Mr. Barboza is doing an excellent job of sourcing information from real experts such as Nicholas Fisher of Stony Brook University, Kim Martini of University of Washington, and Ken Buesseler, of Woods Hole Oceanographic Institution. Excerpts:
Radiation detected off the U.S. West Coast from the Fukushima Daiichi nuclear plant in Japan has declined since the 2011 tsunami disaster and never approached levels that could pose a risk to human health, seafood or wildlife, scientists say.
Experts have been trying to dispel worries stemming from a burst of online videos and blog posts in recent months that contend radiation from Fukushima is contaminating beaches and seafood and harming sea creatures across the Pacific.
Those assertions are false and the concerns largely unfounded, scientists and government officials said last week, because Fukushima radionuclides in ocean water and marine life are at trace levels and declining — so low that they are trivial compared with what already exists in nature.
“There is no public health risk at California beaches due to radioactivity related to events at Fukushima,” the California Department of Public Health said in a statement.
Even at its worst in the months after the disaster, the dose of radioactivity that Fisher's lab found in tuna caught off California was far lower than what people are exposed to from medical X-rays or eating bananas or other potassium-rich foods, which contain naturally occurring radioactive isotopes.
The latest concerns are mostly driven by online videos, blogs and social media — including a post titled “28 Signs That the West Coast Is Being Absolutely Fried With Nuclear Radiation From Fukushima.”
Kim Martini, an oceanographer at the University of Washington, noticed a surge in outrageous worries about radiation in Seattle last fall, including people who were afraid to go to the beach and stopped eating seafood.
“Every single environmental issue was being blamed on Fukushima,” she said. “And I thought there's no way that can be true.”
Since then she and other scientists have been posting information on the blog Deep Sea News, with posts including “Is the sea floor littered with dead animals due to radiation? No.”
A magnitude 9.0 earthquake off Japan on March 11, 2011, triggered a series of tsunamis that crippled the Fukushima Daiichi nuclear power plant, releasing radiation into the ocean and atmosphere. Studies show that leaks from the facility continue to send radionuclides into the sea. But they dilute quickly in ocean water, scientists say.
Once those contaminants disperse across the Pacific Ocean and reach the West Coast, their concentration will be many thousands of times lower and not of concern, according to an online FAQ by Ken Buesseler, a marine scientist at the Woods Hole Oceanographic Institution.
“This is not to say that we should not be concerned about additional sources of radioactivity in the ocean above the natural sources, but at the levels expected even short distances from Japan, the Pacific will be safe for boating, swimming, etc.,” Buesseler wrote.
Good job Tony!