Fukushima radiation detected in Tillamook Bay, Gold Beach

[NWCorona]

18. Yes. It's called half-life and as the link states.

Cs134 and Cs137 has a t1?2 of 2 and 30 years.

The question I have is. Did you read the link?

"A recent InFORM analysis of Buesseler’s data concluded that concentrations of cesium-137 have increased considerably in the central northeast Pacific, although they still are at levels that pose no concern.

“It appears that the plume has spread throughout this vast area from Alaska to California,” the scientists wrote.

They estimated that the plume is moving toward the coast at roughly twice the speed of a garden snail.

Radiation levels have not yet peaked. “As the contamination plume progresses towards our coast we expect levels closer to shore to increase over the coming year,” Cullen said.""

And this quotation is from an actual scientist speaking on his scientific research.