Fukushima radiation found in Hawaii fish — Almost half contain fallout from Japan nuclear disaster

University of Hawaii at Mānoa, 2017:

In the Wake of Fukushima: Radiocesium Inventories of Selected North Pacific Fish

Thirteen commonly consumed types of fish caught in the North Pacific and locally available in Hawaii were analyzed using gamma spectroscopy to measure Fukushima-derived and historic 134 Cs and 137 Cs isotopes. All fish samples had detectable 137 Cs above 95% Confidence Intervals. Three out of the thirteen samples had 134 Cs, an isotope indicative of Fukushima releases, detected above 95% Confidence Intervals. The highest 134 Cs and 137 Cs concentration in the examined species was in ahi tuna carrying 0.10±0.04 Bq/kg and 0.62±0.05 Bq/kg, respectively. Other samples with 134 Cs activities found above their 2-sigma uncertainty were albacore tuna and swordfish…

[W]hile the plume has not necessarily reached the Hawaiian Islands, it did travel within established fishing grounds across major migratory paths northeast of the islands…

Five samples showed the Fukushima tracer 134Cs, present above critical levels and at the 68% confidence interval (CI at 1-sigma uncertainty) but only three of those fish exhibited activities above the range of their 2 sigma uncertainty representing 95% CI…

Five samples showed evidence of Fukushima-derived 134Cs…

This study suggests that about 40% of fish tested here and are consumed on the islands of Hawai’i were recently exposed to the path of the Fukushima-derived radiocesium plume in the North Pacific Gyre…

Regular sampling of species that show signs of Fukushima-derived radiocesium may better inform us about the variability and spatial distribution of the released radiocesium isotopes.

See also: Senior Scientist on HBO: I’d worry about swimming in Hawaii’s ocean starting in 2015 due to Fukushima plume (VIDEO)

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