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Observations of fallout from the Fukushima reactor accident in San Francisco Bay area rainwater

Date:
September 21, 2011
Source:
Public Library of Science
Summary:
Researchers report that Japan's power plant accident fallout extended as far as the San Francisco Bay area, resulting in elevated levels of radioactive material that were nonetheless very low and posed no health risk to the public.

After the magnitude 9.0 earthquake and resulting tsunami in Japan on March 11, 2011, the Fukushima Dai-ichi power plant was severely compromised and radioactive material was found in the water in many of the surrounding areas, but the extent of this contamination remained unknown.

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In a study published in the online journal PLoS ONE, researchers report that the reactor accident fallout extended as far as the San Francisco Bay area, resulting in elevated levels of radioactive material that were nonetheless very low and posed no health risk to the public.

The researchers collected rainwater samples in Berkeley, Oakland, and Albany, California from March 16th to March 26th and examined them for the presence of above-normal amounts of radioactivity, measuring levels of radioactive isotopes of cesium, iodine, and tellurium. The first sample that showed elevated radioactivity was collected on March 18th, and levels peaked on March 24th before returning to normal.

This work was supported by the United States Department of Homeland Security, and by the United States Department of Energy.


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Eric B. Norman, Christopher T. Angell, Perry A. Chodash. Observations of Fallout from the Fukushima Reactor Accident in San Francisco Bay Area Rainwater. PLoS ONE, 2011; 6 (9): e24330 DOI: 10.1371/journal.pone.0024330

Cite This Page:

Public Library of Science. "Observations of fallout from the Fukushima reactor accident in San Francisco Bay area rainwater." ScienceDaily. ScienceDaily, 21 September 2011. <www.sciencedaily.com/releases/2011/09/110921172840.htm>.
Public Library of Science. (2011, September 21). Observations of fallout from the Fukushima reactor accident in San Francisco Bay area rainwater. ScienceDaily. Retrieved March 5, 2015 from www.sciencedaily.com/releases/2011/09/110921172840.htm
Public Library of Science. "Observations of fallout from the Fukushima reactor accident in San Francisco Bay area rainwater." ScienceDaily. www.sciencedaily.com/releases/2011/09/110921172840.htm (accessed March 5, 2015).

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