Observation of Dispersion in the Japanese Coastal Area of Released Sr, Cs, and Cs from the Fukushima Daiichi Nuclear Power Plant to the Sea in 2013.

The March 2011 earthquake and tsunami resulted in significant damage to the Fukushima Daiichi Nuclear Power Plant (FDNPP) and the subsequent release of radionuclides into the ocean. Here, we investigated the spatial distribution of strontium-90 (Sr) and cesium-134/cesium-137 (Cs) in surface seawater of the coastal region near the FDNPP. In the coastal region, Sr activity was high, from 0.