Higher radiation detected downstream in Fukushima, NHK, Wednesday, November 16, 2011:
Officials took sand samples from 2 rivers in September.
[...] The downstream levels of the [Niida] river in an area of Soma City were 13,000 becquerels. [...] measurements had tripled.
Cesium levels near the mouth of the Mano River in another part of Soma City had doubled from May.
Kinki University Professor Hideo Yamazaki says radioactive substances in riverbed sands are probably moving downstream, and radiation levels should be monitored near river mouths.
Published: November 16th, 2011 at 1:47 pm ET