Ken Buesseler, a chemical oceanographer at the Woods Hole Oceanographic Institution, almost single-handedly took on the job of analyzing water samples from the Pacific Ocean following the Fukushima explosion, meltdown and fire. He has continued this work for seven years, and has been carefully analyzing water samples collected by ships crossing the Pacific. It took about 3 1/2 years until trace amounts of the radioactive element being sampled (Cesium-137) were first detected in the ocean off the U.S. west coast. As discussed two weeks ago, the currents in the North Pacific move pretty slowly and there has now been seven years of dilution, decay and dispersion. The most recent samples analyzed and reported from along the central California coast (offshore Bodega Bay, Point Reyes and Morro Bay) indicate gradually increasing but very low concentrations of Cesium 137 (1 to 7 Becqerels per cubic meter of seawater — a unit of radiation that doesn’t mean much to most of us).
Santa Cruz Sentinel 31st March 2018 read more »