Dataset: Hydrocast isotope concentrations of Cesium 137 and 134 from the R/V Ka`imikai-O-Kanaloa KOK1108 cruise in June 2011 in the Northwest Pacific Ocean (Fukushima Radionuclide Levels project)

This dataset includes radionuclide results determined from high purity germanium detectors and calibrated against IAEA standards as described in Buesseler et al. (2012). Concentrations of Cesium isotopes Cs137 and Cs134 are reported in Bq per meter^3 from an underway system that was hull-mounted at a depth of approximately 2 meters.

Modification History:

Data version 2 (2012-12-18) replaced Data version 1 (2012-10).
Note that updated Cesium data measurements were contributed by Ken Buesseler in October 2012.  The online dataset has been revised to include these measurements.  A PDF version of these updates is available (See supplemental file WHOI_KOK_Cs_data_Table_S1_Oct_2012_update.pdf). The data are in the same format as Table S1 in the 2012 Buesseler et al. PNAS paper cited below. The net difference in old vs. new is 0.3%, but a few values have changed by 5% or more. The update reflects a second run of the chemical yields measured for stable Cs by ICPMS.