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

Radionuclide results from surface and hydrocast bottle samples were determined from high purity germanium detectors and calibrated against IAEA standards as described in Buesseler et al. (PNAS, 2012).

Concentrations of Cesium isotopes 137Cs and 134Cs are reported in units of Bq (1 Becquerel = one disintegration per second) per unit volume (Bq/meter^3).

Modification History:
Data version 2 (2012-12-17) 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.