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)

<p>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).</p>

<p>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).</p>

<p><strong>Modification History:</strong><br />
Data version 2 (2012-12-17)&nbsp;replaced&nbsp;Data version 1 (2012-10).<br />
Note that updated Cesium data measurements were contributed by Ken Buesseler in October 2012.&nbsp; The online dataset has been revised to include these measurements.&nbsp; A PDF version of these updates is available (See supplemental file&nbsp;WHOI_KOK_Cs_data_Table_S1_Oct_2012_update.pdf).&nbsp;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&nbsp; by 5% or more. The update reflects a second run of the chemical yields measured for stable Cs by ICPMS.</p>