E-viri
Recenzirano
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Higuchi, Ken; Arakawa, Hisayuki; Matsumoto, Akira; Narita, Kaoru; Morioka, Yoshiaki
Applied radiation and isotopes, September 2021, 2021-Sep, 2021-09-00, 20210901, Letnik: 175Journal Article
We collected continuous sedimentary 137Cs concentration data from a shallow fishery ground (Matsukawa-ura Lagoon, Fukushima, Japan) in 2016 using a new compact underwater NaI(Tl) scintillation spectrometer and a quantitative technique. 137Cs concentrations in sediments were low (approx. 40 Bq/kg DW) at the lagoon mouth and high (641.2 Bq/kg DW) at the head of the lagoon. Some areas of locally elevated 137Cs concentrations (>500 Bq/kg DW) were also found. •A seabed radioactivity monitor (S-RAM) measured 137Cs in shallow sea sediments.•The S-RAM offers low count times (60 s) and rapid measurements.•Concentrations of 137Cs in Matsukawa-ura Lagoon were 40–641.2 Bq/kg DW.•Isolated areas of high 137Cs (>500 Bq/kg DW) were detected in the southern lagoon.
