Investigating the source of radiocesium contaminated sediment in two Fukushima coastal catchments with sediment tracing techniques

Quantifying the dilution of the radiocesium contamination in Fukushima coastal river sediment (2011–2015)

Fallout from the Fukushima Dai-ichi nuclear power plant accident resulted in a 3000-km2 radioactive contamination plume. Here, we model the progressive dilution of the radiocesium contamination in 327 sediment samples from two neighboring catchments with different timing of soil decontamination. Overall, we demonstrate that there has been a ~90% decrease of the contribution of upstream contamin...

Fukushima-derived radiocesium in western North Pacific sediment traps

Introduction Conclusions References

Tracing suspended sediment sources in catchments and river systems.

Recent years have seen a growing awareness of the wider environmental significance of the suspended sediment loads transported by rivers and streams. This includes the importance of fine sediment in the transport of nutrients and contaminants, including phosphorus (P). Sediment source exerts a key control on the physical and geochemical properties of suspended sediment, including its P content,...

Sediment particle size and initial radiocesium accumulation in ponds following the Fukushima DNPP accident

This study used particle size analysis to investigate the initial accumulation and trap efficiency of radiocesium ((137)Cs) in four irrigation ponds, ~4-5 months after the Fukushima Dai-ichi nuclear power plant (DNPP) accident. Trap efficiency, represented by the inventory of (137)Cs in pond sediment to the inventory of radiocesium in soil surrounding the pond (i.e., total (137)Cs inventory), w...

Using Sediment Deposited in Small Reservoirs to Quantify Sediment Yield in Two Small Catchments of Iran