GETFLOWS was applied to the Oginosawa river catchment in Kawauchi village. Fig.1 shows the distribution of erosion and deposition during May 2011 to December 2015, and Fig.2 shows residual ¹³⁷Cs in soil in percent.

• Erosion is dominant along rivers (Fig. 1 blue area).
• accordingly, residual ¹³⁷Cs tends to be lower adjacent to rivers (Fig. 2).
• Erosion is small in forest. The amount of ¹³⁷Cs discharge from forest is one order magnitude lower than that from the land adjacent to rivers.

• 

  Fig.1　Distribution of deposition/erosion from May 2011 to December 2015

• 

  Fig.2　Residual ¹³⁷Cs distribution

Sakuma, et al. (2018): J. Environ. Radioact. 182, 44-51

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Reference

1. Sakuma et al. (2017): J. Environ. Radioact. 169-170, 137-150