6:15 PM - 7:30 PM
[HCG34-P02] Estimates of a sediment yield and a outflow of radioactive Cs with 3D laser scanner
Keywords:F-TRACE project, accident at the Fukushima Daiichi Nuclear Power Station, 3D laser scanner, denudation rate
As a result of measurement, an amount of increase of sediment for 15 months is 0.5 m3. A denudation rate is 0.02 mm/year. This value is on the same level with denudation rates in meadows and forest, 10-2 - 10-1 mm/year (Fujiwara et al, 1999). And it is estimated that a variation of radioactive Cs is Cs-137:200,000,000 Bq, Cs-134:80,000,000 Bq.