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| Number of page views | : | 33 |
| Title | Catchment-scale distribution of radiocesium air dose rate in a mountainous deciduous forest and its relation to topography |
| Alternative title | 広葉樹森林集水域における空間線量率の分布とその地形との関係 |
| Publisher | Elsevier |
| Author | Atarashi-Andoh, Mariko |
| Author | Koarashi, Jun |
| Author | Takeuchi, Erina |
| Author | Tsuzuki, Katsunori |
| Author | Nishimura, Shusaku |
| Author | Matsunaga, Takeshi |
| Issued date | 2015-09 |
| Language | eng |
| Page | 1p.-7p. |
| Type | report |
| Description | We collected a large amount of radiocesium air dose rate data by mountain-walking with a small gamma-ray survey system, KURAMA-II, to create an air dose rate map of a mountainous deciduous forest that received radiocesium from the Fukushima Dai-ichi Nuclear Power Plant accident. Measurements were conducted in a small stream catchment 0.6 km2 in size in August and September 2013, and the relationship between air dose rates and the mountainous topography was examined. Air dose rates increased with elevation, suggesting that more radiocesium was deposited on ridges, and that it had remained there for 2.5 years with no significant migration due to soil erosion or water drainage. Slope aspect also strongly affected air dose rates. By the continuous measurement using KURAMA-II, we describe the variation in air dose rates in a mountainous area and suggest that it is important to consider topography when selecting sampling points to estimating dose rates or contaminant deposition. |
| Information source |  JOPSS Relation URLRelation URL |
| URI | https://f-archive.jaea.go.jp/dspace/handle/faa/211421 |
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