THE USE OF CS-137 AS A TRACER IN AN EROSION STUDY IN SOUTH LIMBURG (THE NETHERLANDS) AND THE INFLUENCE OF CHERNOBYL FALLOUT

被引：32

作者：

DEROO, APJ

机构：

[1] Institute of Geographical Research, University of Utrecht, Utrecht, 3584 CS

来源：

HYDROLOGICAL PROCESSES | 1991年 / 5卷 / 02期

关键词：

CS-137; SOIL EROSION; CHERNOBYL; GEOSTATISTICS; DIGITAL ELEVATION MODELS; SOIL EROSION MODELS;

D O I：

10.1002/hyp.3360050208

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

The Cs-137 radioactivity of soils was used as a tracer of soil erosion in a catchment in the Netherlands: 143 samples were analysed to map the Cs-137 redistribution using geostatistical interpolation methods. Caesium-137 activities on grassland are significantly higher than on arable land. Also, Cs-137 activities on waning slopes are higher and activities on steep slopes are lower. The soil erosion estimates, derived from the Cs-137 data, are used to validate the USLE erosion model. The recent Chernobyl nuclear accident also contributed to the Cs-137 activity. However, the Chernobyl input of Cs-137, with a constant ratio of 1.765:1 to Cs-134, cannot be used as a tracer of soil erosion. Because of the rapid decay of Cs-134, we will not be possible to separate the sources of Cs-137 in the near future in areas significantly influenced by Chernobyl fallout and in these areas Cs-137 can no longer be used as a soil erosion tracer.

引用

页码：215 / 227

页数：13

共 43 条

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