...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Environmental Radioactivity >Contribution of radioactive Cs-137 discharge by suspended sediment, coarse organic matter, and dissolved fraction from a headwater catchment in Fukushima after the Fukushima Dai-ichi Nuclear Power Plant accident
【24h】

Contribution of radioactive Cs-137 discharge by suspended sediment, coarse organic matter, and dissolved fraction from a headwater catchment in Fukushima after the Fukushima Dai-ichi Nuclear Power Plant accident

机译：福岛第一核电站事故发生后，福岛源头集水区的悬浮沉积物，粗有机物和溶解级分对放射性Cs-137排放的贡献

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Radiocesium (Cs-137) migration from headwaters in forested areas provides important information, as the output from forest streams subsequently enters various land-use areas and downstream rivers. Thus, it is important to determine the composition of Cs-137 fluxes (dissolved fraction, suspended sediment, or coarse organic matter) that migrate through a headwater stream. In this study, the Cs-137 discharge by suspended sediment and coarse organic matter from a forest headwater catchment was monitored. The Cs-137 concentrations in suspended sediment and coarse organic matter, such as leaves and branches, and the amounts of suspended sediment and coarse organic matter were measured at stream sites in three headwater catchments in Yamakiya District, located-35 km northwest of Fukushima Dai-ichi Nuclear Power Plant (FDNPP) from August 2012 to September 2013, following the earthquake and tsunami disaster. Suspended sediment and coarse organic matter were sampled at intervals of approximately 1-2 months. The Cs-137 concentrations of suspended sediment and coarse organic matter were 2.4-49 kBq/kg and 0.85-14 kBq/kg, respectively. The Cs-137 concentrations of the suspended sediment were closely correlated with the average deposition density of the catchment. The annual proportions of contribution of Cs-137 discharge by suspended sediment, coarse organic matter, and dissolved fraction were 96-99%, 0.0092-0.069%, and 0.73-3.7%, respectively. The total annual Cs-137 discharge from the catchment was 0.02-0.3% of the deposition. (C) 2016 Elsevier Ltd. All rights reserved.
机译：从森林地区源头的migration（Cs-137）迁移提供了重要的信息，因为森林溪流的输出随后进入各种土地利用区域和下游河流。因此，确定通过源头水流迁移的Cs-137通量（溶解级分，悬浮沉积物或粗有机物）的组成很重要。在这项研究中，对Cs-137的排放进行了监测，这些悬浮物来自森林源头集水区的悬浮沉积物和粗有机物。在福岛Dai西北35公里处的Yamakiya区三个源头集水区的溪流站点测量了悬浮沉积物和粗有机物（如树叶和树枝）中Cs-137的浓度以及悬浮沉积物和粗有机物的量地震和海啸灾后的2012年8月至2013年9月的爱知县第一核电站（FDNPP）。大约每隔1-2个月对悬浮的沉积物和粗有机物进行采样。悬浮沉积物和粗有机物的Cs-137浓度分别为2.4-49 kBq / kg和0.85-14 kBq / kg。悬浮沉积物中Cs-137的浓度与集水区的平均沉积密度密切相关。悬浮沉积物，粗有机物和溶解部分对Cs-137排放的贡献的年度比例分别为96-99％，0.0092-0.069％和0.73-3.7％。流域每年Cs-137的总排放量为沉积物的0.02-0.3％。 （C）2016 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号