• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of the American Water Resources Association >Classification of Ephemeral, Intermittent, and Perennial Stream Reaches Using a TOPMODEL-Based Approach
【24h】

Classification of Ephemeral, Intermittent, and Perennial Stream Reaches Using a TOPMODEL-Based Approach

机译：使用基于TOPMODEL的方法对临时，间歇性和多年生河段进行分类

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

Whether a waterway is temporary or permanent influences regulatory protection guidelines, however, classification can be subjective due to a combination of factors, including time of year, antecedent moisture conditions, and previous experience of the field investigator. Our objective was to develop a standardized protocol using publically available spatial information to classify ephemeral, intermittent, and perennial streams. Our hypothesis was that field observations of flow along the stream channel could be compared to results from a hydrologic model, providing an objective method of how these stream reaches can be identified. Flow-state sensors were placed at ephemeral, intermittent, and perennial stream reaches from May to December 2011 in the Appalachian coal basin of eastern Kentucky. This observed flow record was then used to calibrate the simulated saturation deficit in each channel reach based on the topographic wetness index used by TOPMODEL. Saturation deficit values were categorized as flow or no-flow days, and the simulated record of streamflow was compared to the observed record. The hydrologic model was more accurate for simulating flow during the spring and fall seasons. However, the model effectively identified stream reaches as intermittent and perennial in each of the two basins.
机译：但是，无论是临时还是永久性航道，都会影响监管保护准则，归因于多种因素，包括一年中的时间，先前的湿度条件和现场调查人员的经验，可能是主观的。我们的目标是使用公开的空间信息来开发标准化协议，以对短暂流，间歇流和多年生流进行分类。我们的假设是，可以将沿河道的野外观测结果与水文模型的结果进行比较，从而提供一种可以确定这些河道如何到达的客观方法。流量状态传感器于2011年5月至2011年12月在肯塔基州东部的阿巴拉契亚煤盆地中短暂，断断续续地存在，并且常年流向。然后，根据TOPMODEL所使用的地形湿度指数，将该观察到的流量记录用于校准每个通道范围内的模拟饱和度不足。饱和度不足值分为流量天数或无流量天数，并将模拟流量记录与观测记录进行比较。水文模型对于模拟春季和秋季的流量更为准确。但是，该模型有效地确定了两个盆地中每个河流的断流和多年生河段。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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