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Updated: Jun 6, 2025

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Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
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量化形几何和白水覆盖率的的前冰川流,以支持基于过程的流温度建模
A L Dufficy1,2, B C Eaton2,3, R D Moore2
1Northwest Hydraulic Consultants Ltd. Seattle Washington USA.
概括
对于的前冰川流的站式液压几何关系是使用标记器注射和无人机摄影仪得出的. 白水覆盖面显著影响溪流的白度和温度,冰川的撤退可能会增加下游的变暖.
科学领域:
- * 水文学和河流地形学
- * 环境遥感 环境遥感
- * 水资源管理 水资源管理
背景情况:
- * 一站式液压几何 (AASHG) 描述了河流对排水的依赖性,这对于流水温度建模至关重要.
- * 的前冰河流对AASHG衍生具有挑战,原因是复杂的形态和流动动力学.
- *白水覆盖面影响溪流表面的白度,这是热能交换的关键因素.
研究的目的:
- * 通过使用新的方法来推导一个的进冰通道的AASHG关系.
- *量化白水覆盖面及其与排放的关系.
- *通过整合液压和热数据来支持基于过程的流体温度建模.
主要方法:
- * 结合跟踪剂注射与无人机摄影仪用于数据采集.
- *使用功率定律函数建模速度-放电和宽度-放电关系.
- * 量化白水覆盖面作为不同排放的河流表面积的一小部分.
主要成果:
- * 功率定律函数具有合理的特征速度-放电和宽度-放电关系,具有次范围变化.
- *白水覆盖率超过50%,在采样流量范围内与排放有显著的正线性关系.
- * 河流的白度可能高于模型中通常假设的;冰川的撤退可能会增加下游的变暖.
结论:
- *在的前冰川流中,AASHG关系和白水覆盖率可以使用集成遥感和追踪技术有效量化.
- * 显著的白水覆盖面在热模型中需要更高的白度值.
- * 冰川退缩引起的排放减少可能会降低河流的白度,增加下游变暖,加剧其他依赖流量的热效应.
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