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首页> 外文期刊>Nordic hydrology >Modeling streamflow from coupled airborne laser scanning and acoustic Doppler current profiler data
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Modeling streamflow from coupled airborne laser scanning and acoustic Doppler current profiler data

机译：利用耦合的机载激光扫描和声多普勒电流剖面仪数据建模流

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摘要

The rating curve enables the translation of water depth into stream discharge through a reference cross-section. This study investigates coupling national scale airborne laser scanning (ALS) and acoustic Doppler current profiler (ADCP) bathymetric survey data for generating stream rating curves. A digital terrain model was defined from these data and applied in a physically based 1-D hydraulic model to generate rating curves for a regularly monitored location in northern Sweden. Analysis of the ALS data showed that overestimation of the streambank elevation could be adjusted with a root mean square error (RMSE) block adjustment using a higher accuracy manual topographic survey. The results of our study demonstrate that the rating curve generated from the vertically corrected ALS data combined with ADCP data had lower errors (RMSE = 0.79 m~3/s) than the empirical rating curve (RMSE = 1.13 m~3/s) when compared to streamflow measurements, We consider these findings encouraging as hydrometric agencies can potentially leverage national-scale ALS and ADCP instrumentation to reduce the cost and effort required for maintaining and establishing rating curves at gauging station sites similar to the Roan River.
机译：额定曲线使水深可以通过参考横截面转换为水流排放。这项研究调查耦合国家规模的机载激光扫描（ALS）和声学多普勒电流剖面仪（ADCP）测深调查数据，以生成水流等级曲线。根据这些数据定义了数字地形模型，并将其应用到基于物理的一维水力模型中，以生成瑞典北部定期监测位置的等级曲线。对ALS数据的分析表明，可以使用精度更高的人工地形测量方法，通过均方根误差（RMSE）块调整来调整高估河岸标高。我们的研究结果表明，垂直校正后的ALS数据与ADCP数据结合生成的额定曲线的误差（RMSE = 0.79 m〜3 / s）低于经验额定曲线（RMSE = 1.13 m〜3 / s）。与流量测量相比，我们认为这些发现令人鼓舞，因为水文计量机构可以潜在地利用国家规模的ALS和ADCP仪器来降低维护和建立类似于Roan River的水位站的等级曲线所需的成本和精力。

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  • 来源
    《Nordic hydrology》 |2017年第4期|981-996|共16页
  • 作者

    Norris Lam; Jason W.Kean; Steve W.Lyon;

  • 作者单位

    Department of Physical Geography,Stockholm University,Stockholm,106 91,Sweden and Bolin Centre for Climate Research,Stockholm University,Stockholm,106 91,Sweden;

    US Geological Survey,Denver,CO 80225,USA;

    Department of Physical Geography,Stockholm University,Stockholm,106 91,Sweden and Bolin Centre for Climate Research,Stockholm University,Stockholm,106 91,Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    acoustic Doppler current profiler; airborne laser scanning; rating curve; Sweden;

    机译：声学多普勒电流分析仪;机载激光扫描额定曲线瑞典;

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