高程数据源对二维水力建模的影响

IF 2 4区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

Acta Geophysica Pub Date : 2016-12-02 DOI:10.1515/acgeo-2016-0030

K. Bakuła, Mateusz StĘpnik, Z. Kurczynski

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引用次数: 9

摘要

本文的目的是分析各种高程数据来源对明渠水力建模的影响。在研究中，对来自不同数据集的数字地形模型进行了评估，并将其用于二维水力模型。使用以下航空和卫星高程数据来创建地形数字地形模型的表示:机载激光扫描，图像匹配，在LPIS, EuroDEM和ASTER GDEM中收集的高程数据。从5个不同输入高程数据的二维水动力模型的结果出发，导出了最大水深和水流速度，并与最精确的ALS数据结果进行了比较。为了进行这样的分析，准备了统计评估和水力模拟结果之间的差异。本研究证明了高程数据质量在水力建模中的重要性，并表明只有ALS和摄影测量数据才能成为精确的二维水力建模中最可靠的高程数据源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Influence of Elevation Data Source on 2D Hydraulic Modelling

The aim of this paper is to analyse the influence of the source of various elevation data on hydraulic modelling in open channels. In the research, digital terrain models from different datasets were evaluated and used in two-dimensional hydraulic models. The following aerial and satellite elevation data were used to create the representation of terrain–digital terrain model: airborne laser scanning, image matching, elevation data collected in the LPIS, EuroDEM, and ASTER GDEM. From the results of five 2D hydrodynamic models with different input elevation data, the maximum depth and flow velocity of water were derived and compared with the results of the most accurate ALS data. For such an analysis a statistical evaluation and differences between hydraulic modelling results were prepared. The presented research proved the importance of the quality of elevation data in hydraulic modelling and showed that only ALS and photogrammetric data can be the most reliable elevation data source in accurate 2D hydraulic modelling.

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来源期刊

Acta Geophysica 地学-地球化学与地球物理

CiteScore

3.90

自引率

13.00%

发文量

251

审稿时长

5.3 months

期刊介绍： Acta Geophysica is open to all kinds of manuscripts including research and review articles, short communications, comments to published papers, letters to the Editor as well as book reviews. Some of the issues are fully devoted to particular topics; we do encourage proposals for such topical issues. We accept submissions from scientists world-wide, offering high scientific and editorial standard and comprehensive treatment of the discussed topics.