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Using a Terrestrial Laser Scanner to assess the morphological dynamics of a gravel-bed river

机译：使用陆地激光扫描仪评估砾石河床的形态动力学

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摘要

Braided rivers are dynamic and complex environments shaped by the balance of the flow, sediment regimes and the influence of the riparian vegetation. The balance between sediment supply and transport capacity determines the morphological evolution of a river. The aim of the study is to analyse the short-term morphological dynamics and the processes of erosion and deposition along a sub-reach of a low impacted gravel-bed braided river (the Tagliamento River, Italy) using a Terrestrial Laser Scanner (TLS). The device used is a pulsed TLS able to collect up to 50 000 points per second at a spatial resolution up to one point per mm2. The study area is around 23 ha and has been surveyed before and after significant floods of recurrence interval approx. 15 years and 12 years. The differences of the two DEMs (DoD) computed revealed consistent episodes of erosion and deposition within the analysed area, showing a strong dynamic of the Tagliamento River.
机译：辫状河是动态，复杂的环境，受流量，泥沙状况和河岸植被影响的平衡影响。沉积物供应和运输能力之间的平衡决定了河流的形态演变。这项研究的目的是使用地面激光扫描仪（TLS）分析低影响的砾石层辫状河（意大利Tagliamento河）子河段的短期形态动力学以及侵蚀和沉积过程。 。所使用的设备是脉冲式TLS，能够以每秒每平方毫米1个点的空间分辨率每秒最多收集5万个点。研究区域约23公顷，在大范围复发间隔前后进行了调查。 15年和12年。计算得出的两个DEM（DoD）的差异揭示了分析区域内侵蚀和沉积的持续发生，表明塔格利亚门托河的动态很强。

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  • 来源
  • 会议地点 Chengdu(CN)
  • 作者

    L. PICCO; L. MAO; M. CAVALLI; E. BUZZI; E. RIGON; J. MORETTO; F. DELAI; D. RAVAZZOLO; LENZI MA;

  • 作者单位

    Department of Ecosystems and Environment, Pontificia Universidad Catolica de Chile, Santiago, Chile;

    CNR-IRPI, Corso Stati Uniti 4, 35127 Padova, Italy;

    Department of Land, Environment, Agriculture and Forestry, University of Padova - Agripolis 35020 Legnaro (PD), Italy;

    Department of Land, Environment, Agriculture and Forestry, University of Padova - Agripolis 35020 Legnaro (PD), Italy;

    Department of Land, Environment, Agriculture and Forestry, University of Padova - Agripolis 35020 Legnaro (PD), Italy;

    Department of Land, Environment, Agriculture and Forestry, University of Padova - Agripolis 35020 Legnaro (PD), Italy;

    Department of Land, Environment, Agriculture and Forestry, University of Padova - Agripolis 35020 Legnaro (PD), Italy;

    Department of Land, Environment, Agriculture and Forestry, University of Padova - Agripolis 35020 Legnaro (PD), Italy;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    difference of DEMs (DoD); terrestrial laser scanner (TLS); fluvial systems; morphological changes; tagliamento river, italy;

    机译：DEM（DoD）的差异；地面激光扫描仪（TLS）；河流系统；形态变化意大利塔利亚门托河;

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