基于模拟的精细沉积物迁移评估，支持河流修复措施

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-07 DOI:10.1002/rra.4378

Flóra Pomázi, Sándor Baranya

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引用次数: 0

摘要

采用三维水动力和泥沙输运耦合模型模拟了匈牙利多瑙河某河段的悬浮泥沙输运情况。该案例研究的特点是，由于附近的支流流入、大量河流调节结构以及与多瑙河主干相连的多个支流，水文地貌系统非常复杂。本文根据在不同水文状态下测量到的流速和沉积物浓度的全面实地数据，建立了数值模型，并对其进行了参数化和验证。通过所选案例研究，本文介绍了：(i) 为什么在复杂水文地貌系统的达标分析中需要三维描述；(ii) 考虑到水流和沉积物特征的空间不均匀性，需要什么样的现场数据来对水动力和沉积物输运模型进行参数化和验证；(iii) 侧臂活化措施对沉积过程的定量影响评估实例，沉积过程对河流栖息地的质量起着至关重要的作用。

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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Simulation‐Based Assessment of Fine Sediment Transport to Support River Restoration Measures

A three‐dimensional coupled hydrodynamic and sediment transport model was employed to simulate the suspended sediment transport at a section of the Danube River, in Hungary. The case study is characterised by a highly complex hydromorphological system due to the nearby tributary inflow, the high number of river regulation structures as well as the several side‐arms connected to the Danube mainstem. The numerical model is set up, parameterised and validated against thorough field data of flow velocities and sediment concentrations measured at different hydrological regimes. Through the selected case study, the paper introduces (i) why 3D description is necessary at a reach‐scale analysis of complex hydromorphological systems; (ii) what sort of field data is needed to parameterise and validate a hydrodynamic and sediment transport model considering the spatial inhomogeneity of the flow and sediment features and (iii) an example for a quantitative impact assessment of side‐arm revitalisation measures on the sedimentation processes, playing a crucial role in the quality of riverine habitats.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.