Sediment Transport and Infrastructure Scour

Dear Colleagues,

The monitoring of sediment transport and estimation of the morphodynamic behavior of the riverbed through erosion and deposition patterns are fundamental problems in fluvial geomorphology, especially in rivers suffering from extensive hydromorphological pressures. Sediment transport presents a continuous research challenge because of its impact on hydraulic structures, infrastructure, waterways, confluences, or naturally morphologically variable zones like confluences and deltas. Such processes can vary across a wide range of scales, from the particle scale to the landscape scale, which can directly impact both the form (geomorphology) and function (ecology and biology) of natural systems and the built infrastructure surrounding them. The significance of the physical alterations of rivers—natural or anthropogenic—is correlated with the increasing frequency, intensity, and duration of natural hazards driven by climate change. To bridge the gap between observations in nature and the underlying processes governing sediment transport, innovative measurement techniques and analysis methods are continuously developing, integrating experimental, numerical, and data-driven approaches to research. The aim of this Special Issue is to collect the results of research on all modes of sediment transport that investigate the relationship between sediment transport and fluvial morphology and contribute to filling the knowledge gap in morphodynamic processes at different scales, with an outlook toward the influence on infrastructure, mainly on bridges and adjacent river training structures. This Special Issue intends to build upon the concluded Special Issue titled "Sediment Transport" (https://www.mdpi.com/journal/applsci/special_issues/Sediment), expanding to popularize some of the findings of the ongoing project R3PEAT focusing on scour around bridges (www.grad.hr/r3peat). Specific themes of this Special Issue include the following: the maintenance and regulation of large rivers and navigational waterways, bedform dynamics, local scour at bridge piers and abutments, contraction scour, erosion around river training structures, monitoring systems of sediment transport and river bathymetry, sediment entrainment, and incipient thresholds tackling rapidly changing environmental conditions.

As Guest Editors, we invite research articles, state-of-the-art reviews, applied research works, case studies, and any corresponding concepts that contribute to the development of the field. The contributions to this Special Issue can include laboratory and field experimental studies, mathematical theories, the development of numerical or experimental methodologies at various spatial and time scales, and frameworks for developing monitoring instruments and guidelines.

Dr. Gordon Gilja
Dr. Manousos Valyrakis
Dr. Panagiotis Michalis
Dr. Thomas Pahtz
Prof. Dr. Oral Yagci
Guest Editors

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• bed and bank erosion
• bridge hydraulics
• confluences
• dam/embankment assessment
• experimental investigation
• field measurements
• flow–vegetation–sediment interactions
• fluvial hydraulics
• geo-hazards
• hydraulic structures
• hydrodynamics
• incipient motion
• monitoring systems
• morphodynamics
• numerical modeling
• reservoir sedimentation
• remote sensing
• scour
• scour control structures
• sediment transport
• spur dikes
• waterways