Landslides, Journal Year: 2022, Volume and Issue: 19(9), P. 2135 - 2148
Published: May 7, 2022
Language: Английский
Frontiers in Earth Science, Journal Year: 2020, Volume and Issue: 8
Published: Feb. 14, 2020
Plastic debris in water systems is a major challenge for our ecosystem, because it extremely persistent the environment. Apart from importance of reducing amount plastic entering ocean, clearing rivers important societal concerns, such as flood risks. waste accumulation at trash racks leads to rise upstream level and may increase urban risk. Until now, most studies riverine predominantly focused on organic accumulations. Based flume experiments, behavior mixed accumulations were studied. One key findings this study that causes faster blockage than debris, contains fewer voids therefore has higher density. In addition field measurements performed Cikapundung River (Indonesia). This river one tributaries Citarum River, which considered world's heavily polluted rivers. Combining results experiments demonstrated backwater 1 m/hour plausible blocked rack illustrating additional risk caused by pollution. Our emphasize need further quantifying (plastic) investigating its relation changes system behavior, including influence
Language: Английский
Citations
107
Environmental Science Processes & Impacts, Journal Year: 2021, Volume and Issue: 23(4), P. 535 - 552
Published: Jan. 1, 2021
The contextualization of macroplastics in a budget framework can help to improve our understanding the physical processes determining macroplastic behaviour and impacts rivers. Hence, better management practices be adopted.
Language: Английский
Citations
62
Geomorphology, Journal Year: 2024, Volume and Issue: 453, P. 109152 - 109152
Published: March 13, 2024
Language: Английский
Citations
7
Geomorphology, Journal Year: 2019, Volume and Issue: 346, P. 106851 - 106851
Published: Aug. 26, 2019
Language: Английский
Citations
45
Geophysical Research Letters, Journal Year: 2020, Volume and Issue: 47(17)
Published: Aug. 24, 2020
Abstract Wood reintroduction is now considered an important aspect of stream restoration, due to ecohydraulic benefits associated with wood presence. Channel‐spanning jams create upstream backwater, increasing flow heterogeneity, sediment deposition, and ecological productivity, but also flood risk. Backwater rise prediction necessary evaluate hazards in hydraulic models, improve design engineered logjam projects, compare jam effects across river systems. We present experimental results demonstrating that a can be modeled as porous obstruction generating momentum loss proportional the number, size, packing density logs length. Energy momentumconstraints are combined predict backwater from unit discharge dimensionless structural parameter. This novel approach allows description preexisting common metric. The model was used demonstrate how length, pool deposition depend on structure channel slope.
Language: Английский
Citations
41
Springer eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 495 - 538
Published: Jan. 1, 2024
Language: Английский
Citations
5
Wiley Interdisciplinary Reviews Water, Journal Year: 2019, Volume and Issue: 6(6)
Published: Oct. 23, 2019
Abstract The influence of naturally occurring in‐channel large wood (LW) on the hydraulics, hydrology and geomorphology rivers is well documented. To inform management better understand or artificially placed LW, hydraulic hydrological models are applied to predict possible benefits drawbacks for habitat, sediment flood risk mitigation. However, knowledge guidance appropriate representation in models, needed underpin realistic predictions, lacking. This could lead unrealistic expectations effectiveness LW different river goals. date, seven types have been applied, range partly reflecting variety model types, scales purposes. most common approach by altering channel roughness represent flow resistance. Although qualitatively effects captured using date quantitative validation, as transferable help a priori parameterization representations, remain limited. Therefore, additional empirical investigations robust validation required defensible representations specific purposes numerical coupled with accounting input uncertainty improve confidence predictions. Future studies should also consider greater artificial natural features, settings, larger spatial account temporal variability flow, morphology configuration. article categorized under: Water Life > Methods Science Nature Freshwater Ecosystems
Language: Английский
Citations
40
Geomorphology, Journal Year: 2020, Volume and Issue: 358, P. 107122 - 107122
Published: Feb. 26, 2020
Language: Английский
Citations
36
Water Resources Research, Journal Year: 2024, Volume and Issue: 60(3)
Published: March 1, 2024
Abstract Fallen trees enter the adjacent stream and are carried away downstream by current. As joins another one, complex hydrodynamics near their confluence make movement of wood hard to predict. These woods may accumulate resulting in backwater subsequent potential flooding. A laboratory study was conducted investigate accumulation behavior individual pieces confluence. The characteristics (i.e., length, diameter, density) hydraulic conditions discharge ratio release distance) were varied this investigation. It found that wooden released from tributary got occasionally trapped flow separation zone confluence, whereupon they mainly a clockwise vortex continued stay driven reverse cluster currents within zone. probability related its distance. effect diameter density tested parameters negligible. increased with an increase as well decrease longer had higher being trapped, whereas for those exceeding some critical value, nearly same, or dropped sharply. generalized model developed practical application. findings carry significant implications river management, particularly preventing risk flooding caused blockage.
Language: Английский
Citations
4
Journal of Hydraulic Engineering, Journal Year: 2024, Volume and Issue: 150(5)
Published: July 10, 2024
Language: Английский
Citations
4