3D MODELING COMPUTATION TO EVALUATE GROYNE STRUCTURE PERFORMANCE: CASE STUDY OF PASSO COASTAL AREA

BAREKENG JURNAL ILMU MATEMATIKA DAN TERAPAN, Journal Year: 2025, Volume and Issue: 19(1), P. 643 - 654

Published: Jan. 13, 2025

Groyne is very important to protect the coastline with concept of maintaining balance sediment transport. building in theory can work well if worked groups or more than one. In this study, Passo beach location was chosen because there an existing groyne that, seen on Google Earth, has been damaged by scattering constituent rocks. If cannot transport, it may occur that mass destruction infrastructure behind itself, such as regional roads, occur. To find out level damage, in-depth study needs be carried out. paper, Delft-3D mathematical modeling investigate damage looking at performance transport area. Hydrodynamic and coastal analyses were wet dry season conditions. Modeling over one month a morphology factor 12 obtain for year. conditions, shows observation point, erosion 2 meters, balanced. It implied structure must replaced being surpass lifetime.

Language: Английский

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Spatiotemporal Prediction of Tidal Fields in a Semi-Enclosed Marine Bay Using Deep Learning

Water, Journal Year: 2025, Volume and Issue: 17(3), P. 386 - 386

Published: Jan. 31, 2025

The prediction of tidal fields is crucial in coastal and marine hydrodynamic analyses, particularly complex environments, as it plays an essential role disaster warning fisheries management. However, monitoring the entire field impractical, harmonic analysis numerical simulation methods continue to face challenges accuracy efficiency for large-scale predictions. To address these issues, this paper proposes a method based on Long Short-Term Memory (LSTM) networks. A physics-based model established, validated using observational data from multiple sites study area. quantified performance indicators such root mean square error (RMSE) correlation coefficients. then used generate high-quality comprehensive dataset. An LSTM-based developed predict semi-closed bay. compared with models Transformer, Random Forest, KNN regression methods. results demonstrate that surpasses other machine learning accuracy, notable advantage handling time series data. This introduces new ideas technical approaches rapid prediction, overcoming limitations traditional providing robust support prevention, resource management, environmental protection.

Language: Английский

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Copula-based joint impact assessment of rainfall and tidal level on flood risk in tidal-influenced plain river network areas, Taihu Lake Basin

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132785 - 132785

Published: Feb. 1, 2025

Language: Английский

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Water and sediment exchange between the anthropogenically modified distributaries of the Yangtze Estuary

CATENA, Journal Year: 2025, Volume and Issue: 250, P. 108729 - 108729

Published: Feb. 5, 2025

Language: Английский

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Sediment particle sizes and river discharge implications on shoreline change along Anlo Beach, Ghana.

Regional Studies in Marine Science, Journal Year: 2025, Volume and Issue: unknown, P. 104095 - 104095

Published: Feb. 1, 2025

Language: Английский

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Morphology and vegetation dynamics in a macro-tidal tropical estuary with high fluvial discharge: A case study of the Salween River Delta

Journal of Geographical Sciences, Journal Year: 2025, Volume and Issue: 35(3), P. 577 - 597

Published: March 1, 2025

Language: Английский

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Understanding the significance of Coastal erosion pattern along Bengkalis Island due to climate change

IOP Conference Series Earth and Environmental Science, Journal Year: 2025, Volume and Issue: 1479(1), P. 012018 - 012018

Published: April 1, 2025

Abstract Bengkalis Island is located on the outer border of Indonesia and faces Malacca Strait. The northwest part island, which predominantly composed peat soil, was most severely affected by erosion. condition particularly frequent during periods high rainfall intensity due to climate change. This has caused landslide towards sea, triggered land instability use changes sediment transport in nearshore area. Understanding needed as a base design proper coastal protection. To address this phenomenon, we investigate model pattern along west coast low wave season using coupled flow Delft3D software. uses bathymetry data from BATNAS, waves wind ERA-5, TPXO global tides, properties secondary data. Model verification conducted tides recording Geospatial Information Agency (BIG) field survey Yamaguchi University Riau University. By examining two cases, it found that edge more prone erosion, whereas southern side island likely experience sedimentation, even if erosion also happens there low-wave season. Furthermore, hydrodynamic conditions waters surrounding it, contribute landslides are considered selecting suitable Nature-based Solution (NbS) for

Language: Английский

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Multi-Decadal Dynamics of the Changjiang Estuarine Tidal Flat Resource: Causes and Threats

Published: Jan. 1, 2025

Language: Английский

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Impact of paleo-rainfall events in the South Atlantic Convergence Zone (SACZ) and human pressures since ~ 1950 in southeastern Brazil: Paraty and Saco de Mamanguá

Environmental Earth Sciences, Journal Year: 2025, Volume and Issue: 84(11)

Published: May 1, 2025

Language: Английский

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The influence of river discharge on energy transport in estuaries and its implication for the equilibrium bed profile

Engineering Applications of Computational Fluid Mechanics, Journal Year: 2024, Volume and Issue: 18(1)

Published: March 12, 2024

In this paper, we revisit the classical energy transport equation for pure tidal flows in estuaries by including effects of residual water level and freshwater discharge. Starting from one-dimensional mass momentum conservations, derive analytical expressions flux its dissipation, which can be used to explore interaction between tide river an perspective. It has been shown that potential is dominant over kinetic flux, contribution made tide-river negligible compared with due flow A critical position corresponding zero identified, reflecting a balance along-channel amplitude level. Assuming variation system tends zero, long-term equilibrium bed profile convex-up shape, where identify location second estuarine turbidity maximum (ETM) at determined river- tide-induced flux. The dynamic response propagation extent are adjust reflect seasonal changes towards formation equilibrium.

Language: Английский

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