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Coastal Management and Nearshore Hydrodynamics, 2nd Edition
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Coastal Management and Nearshore Hydrodynamics, 2nd Edition

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Oceans and Coastal Zones".

Deadline for manuscript submissions: 20 September 2025 | Viewed by 850

Special Issue Editors

Prof. Dr. Peng Hu

E-Mail Website
Guest Editor
Ocean College, Zhejiang University, Zhoushan, China
Interests: numerical simulation theory; technique and application of coupled dynamics between water mass transport and geogenesis
Special Issues, Collections and Topics in MDPI journals
Dr. Weijie Liu

E-Mail Website
Guest Editor
Ocean College, Zhejiang University, Zhoushan, China
Interests: Bragg resonance of water waves; coastal engineering; hydraulic engineering; wave hydrodynamics; boussinesq wave model; fringing reefs; infra-gravity waves; wave runup
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Coastal management focuses on the preservation and sustainable use of coastal resources, addressing the challenges posed by natural processes, human activities, and climate change. It involves a multidisciplinary approach that combines scientific knowledge, policy making, and stakeholder engagement. On the other hand, nearshore hydrodynamics is concerned with the study of water movement and its interactions with the nearshore zone, which extends from the shoreline to the offshore region. In the context of global climate change, significant changes in nearshore hydrodynamic processes may occur and impact coastal ecosystems and human activities. A comprehensive understanding of nearshore hydrodynamics is essential for the development of sustainable coastal management plans.

Therefore, this Special Issue, entitled ‘Coastal Management and Nearshore Hydrodynamics, 2nd Edition’, offers a comprehensive exploration of the interplay between coastal management and nearshore hydrodynamics by addressing key themes such as climate change, coastal hazards, infrastructure management, and policy making. The findings and recommendations presented in this Special Issue will contribute to the ongoing efforts to protect and preserve coastal areas worldwide, ensuring their long-term viability in the face of dynamic environmental challenges.

Prof. Dr. Peng Hu
Dr. Weijie Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • coastal management
  • nearshore hydrodynamics
  • climate change
  • coastal hazards
  • waves and current
  • policy and planning

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Published Papers (4 papers)

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Research

20 pages, 6459 KiB  
Article
Assessing the Retreat of a Sandy Shoreline Backed by Coastal Aquaculture Ponds: A Case Study of Two Beaches in Guangdong Province, China
by Zhubin Cao, Yuan Li, Weiqiu Chen, Shanhang Chi and Chi Zhang
Water 2025, 17(11), 1583; https://doi.org/10.3390/w17111583 - 23 May 2025
Abstract
China has the world’s largest area of coastal aquaculture ponds, accounting for 39% of the total coastal aquaculture pond area worldwide. The rapid development of coastal aquaculture can significantly reduce global food shortages and support the development of marine economies on the Chinese [...] Read more.
China has the world’s largest area of coastal aquaculture ponds, accounting for 39% of the total coastal aquaculture pond area worldwide. The rapid development of coastal aquaculture can significantly reduce global food shortages and support the development of marine economies on the Chinese mainland. However, coastal aquaculture ponds have been recognized as a beach hazard because they require pipes to be laid on the surface of the beach to discharge wastewater, polluting the beach and artificially dividing it into multiple segments. Based on a well-conceived remote sensing analysis, the erosion of beaches backed by densely distributed coastal aquaculture ponds was determined to be 10 m/y. A high-efficiency shoreline evolution model was verified using a satellite-derived shoreline dataset. For the present case, the Brier Skill Score (BSS) was calculated to be 0.55, indicating a moderate match between the modeled and satellite-derived shoreline datasets. The verified ShorelineS model was then used to predict the future evolution of a shoreline backed by densely distributed coastal aquacultural ponds. The retreat distance of the erosion hotspot was predicted to increase from 150 m in 2025 to 240 m in 2040. It is expected that the beach will lose the entirety of its dry part in the future. Potential strategies for beach protection include reasonable management and the ecological restoration and nourishment of the beach. Full article
(This article belongs to the Special Issue Coastal Management and Nearshore Hydrodynamics, 2nd Edition)
22 pages, 5308 KiB  
Article
Investigating the Compound Influence of Tidal and River Floodplain Discharge Under Storm Events in the Brisbane River Estuary, Australia
by Usman Khalil, Mariam Sajid, Muhammad Zain Bin Riaz, Umair Iqbal, Essam Jnead, Shu-Qing Yang and Muttucumaru Sivakumar
Water 2025, 17(10), 1554; https://doi.org/10.3390/w17101554 - 21 May 2025
Viewed by 20
Abstract
Effective flood management requires a comprehensive understanding of interactions between multiple flooding sources. This study investigates compound flooding in the Brisbane River Estuary (BRE), Australia, using the MIKE 21 hydrodynamic model to assess the combined effects of tidal and riverine processes on flood [...] Read more.
Effective flood management requires a comprehensive understanding of interactions between multiple flooding sources. This study investigates compound flooding in the Brisbane River Estuary (BRE), Australia, using the MIKE 21 hydrodynamic model to assess the combined effects of tidal and riverine processes on flood extent and water levels. Unlike conventional studies that evaluate these factors separately, this research quantifies the impact of boundary condition variations at the Moreton Bay entrance on flood modelling accuracy. The model was calibrated by adjusting Manning’s n, achieving a Nash–Sutcliffe efficiency (Ens) ranging from 0.84 to 0.95. Validation results show a 90% agreement between the simulated and observed 2011 flood extent. The findings highlight the critical role of tidal boundary conditions, as their exclusion led to a 0.62 m and 0.12 m reduction in flood levels at Jindalee and Brisbane City gauges, respectively. This study provides valuable insights for improving flood risk assessment, model accuracy, and decision-making in estuarine flood management. Full article
(This article belongs to the Special Issue Coastal Management and Nearshore Hydrodynamics, 2nd Edition)
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25 pages, 16503 KiB  
Article
A Numerical Study on the Effect of the Coriolis Force on the Sediment Exchange Between the Yangtze River Estuary and Hangzhou Bay
by Jia Tang, Peng Hu, Zixiong Zhao, Junyu Tao, Aofei Ji, Zihao Feng and Linwei Dai
Water 2025, 17(7), 1011; https://doi.org/10.3390/w17071011 - 29 Mar 2025
Viewed by 258
Abstract
A GPU-accelerated shallow water model with a local time-step (LTS) is employed in this work to examine how the Coriolis forces affect the tidal level difference and, consequently, the water–sediment exchange between Hangzhou Bay (HZB) and the Yangtze River Estuary. The model is [...] Read more.
A GPU-accelerated shallow water model with a local time-step (LTS) is employed in this work to examine how the Coriolis forces affect the tidal level difference and, consequently, the water–sediment exchange between Hangzhou Bay (HZB) and the Yangtze River Estuary. The model is applied to both idealized and realistic estuary configurations to analyze tidal level gradients between the two neighboring estuaries under different flow conditions and with and without the Coriolis force condition. The model’s accuracy in predicting tidal levels and currents was validated against field data. It is shown that the tidal level gradient is negative during flood tide, indicating a mass transfer trend from south to north, whereas the tidal level gradient is positive during ebb tide, indicating a north-to-south mass transfer. Considering sediment originates mainly from the riverine side, the sediment mass transfer may occur mainly during ebb tide, and the direction is from the Yangtze River to the HZB. This finding provides numerical evidence for previous recognition that sediment in HZB mainly comes from the Yangtze River Estuary. A comparison of the idealized and realistic estuary configurations further indicates that the contrasting bed topography enhances tidal level gradients. The findings show that by causing tidal phase changes and asymmetric tidal range modifications, the Coriolis force increases lateral water level gradients (up to 0.7 m) between the Yangtze Estuary and Hangzhou Bay. Idealized modeling further demonstrates that higher Coriolis coefficients promote sediment exchange and exacerbate water level fluctuations across estuaries. Without the Coriolis effect, the tide level distribution in adjacent estuaries is symmetrical. In the Northern and Southern Hemispheres, the tide level distribution in adjacent estuaries is the opposite. In addition, this study has shown that changes in river flow have a limited effect on water levels at stations farther from the estuary’s flow intake and therefore have a negligible effect on the water level gradient in adjacent estuaries farther away. However, topography differences have a significant effect on water level gradients in neighboring estuaries. These studies emphasize the significance of the Coriolis force in regulating sediment transport pathways in estuaries. Full article
(This article belongs to the Special Issue Coastal Management and Nearshore Hydrodynamics, 2nd Edition)
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15 pages, 4851 KiB  
Article
Experimental Study on Beach Restoration Under the Influence of Artificial Islands
by Longzai Ge, Yanan Xu, Gelin Kang and Songgui Chen
Water 2025, 17(7), 972; https://doi.org/10.3390/w17070972 - 26 Mar 2025
Viewed by 314
Abstract
The construction of artificial islands not only alleviates the shortage of coastal land resources but also brings new environmental problems. This study focuses on the fundamental changes in the hydrodynamic environment and sediment transport caused by the construction of artificial islands, leading to [...] Read more.
The construction of artificial islands not only alleviates the shortage of coastal land resources but also brings new environmental problems. This study focuses on the fundamental changes in the hydrodynamic environment and sediment transport caused by the construction of artificial islands, leading to imbalances in sediment distribution and beach erosion. This article takes the coast of Riyue Bay in Hainan Province, China, as an example and uses various methods such as field surveys and model experiments to explore the evolutionary mechanism of beach landforms under the influence of artificial islands. Based on this, an adaptive “cyclic maintenance” beach restoration plan is proposed. Reasonable distribution of beach sediment is achieved through experimental verification, effectively mitigating the coastal erosion caused by the construction of artificial islands. The expected goals were achieved after 2 years of implementation of the on-site restoration project. The results of this research not only solve practical engineering problems but also provide a good reference for the restoration of similar types of coastal beaches. Full article
(This article belongs to the Special Issue Coastal Management and Nearshore Hydrodynamics, 2nd Edition)
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