Articles | Volume 21, issue 1
https://doi.org/10.5194/os-21-473-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-21-473-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
13 Feb 2025
Research article |
| 13 Feb 2025
| 13 Feb 2025
Application of wave–current coupled sediment transport models with variable grain properties for coastal morphodynamics: a case study of the Changhua River, Hainan
College of Marine Science and Technology, China University of Geosciences, Wuhan 430074, China
Enjin Zhao
CORRESPONDING AUTHOR
College of Marine Science and Technology, China University of Geosciences, Wuhan 430074, China
Shenzhen Research Institute, China University of Geosciences, Shenzhen 518057, China
Institute for Advanced Marine Research, China University of Geosciences, Guangzhou 511462, China
Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China
Xiwen Li
Haikou Marine Geological Survey Center, China Geological Survey, Haikou 571127, China
Shiyou Zhang
Haikou Marine Geological Survey Center, China Geological Survey, Haikou 571127, China
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Si Wang, Lin Mu, Zhenfeng Yao, Jia Gao, Enjin Zhao, and Lizhe Wang
Nat. Hazards Earth Syst. Sci., 21, 439–462, https://doi.org/10.5194/nhess-21-439-2021, https://doi.org/10.5194/nhess-21-439-2021, 2021
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The study provides a comprehensive assessment and zonation of hazard, vulnerability, and risk of storm surge caused by the designed typhoon scenarios in the coastal area of Huizhou. The risk maps can help decision-makers to develop evacuation strategies to minimize civilian casualties. The risk analysis can be utilized to identify risk regions to reduce economic losses. The proposed methodology and procedure can be applied to any coastal city in China for making risk assessments.
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Approach: Numerical Models | Properties and processes: Coastal and near-shore processes
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A three-quantile bias correction with spatial transfer for the correction of simulated European river runoff to force ocean models
River discharge impacts coastal Southeastern Tropical Atlantic sea surface temperature and circulation: a model-based analysis
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Mechanisms and intraseasonal variability in the South Vietnam Upwelling, South China Sea: the role of circulation, tides, and rivers
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Exploring water accumulation dynamics in the Pearl River estuary from a Lagrangian perspective
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Fjord circulation permits a persistent subsurface water mass in a long, deep mid-latitude inlet
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Bouke Biemond, Wouter M. Kranenburg, Ymkje Huismans, Huib E. de Swart, and Henk A. Dijkstra
Ocean Sci., 21, 261–281, https://doi.org/10.5194/os-21-261-2025, https://doi.org/10.5194/os-21-261-2025, 2025
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We study salinity in estuaries consisting of a network of channels. To this end, we develop a model that computes the flow and salinity in such systems. We use the model to quantify the mechanisms by which salt is transported into estuarine networks, the response to changes in river discharge, and the impact of depth changes. Results show that when changing the depth of channels, the effects on salt intrusion into other channels in the network can be larger than the effect on the channel itself.
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Ocean Sci., 20, 1547–1566, https://doi.org/10.5194/os-20-1547-2024, https://doi.org/10.5194/os-20-1547-2024, 2024
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We focus on understanding the impact of river runoff and precipitation on sea surface salinity (SSS) in the eastern North Tropical Atlantic (e-NTA) region off northwestern Africa. By analyzing regional simulations and observational data, we find that river flows significantly influence SSS variability, particularly after the rainy season. Our findings underscore that a main source of uncertainty representing SSS variability in this region is from river runoff estimates.
Stefan Hagemann, Thao Thi Nguyen, and Ha Thi Minh Ho-Hagemann
Ocean Sci., 20, 1457–1478, https://doi.org/10.5194/os-20-1457-2024, https://doi.org/10.5194/os-20-1457-2024, 2024
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We have developed a methodology for the bias correction of simulated river runoff to force ocean models in which low, medium, and high discharges are corrected once separated at the coast. We show that the bias correction generally leads to an improved representation of river runoff in Europe. The methodology is suitable for model regions with a sufficiently high coverage of discharge observations, and it can be applied to river runoff based on climate hindcasts or climate change simulations.
Léo C. Aroucha, Joke F. Lübbecke, Peter Brandt, Franziska U. Schwarzkopf, and Arne Biastoch
EGUsphere, https://doi.org/10.5194/egusphere-2024-3320, https://doi.org/10.5194/egusphere-2024-3320, 2024
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The West African coastal region sustains highly productive fisheries and marine ecosystems influenced by sea surface temperature. We use oceanic models to show that the freshwater input from land to ocean strengthens a surface northward (southward) coastal current north (south) of the Congo river mouth, promoting a transfer of cooler (warmer) waters to north (south) of the Congo discharge location. We highlight the significant impact of river discharge on ocean temperatures and circulation.
Kunal Madkaiker, Ambarukhana D. Rao, and Sudheer Joseph
Ocean Sci., 20, 1167–1185, https://doi.org/10.5194/os-20-1167-2024, https://doi.org/10.5194/os-20-1167-2024, 2024
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Using a high-resolution model, we estimated the volume, freshwater, and heat transports along Indian coasts. Affected by coastal currents, transport along the eastern coast is highly seasonal, and the western coast is impacted by intraseasonal oscillations. Coastal currents and equatorial forcing determine the relation between NHT and net heat flux in dissipating heat in coastal waters. The north Indian Ocean functions as a heat source or sink based on seasonal flow of meridional heat transport.
Tarmo Soomere, Mikolaj Zbiegniew Jankowski, Maris Eelsalu, Kevin Ellis Parnell, and Maija Viška
EGUsphere, https://doi.org/10.5194/egusphere-2024-2640, https://doi.org/10.5194/egusphere-2024-2640, 2024
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Marine Herrmann, Thai To Duy, and Patrick Marsaleix
Ocean Sci., 20, 1013–1033, https://doi.org/10.5194/os-20-1013-2024, https://doi.org/10.5194/os-20-1013-2024, 2024
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In summer, deep, cold waters rise to the surface along and off the Vietnamese coast. This upwelling of water lifts nutrients, inducing biological activity that is important for fishery resources. Strong tides occur on the shelf off the Mekong Delta. By increasing the mixing of ocean waters and modifying currents, they are a major factor in the development of upwelling on the shelf, accounting for ~75 % of its average summer intensity.
Sara Sirviente, Juan Jesús Gomiz-Pascual, Marina Bolado-Penagos, Sabine Sauvage, José Miguel Sánchez-Pérez, and Miguel Bruno
EGUsphere, https://doi.org/10.5194/egusphere-2024-2451, https://doi.org/10.5194/egusphere-2024-2451, 2024
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Pedro Figueroa, Gonzalo Saldías, and Susan Allen
EGUsphere, https://doi.org/10.5194/egusphere-2024-2386, https://doi.org/10.5194/egusphere-2024-2386, 2024
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Mingyu Li, Alessandro Stocchino, Zhongya Cai, and Tingting Zu
Ocean Sci., 20, 931–944, https://doi.org/10.5194/os-20-931-2024, https://doi.org/10.5194/os-20-931-2024, 2024
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Robert Lepper, Leon Jänicke, Ingo Hache, Christian Jordan, and Frank Kösters
Ocean Sci., 20, 711–723, https://doi.org/10.5194/os-20-711-2024, https://doi.org/10.5194/os-20-711-2024, 2024
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Johannes Lawen
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Fangjing Deng, Feiyu Jia, Rui Shi, Shuwen Zhang, Qiang Lian, Xiaolong Zong, and Zhaoyun Chen
Ocean Sci., 20, 499–519, https://doi.org/10.5194/os-20-499-2024, https://doi.org/10.5194/os-20-499-2024, 2024
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Southwesterly winds impact cross-estuary flows by amplifying the eddy viscosity component during smaller tides. Moreover, they modify along-estuary gravitational circulation by diminishing both the barotropic and baroclinic components. Stratification results in contrasting sheared flows, distinguished by different dominant components compared to destratified conditions. Additionally, the eddy viscosity component is governed by various subcomponents in diverse stratified waters.
Laura Bianucci, Jennifer M. Jackson, Susan E. Allen, Maxim V. Krassovski, Ian J. W. Giesbrecht, and Wendy C. Callendar
Ocean Sci., 20, 293–306, https://doi.org/10.5194/os-20-293-2024, https://doi.org/10.5194/os-20-293-2024, 2024
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While the deeper waters in the coastal ocean show signs of climate-change-induced warming and deoxygenation, some fjords can keep cool and oxygenated waters in the subsurface. We use a model to investigate how these subsurface waters created during winter can linger all summer in Bute Inlet, Canada. We found two main mechanisms that make this fjord retentive: the typical slow subsurface circulation in such a deep, long fjord and the further speed reduction when the cold waters are present.
Zhongyuan Lin, Guang Zhang, Huazhi Zou, and Wenping Gong
Ocean Sci., 20, 181–199, https://doi.org/10.5194/os-20-181-2024, https://doi.org/10.5194/os-20-181-2024, 2024
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From 2021 to 2022, a particular sub-estuary (East River estuary) suffered greatly from an enhanced salt intrusion. We conducted observation analysis, numerical simulations, and analytical solution to unravel the underlying mechanisms. This study is of help in the investigation of salt dynamics in sub-estuaries connected to main estuaries and of implications for mitigating salt intrusion problems in the regions.
Elina Miettunen, Laura Tuomi, Antti Westerlund, Hedi Kanarik, and Kai Myrberg
Ocean Sci., 20, 69–83, https://doi.org/10.5194/os-20-69-2024, https://doi.org/10.5194/os-20-69-2024, 2024
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We studied circulation and transports in the Archipelago Sea (in the Baltic Sea) with a high-resolution hydrodynamic model. Transport dynamics show different variabilities in the north and south, so no single transect can represent transport through the whole area in all cases. The net transport in the surface layer is southward and follows the alignment of the deeper channels. In the lower layer, the net transport is southward in the northern part of the area and northward in the southern part.
Julio Salcedo-Castro, Antonio Olita, Freddy Saavedra, Gonzalo S. Saldías, Raúl C. Cruz-Gómez, and Cristian D. De la Torre Martínez
Ocean Sci., 19, 1687–1703, https://doi.org/10.5194/os-19-1687-2023, https://doi.org/10.5194/os-19-1687-2023, 2023
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Considering the relevance and impact of river discharges on the coastal environment, it is necessary to understand the processes associated with river plume dynamics in different regions and at different scales. Modeling studies focused on the eastern Pacific coast under the influence of the Humboldt Current are scarce. Here, we conduct for the first time an interannual modeling study of two river plumes off central Chile and discuss their characteristics.
Qiyan Ji, Lei Han, Lifang Jiang, Yuting Zhang, Minghong Xie, and Yu Liu
Ocean Sci., 19, 1561–1578, https://doi.org/10.5194/os-19-1561-2023, https://doi.org/10.5194/os-19-1561-2023, 2023
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Accurate wave forecasts are essential to marine engineering safety. The research designs a model with combined signal decomposition and multiple neural network algorithms to predict wave parameters. The hybrid wave prediction model has good robustness and generalization ability. The contribution of the various algorithms to the model prediction skill was analyzed by the ablation experiments. This work provides a neoteric view of marine element forecasting based on artificial intelligence.
Cited articles
Addison-Atkinson, W., Chen, A. S., Memon, F. A., Anta, J., Naves, J., and Cea, L.: Investigation of uniform and graded sediment wash-off in an urban drainage system: Numerical model validation from a rainfall simulator in an experimental facility, J. Hydrol., 629, 130561, https://doi.org/10.1016/j.jhydrol.2023.130561, 2024.
Adnan, R. M., Liang, Z. M., El-Shafie, A., Zounemat-Kermani, M., and Kisi, O.: Prediction of Suspended Sediment Load Using Data-Driven Models, Water, 11, 2060, https://doi.org/10.3390/w11102060, 2019.
Auguste, C., Nader, J. R., Marsh, P., Cossu, R., and Penesis, I.: Variability of sediment processes around a tidal farm in a theoretical channel, Renew. Energ., 171, 606–620, https://doi.org/10.1016/j.renene.2021.02.147, 2021.
Bai, J., Fang, H. W., He, G. J., Xie, C. B., and Gao, H.: Numerical simulation of erosion and transport of fine sediments by large eddy simulation, Chinese J. Theor. Appl. Mech., 49, 65–74, https://doi.org/10.6052/0459-1879-16-235, 2017.
Bakhtyar, R., Barry, D. A., Li, L., and Jeng, D. S.: Yeganeh-Bakhtiary, A.: Modeling sediment transport in the swash zone: A review, Ocean Eng., 36, 767–783, https://doi.org/10.1016/j.oceaneng.2009.03.003, 2009.
Battjes, J. A. and Janssen, J. P. F. M.: Energy loss and set-up due to breaking in random waves, Proc. 16th Coastal Eng. Conf., Hamburg, Part 1, 569–587, https://doi.org/10.1061/9780872621909.034, 1978.
Blumberg, A. F. and Mellor, G. L.: A description of a three-dimensional coastal ocean circulation model, Coast. Estuar. Sci., 4, 1–16, https://doi.org/10.1029/CO004p0001, 1987.
Bui, L. H. N. and Bui, L. T.: Modelling bank erosion dependence on natural and anthropogenic factors – case study of Ganh Hao estuary, Bac Lieu – Ca Mau, Vietnam, Environ. Technol. Innov., 19, 100975, https://doi.org/10.1016/j.eti.2020.100975, 2020.
Chen, C., Liu, H., and Beardsley, R. C.: An unstructured grid, finite-volume, three-dimensional, primitive equations ocean model: application to coastal ocean and estuaries, J. Atmos. Ocean. Technol., 20, 159–186, https://doi.org/10.1175/1520-0426(2003)020<0159:AUGFVT>2.0.CO;2, 2003.
Chen, C. S., Beardsley, R. C., and Cowles, G.: An unstructured grid, finite-volume coastal ocean model: FVCOM User Manual, Second Edition, Technical Report 06-0602, University of Massachusetts Dartmouth [code], New Bedford, MA, USA, http://fvcom.smast.umassd.edu (last access: 4 March 2022), 2006.
Chen, C., Xue, P., Ding, P., Beardsley, R. C., Xu, Q., Mao, X., Gao, G., Qi, J., Li, C., Lin, H., Cowles, G., and Shi, M.: Physical mechanisms for the offshore detachment of the Changjiang Diluted Water in the East China Sea, J. Geophys. Res.-Ocean., 113, C02002, https://doi.org/10.1029/2006JC003994, 2008.
Chen, T., Zhang, Q., Wu, Y., Ji, C., Yang, J., and Liu, G.: Development of a wave-current model through coupling of FVCOM and SWAN, Ocean Eng., 164, 443–454, https://doi.org/10.1016/j.oceaneng.2018.06.062, 2018.
Chen, W. Q., Werf, J. J., and Hulscher, S. J. M. H.: Practical modelling of sand transport and beach profile evolution in the swash zone, Coast. Eng., 191, 104514, https://doi.org/10.1016/j.coastaleng.2024.104514, 2024.
Claude, N., Rodrigues, S., Bustillo, V., Bréhéret, J. G., Macaire, J. J., and Jugé, P.: Estimating bedload transport in a large sand–gravel bed river from direct sampling, dune tracking and empirical formulas, Geomorphology, 179, 40–57, https://doi.org/10.1016/j.geomorph.2012.07.030, 2012.
Constant, M., Alary, C., Weiss, L., Constant, A., and Billon, G.: Trapped microplastics within vertical redeposited sediment: Experimental study simulating lake and channeled river systems during resuspension events, Environ. Pollut., 322, 121212, https://doi.org/10.1016/j.envpol.2023.121212, 2023.
Copernicus Climate Change Service (C3S): ERA5: Fifth generation of ECMWF atmospheric reanalyses of the global climate, Copernicus Climate Change Service Climate Data Store (CDS) [data set], https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=overview (last access: 26 March 2024), 2017.
Czitrom, V. A.: One-factor-at-a-time versus designed experiments, Am. Stat., 53, 126–131, https://doi.org/10.1080/00031305.1999.10474445, 1999.
Deltares: SWAN Cycle III Version 40.51 User Manual, Delft, the Netherlands, Deltares [code], https://swanmodel.sourceforge.io/online_5doc/swanuse/swanuse.html (last access: 24 June 2022), 2024.
Deltares: SWAN Cycle III Version 40.51 User Manual, Delft, the Netherlands, Deltares [code], https://swanmodel.sourceforge.io/online_doc/swanuse/swanuse.html (last access: 21 June 2017), 2024.
Ding, Q. L.: Wave characteristics and calculation of Beibu Gulf, Marine Forecasts, 7, 46–52, https://doi.org/10.11737/j.issn.1003-0239.1990.02.007, 1990.
Doroudi, S. and Sharafati, A.: A newly developed multi-objective evolutionary paradigm for predicting suspended sediment load, J. Hydrol., 634, 131090, https://doi.org/10.1016/j.jhydrol.2024.131090, 2024.
Fang, X., Zou, J., Wu, Y., Zhang, Y., Zhao, Y., and Zhang, H.: Evaluation of the sustainable development of an island “Blue Economy”: a case study of Hainan, China, Sustain. Cities Soc., 66, 102662, https://doi.org/10.1016/j.scs.2020.102662, 2021.
Feng, H. L., Liu, M., Xu, M. Y., Zhang, M. X., Mo, L., Chen, T., Tan, X. Y., and Liu, Z. Y.: Study on the integrated protection strategy of water environment protection: The case of Hainan Province of China, Environ. Technol. Innov., 24, 101990, https://doi.org/10.1016/j.eti.2021.101990, 2021.
Folk, R. L. and Ward, W. C.: A Study in the Significance of Grain-Size Parameters, J. Sediment. Petrol., 27, 3–26, https://doi.org/10.1306/74D70646-2B21-11D7-8648000102C1865D, 1957.
Fredsoe, J.: The turbulent boundary layer in combined wave-current motion, J. Hydraul. Eng., 110, 1103–1120, https://doi.org/10.1061/(ASCE)0733-9429(1984)110:8(1103), 1984.
Gao, J.: Study on sediment transport model in Changhua River Estuary of Hainan Province based on remote sensing analysis, China University of Geosciences (Beijing), CNKI, CDMD: 2.1014.101980080086, 2014.
Gessler, D., Hall, B., Spasojevic, M., Holly, F. M., Pourtaheri, H., and Raphelt, N. X.: Application of 3D mobile bed, hydrodynamics model, J. Hydraul. Eng., 125, 737–749, https://doi.org/10.1061/(ASCE)0733-9429(1999)125:7(737), 1999.
Han, X. J., Kuang, C. P., Gong, L. X., and Li, W. B.: Sediment transport and seabed evolution under artificial headland and beach nourishment engineering, Oceanol. Limnol. Sin., 53, 917–932, https://doi.org/10.11693/hyhz20211200345, 2022.
Holly, F. M. and Rahuel, J. L.: New numerical/physical framework for mobile-bed modeling, Part 1: Numerical and physical principles, J. Hydraul. Res., 28, 401–416, https://doi.org/10.1080/00221689009499057, 1990.
Hu, X. Z.: Mathematical Simulation Study of Sediment in Intake and Outfall of Dongfang (East) Power Plant in Hainan at North Bay, Pearl River, 030, 18–23, https://doi.org/10.3969/j.ISSN.1001-9235.2009.06.006, 2009.
Huang, H., Chen, C., Blanton, J. O., and Andrade, F. A.: A numerical study of tidal asymmetry in Okatee Creek, South Carolina, Estuar. Coast. Shelf Sci., 78, 190–202, https://doi.org/10.1016/j.ecss.2007.11.027, 2008.
Ji, C., Zhang, Q., Ma, D., Wu, Y., and Jiang, Q.: Nearshore coupled wave-current model based on new three-dimensional radiation stress formulation, J. Zhejiang Univ., 56, 128–136, https://doi.org/10.3785/j.issn.1008-973X.2022.01.014, 2022.
Jia, Y. and Wang, S. S.: Numerical model for channel flow and morphological change studies, J. Hydraul. Eng., 125, 924–933, https://doi.org/10.1061/(ASCE)0733-9429(1999)125:9(924), 1999.
Jiang, F. Y. and Zhao, E. J.: Damage mechanism and failure risk analysis of offshore pipelines subjected to impact loads from falling object, considering the soil variability, Mar. Struct., 93, 103544, https://doi.org/10.1016/j.marstruc.2023.103544, 2024.
Jiang, L. and Xia, M.: Dynamics of the Chesapeake Bay outflow plume: Realistic plume simulation and its seasonal and interannual variability, J. Geophys. Res.-Ocean., 121, 1424–1445, https://doi.org/10.1002/2015JC011191, 2016.
Jin, J., Ou-Yang, Z. Y., Lin, S. K., and Wang, X. K.: A study on ecosystem deterioration and protection counter-measure of Hainan Island coast, Ocean Dev. Manag., 2008, 103–108, https://doi.org/10.3969/j.issn.1005-9857.2008.01.023, 2008.
Lai, W., Pan, J., and Devlin, A. T.: Impact of tides and winds on estuarine circulation in the Pearl River Estuary, Cont. Shelf Res., 168, 68–82, https://doi.org/10.1016/j.csr.2018.09.004, 2018.
Leary, K. C. P. and Buscombe, D.: Estimating sand bed load in rivers by tracking dunes: a comparison of methods based on bed elevation time series, Earth Surf. Dynam., 8, 161–172, https://doi.org/10.5194/ESURF-8-161-2020, 2020.
Lee, H. Y., Hsieh, H. M., Yang, J. C., and Yang, C. T.: Quasi–two-dimensional simulation of scour and deposition in alluvial channels, J. Hydraul. Eng., 123, 600–609, https://doi.org/10.1061/(ASCE)0733-9429(1997)123:7(600), 1997.
Li, C. and O'Donnell, J.: Tidally driven residual circulation in shallow estuaries with lateral depth variation, J. Geophys. Res., 102, 27915–27929, https://doi.org/10.1029/97JC02330, 1997.
Liu, J. and Bai, Y. C.: The interactions between wave and cohesive sediment, Mech. Eng., 36, 253–260, https://doi.org/10.6052/1000-0879-13-204, 2014.
Longuet-Higgins, M. S.: On the transport of mass by time-varying ocean currents, Deep-Sea Res. Oceanogr. Abstr., 16, 431–447, https://doi.org/10.1016/0011-7471(69)90031-X, 1969.
Maddock, L. and Pingree, R. D.: Numerical simulation of the Portland tidal eddies, Estuar. Coast. Mar. Sci., 6, 353–363, https://doi.org/10.1016/0302-3524(78)90127-5, 1978.
Mao, L. M., Zhang, Y. L., and Bi, H.: Modern pollen deposits in coastal mangrove swamps from northern Hainan Island, China, J. Coast. Res., 22, 1423–1436, https://doi.org/10.2112/05-0516.1, 2006.
Michel, G., Le Bot, S., Deloffre, J., Legrain, M., Levaillant, R., Simon, M., Tessier, B., and Lesourd, S.: In-situ characterisation of fluvial dune morphology and dynamics under limited sediment supply conditions, Seine River, France, Geomorphology, 439, 108855, https://doi.org/10.1016/j.geomorph.2023.108855, 2023.
Nash, J. E. and Sutcliffe, J. V.: River flow forecasting through conceptual models part I – A discussion of principles, J. Hydrol., 10, 282–290, https://doi.org/10.1016/0022-1694(70)90255-6, 1970.
Niu, J., Xie, J., Lin, S., Lin, P., Gao, F., Zhang, J., and Cai, S.: Importance of bed liquefaction-induced erosion during the winter wind storm in the Yellow River Delta, China, J. Geophys. Res.-Ocean., 128, e2022JC019256, https://doi.org/10.1029/2022JC019256, 2023.
NOAA National Geophysical Data Center: ETOPO1 1 Arc-Minute Global Relief Model, NOAA National Centers for Environmental Information [data set], https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ngdc.mgg.dem:316 (last access: June 2022), 2009.
Papanicolaou, A., Bdour, A., and Wicklein, E.: One-dimensional hydrodynamic/sediment transport model applicable to steep mountain streams, J. Hydraul. Res., 42, 357–375, https://doi.org/10.1080/00221686.2004.9728402, 2004.
Papanicolaou, A., Krallis, M., and Edinger, S.: Sediment transport modeling review – Current and future developments, Adv. Mech., 40, 323–339, https://doi.org/10.6052/1000-0992-2010-3-J2009-110, 2010.
Pingree, R. D. and Maddock, L.: Tidal residuals in the English Channel, J. Mar. Biol. Assoc. UK, 57, 339–354, https://doi.org/10.1017/S0025315400021792, 1977.
Robinson, I. S.: Chapter 7 Tidally Induced Residual Flows, Elsevier, Oceanography, 35, 321–356, https://doi.org/10.1016/S0422-9894(08)70505-1, 1983.
Salleh, S. H., Ahmad, A., Wan-Mohtar, W. H. M., Lim, C. H., and Abdul-Maulud, K. N.: Effect of projected sea level rise on the hydrodynamic and suspended sediment concentration profile of tropical estuary, Reg. Stud. Mar. Sci., 24, 225–236, https://doi.org/10.1016/j.rsma.2018.08.004, 2018.
Smith, P. C.: The Mean and Seasonal Circulation off Southwest Nova Scotia, J. Phys. Oceanogr., 13, 1034–1054, https://doi.org/10.1175/1520-0485(1983)013<1034:TMASCO>2.0.CO;2, 1983.
Spasojevic, M. and Holly, F. M.: 2-D bed evolution in natural watercourses – new simulation approach, J. Waterway Div.-ASCE, 116, 425–443, https://doi.org/10.1061/(ASCE)0733-950X(1990)116:4(425), 1990.
Sun, Q. L., Wang, Q., Shi, F. Y., Alves, T., Gao, S., Xie, X. N., Wu, S. G., and Li, J. B.: Runup of landslide-generated tsunamis controlled by paleogeography and sea-level change, Commun. Earth Environ., 3, 244, https://doi.org/10.1038/s43247-022-00572-w, 2022.
Terêncio, D. P. S., Pacheco, F. A .L., Valle-Junior, R. F., Melo-Silva, M. M. A. P., Pissarra, T. C. T., Melo, M. C., Valera, C. A., and Fernandes, L. F. S.: The Igarapé Weir decelerated transport of contaminated sediment in the Paraopeba River after the failure of the B1 tailings dam (Brumadinho), Int. J. Sediment Res., 38, 673–697, https://doi.org/10.1016/j.ijsrc.2023.06.004, 2023.
Thomas, W. A. and Prashum, A. I.: Mathematical model of scour and deposition, J. Hydr. Div., 103, 851–863, https://doi.org/10.1061/JYCEAJ.0004805, 1977.
Udden, J. A.: Mechanical composition of clastic sediments, GSA Bull., 25, 655–744, https://doi.org/10.1130/GSAB-25-655, 1914.
Uncles, R. J. and Jordan, M. B.: A one-dimensional representation ofresidual currents in the Severn Estuary and associated observations, Estuar. Coast. Mar. Sci., 10, 39–60, https://doi.org/10.1016/S0302-3524(80)80048-X, 1980.
Van-Rijn, L. C.: Sediment Transport, Part I : Bed load transport, J. Hydraul. Eng., 110, 1431–1455, https://doi.org/10.1061/(ASCE)0733-9429(1984)110:10(1431), 1984.
Vinzon, S. B., Gallo, M. N., Gabioux, M., Fonseca, D. L., Achete, F. M., Ghisolfi, R. D., Mill, G. N., Fonseca, S. A. R., Silva-Quaresma, V., Oliveira, K. S. S., Brigagão, G., and Machado, L. G.: The role of waves in the resuspension and transport of fine sediment and mine tailings from the Fundão Dam failure, Doce River, Brazil, Int. J. Sediment Res., 39, 44–60, https://doi.org/10.1016/j.ijsrc.2023.09.004, 2023.
Wang, D., Pei, L., Zhang, L., Li, X., Chen, Z., and Zhou, Y.: Water resource utilization characteristics and driving factors in the Hainan Island, J. Groundw. Sci. Eng., 11, 191–206, https://doi.org/10.26599/JGSE.2023.9280017, 2023.
Wang, X. H.: Analysis of wave characteristics in the offshore area of Dongfang City, Mar. Sci., 47, 31–46, https://doi.org/10.11759/hykx20220919001, 2023.
Wang, X. M., Qu, H. B., Xiong, Y. K., Lu, L., and Hu, K.: Grain-size characteristics and transport trend of bottom sediments at the estuary of Changhua River in Hainan, Geoscience, 36, 88–95, 2022.
Wu, J. Q., Xiao, M., Yang, J. T., Xiao, X. B., and Tang, W. H.: Study on distribution characteristics of soil erosion in the lower reaches of Changhua River in Hainan, Technol. Soil Water Conserv., 3, 12–15, https://doi.org/10.3969/j.issn.1673-5366.2012.03.04, 2012.
Wentworth, C. K.: A scale of grade and class terms for clastic sediments, J. Geol., 30, 377–392, https://doi.org/10.1086/622910, 1922.
Wu, W., Rodi, W., and Wenka, T.: 3D numerical modeling of flow and sediment transport in open channels, J. Hydraul. Eng., 126, 4–15, 2000.
Yang, Z. H., Jia, J. J., Wang, X. K., and Gao, J. H.: Characteristics and variations of water and sediment fluxes into the sea of the top three rivers of Hainan in recent 50 years, Mar. Sci. Bull., 32, 92–99, https://doi.org/10.11840/j.issn.1001-6392.2013.01.014, 2013.
Zeng, Z. X. and Zeng, X. Z.: Physicogeography of Hainan Island, Science Press, Beijing, ISBN: 7030008758, 1989.
Zhang, L. M., Wei, Z. Y., Cao, Q. M., Sang, A. Y., Wang, H., and Qi, Z. P.: Characteristics and influencing factors of sediment concentration in the lower reaches of three major rivers in Hainan Province in recent 40 years, Ecol. Environ. Sci., 15, 765–769, https://doi.org/10.3969/j.issn.1674-5906.2006.04.022, 2006.
Zhang, P., Ruan, H. M., Dai, P. D., Zhao, L. R., and Zhang, J. B.: Spatiotemporal river flux and composition of nutrients affecting adjacent coastal water quality in Hainan Island, J. Hydrol., 591, 125293, https://doi.org/10.1016/j.jhydrol.2020.125293, 2020.
Zhao, E. J., Qu, K., and Mu, L.: Numerical study of morphological response of the sandy bed after tsunami-like wave overtopping an impermeable seawall, Ocean. Eng., 186, 106076, https://doi.org/10.1016/j.oceaneng.2019.05.058, 2019.
Zhao, E. J., Sun, J. K., Tang, Y. Z., Mu, L., and Jiang, H. Y.: Numerical investigation of tsunami wave impacts on different coastal bridge decks using immersed boundary method, Ocean. Eng., 201, 107132, https://doi.org/10.1016/j.oceaneng.2020.107132, 2020.
Zhao, E. J., Dong, Y. K., Tang, Y. Z., and Sun, J. K.: Numerical investigation of hydrodynamic characteristics and local scour mecha-nism around submarine pipelines under joint effect of solitary waves and currents, Ocean. Eng., 222, 108553, https://doi.org/10.1016/j.oceaneng.2020.108553, 2021.
Zhao, E. J., Wu, Y. X., Jiang, F. Y., Wang, Y., Zhang, Z. Y., and Nie, C. H.: Numerical investigation on the influence of the complete tsunami-like wave on the tandem pipeline, Ocean. Eng., 294, 116697, https://doi.org/10.1016/j.oceaneng.2024.116697, 2024.
Zhao, L., Cai, G. Q., Zhong, H. X., Li, B., Zou, L. Q., Li, S., and Han, Y. F.: Grain-size characteristics and sedimentary environment of surface sediments in the shallow sea in the southeast of Hainan Island, Mar. Geol. Quat. Geol., 41, 64–74, 2021.
Zhu, L. R., Liu, Y. H., and Ye, C. Q.: Runoff change and influencing factors of Changhua River in arid area of Hainan Island, Ecol. Sci., 39, 183–189, 2020.
Zimmerman, J.: Dynamics, diffusion and geomorphological significance of tidal residual eddies, Nature, 290, 549–555, https://doi.org/10.1038/290549a0, 1981.
Short summary
A comprehensive sand transfer model is proposed to study sediment dynamics in the lower reaches of the Changhua River on the island of Hainan. It captures the complex relationship between wave action, ocean currents, and sediment transport. Validated on the basis of on-site measurements, the model reveals significant sediment deposits which are significantly affected by coastal ocean currents and geological structures.
A comprehensive sand transfer model is proposed to study sediment dynamics in the lower reaches...
