Effects of hydrodynamical regime on morphological evolution at Cua Dai estuary and coastlines of Quang Nam province
Keywords:Cua Dai, Quang Nam, MIKE, DELFT3D, accretion, erosion, estuary, bar formation
In recent years, accretion-erosion processes are frequently recorded in the estuary of Cua Dai, Quang Nam province. Most recently, however, sand bars are formed in the estuary not far from the place where the Inland Waterways Authority of Vietnam had previously dredged. The estuary continues to be accreted by sand. These have been drawing special attention of national and international scientists. While there is accretion at the estuary, eroded processes are strongly recorded along the coastlines of Quang Nam province. Therefore, it is necessary to carry out a study in the effects of the hydrodynamic regime on morphological changes in the Cua Dai estuary and coastlines of Quang Nam province. The goal of this paper is to fully interpret the causes, regimes of accretion and erosion processes over the study area. In this study, satellite images and hydrodynamic models of Delft3D and MIKE 11 are applied. The results show a strong accretion process in the estuary of Cua Dai. Sandbar formation across the Cua Dai estuary comes from the interaction of flood, wave, and current conditions during the northeast monsoon. This mainly affects the changes in morphology in the estuary of Cua Dai, Quang Nam.
Asplund E., Malmström H., 2018. Coastal erosion in the region of Thu Bon River mouth, Vietnam. Master’s thesis, Lund University, Sweden, ISSN: 1101-9824, 117p.
Birkemeier W.A., Kraus N.C., Scheffner N.W., Knowles S.C., 1987. Feasibility Study of Quantitative Erosion Models for Use by the Federal Emergency Management Agency in the Prediction of Coastal Flooding (No. CERC-TR-87-8). Coastal Engineering Research Center Vicksburg Ms.
Cham D.D., Minh N.Q., Lam N.T., Son N.T., Thanh N.T., 2020. Identification of Erosion-Accretion Causes and Regimes Along the Quang Nam Coast, Vietnam. In: Trung Viet N., Xiping D., Thanh Tung T. (eds) APAC 2019. Springer, Singapore, 809–814.
Cham Dao Dinh, Nguyen Thai Son, Nguyen Quang Minh, Nguyen Tien Thanh, Tran Tuan Dung, 2020. An Analysis of Shoreline Changes Using Combined Multitemporal Remote Sensing and Digital Evaluation Model. Civil Engineering Journal, 6(1), 1–10.
Dang A.H., Nguyen T.D., 2020. Coastal Erosion in Cua Dai Beach: Future Influence of Climate Change and Sea Level Rise on Coastal Protection. In: Trung Viet N., Xiping D., Thanh Tung T. (eds) APAC 2019. Springer, Singapore, 521–528.
Deltares, 2011a. Delft3D-FLOW: Simulation of multi-dimensional hydrodynamic flows and transport phenomena, including sediments. User Manual, Version 3.15, Delft.
DHI, 2005. Users Manual: MIKE 11. Danish Hydraulic Institute.
Duy D.V., H. Tanaka, Y. Mitobe, V.C. Hoang, N.T. Viet, 2016. Study on river mouth delta formation and recent beach erosion on Cua Dai Beach, Vietnam. Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 72(2), 1657–1662.
Duy Dinh Van, Hitoshi Tanaka, Yuta Mitobe, Nguyen Trung Viet, Le Thanh Binh, 2017. Analysis of erosion and accretion waves on Cua Dai Beach in Central Vietnam. Tohoku Journal of Natural Disaster Science, 53, 53–58.
Fila J., M. Kampen, K. Knulst, R. Marijnissen, R.V. Noort, 2016. Coastal erosion Hoi An. Multidisciplinary Project Report. Delft University of Technology, 168p.
Graham, Douglas N., Michael B. Butts, 2005. Flexible, integrated watershed modelling with MIKE SHE. Watershed models, 849336090, 245–272.
Huynh Cong Hoai, Lieou Kien Chinh, Le DucVinh, 2018. The coastal wave regime and its effects on erosion in the coastline of Cua Dai. ISSN 1859-1531, 11(132-1), 31–35 (in Vietnammese).
Kamel A.H., 2008. Application of a hydrodynamic MIKE 11 model for the Euphrates River in Iraq. Slovak Journal of Civil Engineering, 2(1), 1–7.
Le P.T., 2003. Research and Prediction the accretion and erosion processes for Vietnam coastal zone” Vietnam - Indian Project (in vietnamese).
Le Xuan Hong, 1997. Coastal erosion in Vietnam are caused by human activitives. Collections of Marine Geological and Geophysical Studies, HNIO,
C-14C.91, 291–295 (in Vietnamese).
Massimo Rinaldi, Beatrice Mengoni, Laura Luppi, Stephen E Darby, and Erik Mosselman, 2008. Numerical simulation of hydrodynamics and bank erosion in a river bend. Water Resources Research, W09428, 44(9), 1–17.
Merritt Wendy S., Rebecca A. Letcher, Anthony J. Jakeman, 2003. A review of erosion and sediment transport models. Environmental Modelling & Software, 18(8–9), 761–799.
Midun Z., 1988. Coastal Erosion: Problems and Solutions. PersatuanSainsLautan Malaysia.
Nguyen Danh Thao, Hiroshi Takagi, Miguel Esteban, 2014. Coastal Disasters and Climate Change in Vietnam: Engineering and Planning.
Thompson J.R., H. RefstrupSørenson, H. Gavin, A. Refsgaard, 2004. Application of the coupled MIKE SHE/MIKE 11 modelling system to a lowland wet grassland in southeast England. Journal of Hydrology, 293(1–4), 151–179.
Van Rijn, Leo C., 1993. Principles of sediment transport in rivers, estuaries and coastal seas. Amsterdam: Aqua publications. ISBN 90-800356-2-9 bound, NUGI 816/831, 1006, 11–13.
Van Rijn, Leo C., 2007a. Unified view of sediment transport by currents and waves. I: Initiation of motion, bed roughness, and bed-load transport. Journal of Hydraulic Engineering, 133(6), 649–667.
Van Rijn, Leo C., 2007b. Unified view of sediment transport by currents and waves. II: Suspended transport. Journal of Hydraulic Engineering, 133(6), 668–689.
Van Rijn, Leo C., 2007c. Unified view of sediment transport by currents and waves. III: Graded beds. Journal of Hydraulic Engineering, 133(7), 761–775.
Warren I.R., H.K. Bach, 1992. MIKE 21: a modelling system for estuaries, coastal waters and seas. Environmental Software, 7(4), 229–240.