ICCE 2016 Cover Image


Cua Dai River mouth
Long-term morphological change
Landsat image

How to Cite

Tanaka, H., Hoang, V. C., & Nguyen, V. T. (2017). INVESTIGATION OF MORPHOLOGICAL CHANGE AT THE CUA DAI RIVER MOUTH THROUGH SATELLITE IMAGE ANALYSIS. Coastal Engineering Proceedings, 1(35), sediment.9.


Morphology of Cua Dai River mouth and adjacent sandy beaches in Hoi An City, Vietnam has been being eroded severely in recent years. Based on analysis of Landsat images, the long-term evolution, decadal scale, of morphology at this area since 1975 to 2015 is discussed. Morphology of river mouth in the period from 1975 to 1991 is highly similar to one in the period from 2003 to 2015, long sandspit on the left side and cuspate shoreline (cuspate foreland) on the right side, whereas the formation of double sandspit and welding between them after that was observed in the period from 1995 to 2002. From the characteristics of morphological change, there are three types of river mouth formed during the 40-year long period are classified. In addition, results of image analysis also indicate that the right bank of river shifted southward about 250 m. This is corresponding to the period with elongation of sandspit on the left after welding from offshore sandbar. The tip of cuspate shoreline on the right side was also observed to move to the south during the period that right river bank shifting southward. Besides the reduction of sediment supply to the river mouth, the shifting to south of main river channel diverting more sediment deposit on the right side of the river mouth, resulting in the erosion of the Cua Dai Beach on the left side became more serious. Countermeasure, which diverts more sediment to the left side, is highly required. Detailed effectiveness and magnitude of this structure can be evaluated based on numerical simulation.


Duc, D.M., M.T. Nhuan, and C.V. Ngoi. 2012. An analysis of coastal erosion in the tropical rapid accretion delta of the Red River, Vietnam. Journal of Asian Earth Sciences, 43(1), 98-109.

Feyisaa, G.L., H. Meilbya, R. Fensholtb, and S.R. Proud. 2014. Automated Water Extraction Index: A new technique for surface water mapping using Landsat imagery. Remote Sensing of Environment, 140, 23-35.

Hoang, V.C., T.M. Thanh, N.T. Viet, and H. Tanaka. 2015a. Shoreline change at the Da Rang River Mouth, Vietnam. Proceedings of the 5th International Conference on Estuaries and Coasts, 312-318.

Hoang, V.C., N.T. Viet, and H. Tanaka. 2015b. Morphological change on Cua Dai Beach, Vietnam: Part II theoretical analysis. Tohoku Journal of Natural Disaster Science, 51, 87-92.

Hung, N.M., and M. Larson. (2014). Coastline and river mouth evolution in the central part of the Red River Delta, in Thao, N. D., Takagi, H. and Esteban M. (Eds), Coastal Disasters and Climate Change in Vietnam - Engineering and Planning Perspectives, Elsevier, 43-79.

Larson, M., H. Hanson, and N.C. Kraus. 1987. Analytical solutions of the one-line model of shoreline change, Technical Report CERC-87-15: U.S. Army Engineer Waterways Experiment Station.

Maiti, S. and A.K. Bhattacharya. 2009. Shoreline change analysis and its application to prediction: A remote sensing and statistics based approach. Marine Geology, 257(1-4), 11-23.

Mau, L.D. 2015. Researching on scientific bases for the protection of coasts, estuaries serving the management and sustainable development of coastal areas in Quang Nam Province (in Vietnamese).

Noshi, Y., T. Uda, A. Kobayashi, and S. Miyahara. 2015. Beach changes observed in Phan Rang City in southeast Vietnam, Proceedings of the 8th International Conference on Asian and Pacific Coasts, Procedia Engineering, 116, 163-170.

Pardo-Pascual, J.E., J. Almonacid-Caballer, L.A. Ruiz, and J. PalomarVázquez. 2012. Automatic extraction of shorelines from Landsat TM and ETM+ multi-temporal images with subpixel precision. Remote Sensing of Environment, 123, 1-11.

Pradjoko, E. and H. Tanaka. 2010. Aerial photograph of Sendai Coast for shoreline behavior analysis. Proceedings of the 32nd International Conference on Coastal Engineering.

Robin, N., F. Levoy, O. Monfort, and E. Anthony. 2009. Short-term to decadal-scale onshore bar migration and shoreline changes in the vicinity of a megatidal ebb delta. Journal of Geophysical Research, 11 (F4), F04024 (13 pages).

Ryu, J.H., J.S. Won, and K.M. Min. 2002. Waterline extraction from Landsat TM data in a tidal flat: A case study in Gomso Bay, Korea. Remote Sensing of Environment, 83(3), 442-456.

Tanaka, H. and K. Suga. 1993. Sand terrace formation in front of a small river mouth due to flush flood. Advances in Hydro-Science and -Engineering, 1731-1736.

Tanaka, H., N. Shuto, N. Kuwahara, and K. Sato. 1996. Numerical modeling of 2-D flow and sediment movement in the vicinity of Natori River mouth. Flow Modeling and Turbulence Measurements VI, 813-820.

Thanh, T.M., Y. Mitobe, V.C. Hoang, N.T. Viet, and H. Tanaka. 2015. Coastal morphology change and its relationship with climate characteristics on Nha Trang Coast, Vietnam. Proceedings of the 5th International Conference on Estuaries and Coasts, 159-164.

Uda, T. and H. Matsuda. 1995. Interrelationship between river mouth terrace and sandspit formation at the Omono River mouth. Proceedings of Coastal Engineering, JSCE, 42, 566-570 (in Japanese).

Viet, N.T., V.C. Hoang, H.D. Hai, N.V. Giap, and H. Tanaka. 2015. Analysis on erosion of beaches adjacent to Cua Dai River mouth, central Vietnam. Proceedings of the 5th International Conference on Estuaries and Coasts, 153-158.

Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.