A Long-Term Prediction of Beach Changes around River Delta using Contour-Line-Change Model

Uda, Takaaki; Miyahara, Shiho; San-Nami, Toshiro; Serizawa, Masumi

doi:10.5772/intechopen.85207

Cited by 2 publications

(3 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The investigation of the mouth of the Ma River encompasses not only the geometrical characteristics of the cuspate delta but also the determination of the shoreline orientations. In the context of wave-dominated river deltas, the assessment of the shoreline orientations on both sides of the mouth of the river assumes paramount significance for understanding the evolution of this geographical feature [2,23,46,47]. To facilitate the estimation of shoreline orientations, it is imperative to define shoreline angles.…”

Section: Shoreline Orientations At the River Mouthmentioning

confidence: 99%

“…In the context of wave-dominated river deltas, the assessment of the shoreline orientations on both sides of the mouth of the river assumes paramount significance for understanding the evolution of this geographical feature [2,23,46,47]. To facilitate the estimation of shoreline orientations, it is imperative to define shoreline angles.…”

Section: Shoreline Orientations At the River Mouthmentioning

confidence: 99%

See 1 more Smart Citation

Coastal Erosion Caused by River Mouth Migration on a Cuspate Delta: An Example from Thanh Hoa, Vietnam

Duy,

Ty,

Than

et al. 2023

Hydrology

View full text Add to dashboard Cite

Coastal erosion poses a significant threat to the infrastructure of the coastal community at the mouth of the Ma River in Thanh Hoa Province, Vietnam. In response, emergency solutions such as hard, protective structures are often implemented. However, this approach exacerbates the problem as the underlying mechanisms of coastal erosion are not adequately investigated and understood. In this study, the long-term configuration of the mouth of the Ma River in Thanh Hoa Province, Central Vietnam, is investigated using Landsat imagery spanning from 1987 to 2023. An analytical solution of a one-line model for shoreline change was also used to examine the sand discharge from the Ma River and the diffusion coefficient for the sand transported along the shore by breaking waves. The results showed an asymmetric configuration of the mouth of the Ma River over the past 37 years. The supply of sand from the Ma River is around 350,000 m3/year. The majority of sand (ranging from 55% to 75%) is mainly transported to the northern beach of the Ma River delta. This uneven distribution of sand from the Ma River has led to the asymmetrical morphology of the delta apex in which the northern part of the Ma River delta is experiencing northward movement while the southern part of the Ma River Delta is moving southward and landward. The asymmetrical morphology of the delta at the mouth of the Ma River has recently been identified as the cause of severe coastal erosion. The diffusion coefficient value determined for the transportation of longshore sand along the deltaic lobes of the Ma River delta corresponds to 90 m2/day. This study offers a practical method for investigating morphological changes in cuspate deltas, especially when measured field data are limited.

show abstract

Section: Shoreline Orientations At the River Mouthmentioning

confidence: 99%

Section: Shoreline Orientations At the River Mouthmentioning

confidence: 99%

Coastal Erosion Caused by River Mouth Migration on a Cuspate Delta: An Example from Thanh Hoa, Vietnam

Duy,

Ty,

Than

et al. 2023

Hydrology

View full text Add to dashboard Cite

show abstract

“…Moreover, the investigation of the Ma River mouth encompasses not only the geometrical characteristics of the delta cuspate but also the determination of shoreline orientations. In the context of wave-dominated river deltas, the assessment of shoreline orientations on both sides of the river mouth assumes paramount significance for understanding the evolution of this geographical feature [2,23,43,44]. To facilitate the estimation of shoreline orientations, it is imperative to define shoreline angles.…”

Section: Shoreline Orientations At the River Mouthmentioning

confidence: 99%

Coastal Erosion Caused by River Mouth Migration on Cuspate Delta: An Example from Thanh Hoa, Vietnam

Duy,

Ty,

Than

et al. 2023

Preprint

View full text Add to dashboard Cite

Coastal erosion is threatening the infrastructures of coastal community at the Ma River mouth in Thanh Hoa province, Vietnam. When coastal erosion happens, people try to prevent it by emergency solutions like hard structures. However, this approach usually leads to more severe problem since the mechanism for coastal erosion is not investigated and understood properly. In this study the long-term configuration of Ma River mouth in Thanh Hoa Province, Central Vietnam has been investigated using Landsat imagery from 1987 to 2023. An analytical solution of one-line model for shoreline change was also employed to calculate the sand discharge from Ma River as well as the diffusion coefficient for sand transported along-shore by breaking waves. There was an asymmetric configuration of the Ma River mouth during the last 37 years. The sand supply from the Ma River is around 350,000 m3/year. This amount of sand is going mainly to the northern beach of the Ma River delta (from 55% to 75%). The asymmetric morphology of the Ma River mouth delta is the trigger for severe coastal erosion reported recently. This study provides a quick and easy method to investigate the morphological change of cuspate deltas where measured data is limited.

show abstract

A Long-Term Prediction of Beach Changes around River Delta using Contour-Line-Change Model

Cited by 2 publications

References 18 publications

Coastal Erosion Caused by River Mouth Migration on a Cuspate Delta: An Example from Thanh Hoa, Vietnam

Coastal Erosion Caused by River Mouth Migration on a Cuspate Delta: An Example from Thanh Hoa, Vietnam

Coastal Erosion Caused by River Mouth Migration on Cuspate Delta: An Example from Thanh Hoa, Vietnam

Contact Info

Product

Resources

About