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Rafik Absi and Hitoshi Tanaka
Turbulence related to flow oscillations near the seabed, in the wave bottom boundary layer (WBBL), is the phenomenon responsible for the suspension and transport of sediments. The vertical distribution of turbulent eddy viscosity within the WBBL is a key...
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Dinh Van Duy, Tran Van Ty, Tran Nhat Thanh, Huynh Vuong Thu Minh, Cao Van De, Vu Hoang Thai Duong, Trinh Cong Dan, Nguyen Trung Viet and Hitoshi Tanaka
Tidal inlets with attached sand spits are a very common coastal landform. Since the evolution of sand spits along coastlines influence the social-economic development of local coastal areas, sand spits have become the objects of numerous studies. However...
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Dinh Van Duy, Tran Van Ty, Cao Tan Ngoc Than, Cu Ngoc Thang, Huynh Thi Cam Hong, Nguyen Trung Viet and Hitoshi Tanaka
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, th...
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Dinh Nhat Quang, Nguyen Quang Duc Anh, Ho Sy Tam, Nguyen Xuan Tinh, Hitoshi Tanaka and Nguyen Trung Viet
Coastal erosion and accretion along the Quang Nam coast in Vietnam have been increasing in recent years, causing negative impacts on the inhabitants and local ecology. The Cua Lo estuary in Nui Thanh district has a complex hydrodynamic regime owing to it...
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Javed Akhtar, Ahmad Sana, Syed Mohammed Tauseef and Hitoshi Tanaka
The Sultanate of Oman is an arid country in the Arabian Peninsula suffering from insufficient freshwater supplies and extremely hot weather conditions. The only source of recharge is rainfall, which is scarce and varies with space and time, for the aquif...
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Dinh Van Duy, Hitoshi Tanaka, Magnus Larson and Nguyen Trung Viet
Analytical solutions for a one-line model for shoreline changes are employed to investigate the formation of two wave-dominated river delta coastlines, along with a small-scale laboratory experiment. Since the present analytical solution can be applied o...
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Nguyen Xuan Tinh, Hitoshi Tanaka, Xiping Yu and Guangwei Liu
In this study, the tsunami-induced bottom boundary layer was investigated based on actual waveforms obtained by the GPS buoys along the coast of the Tohoku region during the 2011 Great East Japan Earthquake tsunami. The k-? model was utilized for the num...
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Hitoshi Tanaka, Nguyen Xuan Tinh and Ahmad Sana
According to recent investigations on bottom boundary layer development under tsunami, a wave boundary can be observed even at the water depth of 10 m, rather than a steady flow type boundary layer. Moreover, it has been surprisingly reported that the ts...
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Nguyen Trong Hiep, Hitoshi Tanaka and Nguyen Xuan Tinh
The Nobiru Coast is situated on the southwest of the Ishinomaki Bay. The 2011 Great East Japan Tsunami severely devastated the Nobiru Coast and the adjacent Naruse River mouth. In this study, an investigation was conducted based on the available historic...
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Hitoshi Tanaka, Nguyen Xuan Tinh, Xiping Yu and Guangwei Liu
A theoretical and numerical study is carried out to investigate the transformation of the wave boundary layer from non-depth-limited (wave-like boundary layer) to depth-limited one (current-like boundary layer) over a smooth bottom. A long period of wave...
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