Wave Setup at Different River Entrance Morphologies

Tanaka, Hitoshi; Nguyen, Xuan Tinh; Nagabayashi, Hisao

doi:10.1142/9789814277426_0082

Cited by 4 publications

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“…Numerical model was also widely used to analyze this phenomenon (Shuttleworth et al, 2005;Oliveira et al, 2006; McLean and Hinwood 2010). The river mouth morphology also affects the water level rise in a river mouth caused by the wave set-up (Oliveira, et al, 2006;Tanaka et al, 2008;Malhadas et al, 2009;Olabarrieta, 2011). In this study, a detailed analysis on the water level data at the river mouth was conducted, with an aim of assessing the river mouth morphological conditions during the period, when aerial-photographs are unavailable.…”

Section: Water Level Data Analysismentioning

confidence: 99%

Morphological changes at the Nanakita River mouth after the Great East Japan Tsunami of 2011

Tanaka

Adityawan

Mano

2014

Coastal Engineering

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This study investigates the morphology changes near the Nanakita river mouth in Japan. The morphology of the river mouth was greatly influenced during The Great East Japan Tsunami of 2011. The gradual morphological changes at the river mouth was investigated using two sets of data, o which, one was the continuous water level measurement data in the river entrance and in the sea, and the other being the intermittent aerial-photographs. The statistical parameters, viz., the correlation coefficient and the linear gradient between the two water level data were analyzed, which formed as the basic for understanding the behavior of the river mouth, like river mouth closure or opening detected by the analysis of the water level variation. The proposed method is found efficient and effective in the evaluation of the morphological changes near a river mouth.

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Section: Water Level Data Analysismentioning

confidence: 99%

Morphological changes at the Nanakita River mouth after the Great East Japan Tsunami of 2011

Tanaka

Adityawan

Mano

2014

Coastal Engineering

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“…The wave set-up height on the shoreline can be generally expressed as a function of wave height (Battjes and Janssen, 1978;Bowen et al, 1968;Goda, 1975;Guza and Thornton, 1981). Similarly, wave set-up height in a river entrance can be assumed to be proportional to the deep water wave height as follows (Hanslow and Nielsen, 1992;Hanslow et al, 1996, andTanaka et al, 2008).…”

Section: Relationship Between Wave Set-up Height and Wave Heightmentioning

confidence: 99%

“…Moreover, distinct difference of the behavior of a can be seen between the year of 2003 and 2004. Tanaka et al (2008) analyzed wave set-up height at different river entrance morphologies facing the Pacific Ocean in Japan, and concluded that the wave set-up height is inversely proportional to the average water depth at river mouth. From the result in Fig.…”

Section: Relationship Between Wave Set-up Height and Wave Heightmentioning

confidence: 99%

“…There are several researchers studied on the empirical water level rise at river entrance such as Hanslow et al (1992Hanslow et al ( , 1996, Tanaka et al (2000Tanaka et al ( , 2003Tanaka et al ( , 2008, Dunn (2001), Oshiyama et al (2001), Shuttleworth et al (2005) and Malhadas et al (2009). Among them, Hanslow et al (1992) have conducted a very detailed measurement of wave set-up at the entrance of Brunswick Heads on the north coast of New South Wales in Australia.…”

Section: Introductionmentioning

confidence: 99%

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Monthly Variation of Wave Set-Up Height in the Yoneshiro River Mouth

Tanaka

Nakura²,

Nguyen

2011

Int. Conf. Coastal. Eng.

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It is known that in the coastal area facing the Sea of Japan, winter storm is very severe due to strong wind from Siberia and the wave height attains to 6-7m during this period. Hence water level rise in a river entrance due to wave set-up may exceed 1m, which is considerably higher than average tidal amplitude in this region, 0.2-0.5m. However, due to much influence of complicated geographical processes on wave set-up height in a river mouth, quantitative investigations have hardly been done until now. In addition, the water level in a river mouth is complicatedly interacted among tidal motion, river discharge, ocean waves and so on, and hence it is difficult to make highly precise estimation. In this study, water level rise in the mouth of the Yoneshiro River in Akita Prefecture, Japan is investigated. Geographical features of the river mouth are greatly dependent on seasonal variation of major physical forces. Therefore, the characteristic of wave set-up is assumed to be different according to the season, and hence monthly variation of wave set-up is quantified. It is found in winter, the water level rise by wave set-up becomes approximately 10% of the deep water wave height, whereas this ratio decreases rapidly in summer due to flushing of sediment around the river mouth caused by frequent occurrence of floods.

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Wave set-up height in river entrances due to extreme waves

Tanaka

Tinh

2017

Procedia IUTAM

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Wave Setup at Different River Entrance Morphologies

Cited by 4 publications

References 0 publications

Morphological changes at the Nanakita River mouth after the Great East Japan Tsunami of 2011

Morphological changes at the Nanakita River mouth after the Great East Japan Tsunami of 2011

Monthly Variation of Wave Set-Up Height in the Yoneshiro River Mouth

Wave set-up height in river entrances due to extreme waves

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