The Development of Sand Waves and the Maintenance of Navigation Channels in the Bisanseto Sea

Katoh, Kenichi; Kume, Hidetoshi; Kuroki, Keiji; Hasegawa, Junzo

doi:10.1061/9780784404119.265

Cited by 20 publications

(36 citation statements)

References 2 publications

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“…The regeneration process of the sand waves was followed during the next 10 years (see Katoh et al, 1998). Once a year, the depth was measured using echo sounding in an area of 500Â2000 m. The data was stored with a resolution of 5Â5 m. Fig.…”

Section: Measurementsmentioning

confidence: 99%

“…The consequence of the sand waves being free instabilities is that they tend to recover after dredging. This phenomena has been observed and monitored by Katoh et al (1998). At this moment, we do not have a validated model to simulate this process sufficiently accurate.…”

Section: Introductionmentioning

confidence: 99%

“…Sand waves are found in shallow tidal seas all over the world (Ludwick, 1972;Boggs, 1974;Field et al, 1981;Aliotta and Perillo, 1987;Harris, 1988;Huntley et al, 1982;Ikehara and Kinoshita, 1994;Katoh et al, 1998). In some cases, sand waves occur superimposed on large scale features such as tidal sand banks (Lanckneus and De Moor, 1991), shoreface-connected ridges (Van de Meene and Van Rijn, 2000) or individual shoals (Katoh et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

“…In the Bisanseto Sea, a field of sand waves has been topped off. Katoh et al (1998) showed that the sand waves regenerate in several years time. The costs of repeated dredging are high and the responsible authorities want to minimize these costs.…”

Section: Introductionmentioning

confidence: 99%

“…In a number of navigation channels, sand waves limit the depth of these channels (Katoh et al, 1998;Van Maren, 1998).…”

Section: Introductionmentioning

confidence: 99%

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Regeneration of sand waves after dredging

Knaapen

Hulscher

2002

Coastal Engineering

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Sand waves are large bed waves on the seabed, being a few metres high and lying hundreds of metres apart. In some cases, these sand waves occur in navigation channels. If these sand waves reduce the water depth to an unacceptable level and hinder navigation, they need to be dredged. It has been observed in the Bisanseto Channel in Japan that the sand waves tend to regain their shape after dredging. In this paper, we address modelling of this regeneration of sand waves, aiming to predict this process. For this purpose, we combine a very simple, yet effective, amplitude-evolution model based on the Landau equation, with measurements in the Bisanseto Channel. The model parameters are tuned to the measured data using a genetic algorithm, a stochastic optimization routine. The results are good. The tuned model accurately reproduces the measured growth of the sand waves. The differences between the measured weave heights and the model results are smaller than the measurement noise. Furthermore, the resulting parameters are surprisingly consistent, given the large variations in the sediment characteristics, the water depth and the flow field. This approach was tested on its predictive capacity using a synthetic test case. The model was tuned based on constructed predredging data and the amplitude evolution as measured for over 2 years. After tuning, the predictions were accurate for about 10 years. Thus, it is shown that the approach could be a useful tool in the optimization of dredging strategies in case of dredging of sand waves. D

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Section: Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In a number of navigation channels, sand waves limit the depth of these channels (Katoh et al, 1998;Van Maren, 1998).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Regeneration of sand waves after dredging

Knaapen

Hulscher

2002

Coastal Engineering

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Reconstruction of large complex sand-wave bathymetry with adaptive partitioning combining satellite imagery and sparse multi-beam data

Zhang

Wang

et al. 2022

J. Ocean. Limnol.

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On the parameterization of biological influences on offshore sand wave dynamics

et al. 2009

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The bed of the North Sea is covered by sand waves and houses a great number of macrobenthic animals. These bio-engineers are known to have a significant influence on the stability of the bed and thereby on the geomorphology of the seabed. This paper proposes a parameterization of these bio-geomorphological interactions. Given the abundance of three dominant bio-engineers on the Dutch Continental Shelf, the predicted occurrence of sand waves, in which the parameterization is included, shows significantly better results, compared to the prediction for the default case without biology. Therefore, the inclusion of biological activity could be important to predict the occurrence of sand waves.

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The Development of Sand Waves and the Maintenance of Navigation Channels in the Bisanseto Sea

Cited by 20 publications

References 2 publications

Regeneration of sand waves after dredging

Regeneration of sand waves after dredging

Reconstruction of large complex sand-wave bathymetry with adaptive partitioning combining satellite imagery and sparse multi-beam data

On the parameterization of biological influences on offshore sand wave dynamics

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