Breach initiation by the response of coastal barriers during storm surges

The present paper is concerned with the processes of coastal barrier breaching with focus on the breach initiation induced by high activity of tropical cyclones in the northern and central coast of Vietnam. The breach initiation by the response of coastal barriers during storm surges can also be a common practice encountered in many coasts...

Seasonal behaviour of tidal inlets in a tropical monsoon area

Morphodynamics of a tidal inlet system on a micro-tidal coast in a tropical monsoon influenced region is modelled and discussed. Influences of river flow and wave climate on the inlet morphology are investigated with the aid of process-based state-of-the-art numerical models. Seasonal and episodic behaviour of the inlet system under the...

Estimation of bed protection damage using numerical flow modelling

The current research is aimed at evaluating the applicability of a numerical flow model to predict bed damage. First, an experimental study was carried out to get more inside into the relation between flow forces acting on a bed and the bed response (damage). The experiments were then used as the basis for the evaluation. Second, the flow was...

The use of vetivers in coastal engineering

Vetiver grass is a sustainable and innovative solution for the protection of banks. It is shown that Vetiver grass is able to establish a full-stop of bank erosion caused by rapid drawdown. Therefore it provides us with strong indications that it is highly suitable as an anti-erosion measure. A combination of cohesive soil and Vetiver grass...

Hydrodynamic modelling of tidal inlets in Hue, Vietnam

Application of an one-dimensional numerical model for hydrodynamic simulation of a complex lagooninlet system in Vietnam is presented. Model results help to get a better understanding on the behaviour of the system. Based on the numerical model results and analytic solutions, stability of tidal inlets is evaluated.

A new view on falling aprons

In a flume of BallastHam Dredging a falling apron model has been constructed and loaded by current. The tests have been done with different rock sizes, different layer thickness of the top storage of the apron and two different gradings. In summary it was found that for both the narrow graded rock layers as well as for wide graded riprap the...

Design of low-crested (submerged) structures: An overview

Low crested and submerged structures (LCS) such as detached breakwaters and artificial reefs are becoming very common coastal protection measures (used alone or in combination with artificial sand nourishment). Their purpose is to reduce the hydraulic loading to a required level that maintains the dynamic equilibrium of the shoreline. To attain...

Sustainable transfer of coastal engineering knowledge at post graduate level

Practical problems in the transfer of knowledge and skills to coastal engineers in training, with focus on the training of coastal engineers from developing countries and other countries in transition. The difference between the training of scientists and engineers.

Wave transmission in mangrove forests

There is an increasing awareness of the role of mangrove forests in coastal ecosystems and coastal protection. At the transition between ocean and land, they have to absorb the energy that comes from the motion of the water. Little quantitative in formation is available, however, on wave transmission in these forests. In this paper the...

Conceptual design of berm breakwaters

The extensive research of Van der Meer (1988) on dynamically stable slopes, including berm breakwaters, but also rock and gravel beaches. was re-analyzed and focussed only on the behaviour of the seaward slope of berm breakwaters in Van der Meer (1992), leading to a computational model on a personal computer. Results are presented in this paper....

The requirements for Coastal Engineers in Integrated Coastal Zone Management

Worldwide there is a need for training of engineers to work within the framework of Coastal Zone Management. This has effects on the education of engineers. Moreover, the requirements for an educational program for coastal engineers from developing countries are quite different from the requirements for the training of engineers from the...

Berm breakwater and quarry investigations in Iceland

The paper describes the design philosophy for rubble-mound berm breakwaters. The estimated yield from an armourstone quarry is used as an integrated part of the design in an attempt to optimize the utilization of the quarry. All size grades are used from the quarry.

Design criteria for placed block revetments and granular filters

Design criteria for the coverlayer and filter layer of a placed block revetment are presented. These design criteria were derived on the basis of large scale model tests on revetments and test on granular filters. It is shown that the hydraulic loading in the filter can be described with equations of quasi-stationary flow. General filter...