ABSTRACT

Matsumoto, H.; Dickson, M.E., and Kench, P.S., 2016. Modelling the development of varied shore profile geometry on rocky coasts. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., and McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal of Coastal Research, Special Issue, No. 75, pp. 597–601. Coconut Creek (Florida), ISSN 0749-0208.

This paper describes a new rocky shore profile evolution model. It differs from existing models that focus on shore platform development, through its ability to simulate a wide range of emergent profile shapes. The new model considers a relatively limited number of coastal processes that are represented with simplified mathematical descriptions. The paper describes initial model evaluation against field data from the Japanese coast that were influential in the creation of a widely used conceptual model for rocky shore evolution. The new numerical model produces outputs that are generally consistent with the field observations, but there are some areas of difference which are discussed in the paper. An additional area of focus in the paper considers the new model's capability of producing a wide range of profile types with characteristic geometries, which are also commonly seen in nature, but have been subject to little systematic analysis. Investigation of model outcomes indicates that a broad range of profile shapes in the model requires consideration of the erosive effects of varied wave types (i.e. unbroken, breaking and broken waves).

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