Classification of Coastlines == |+|
== of ==
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Image:classification coast.jpg| thumb|right|A classification of coastlines and a presentation of morphological features.]] |+|
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|−|The general principles have been presented for the [[Classification of Coastal Profiles| classification of coastal profiles]]. However, the type of coastal profile is not sufficient to characterise the [[coastal morphology]] or to evaluate the stability of the [[coastline]]s, as these conditions also depend on the [[longshore transport|longshore processes]]. The interaction between the longshore processes and the given coastal geology, sediment supply, etc., results in the formation of different types of coastlines and coastal features. Therefore, in order to be able to make an overall evaluation of a certain site in relation to [[shoreline management]] activities, it is also relevant to study the coastline features. This is done by dividing the coastlines into nearly straight sections and into special coastal features, such as [[deltas]], [[barrier islands]], [[sand spits]], etc. The nearly straight coastlines are subdivided into categories dependent on the [[Angle of Incidence|angle of incidence]] of the prevailing [[waves]] and dependent on wave exposure. The geomorphological processes associated with these physical strutures are also fundamental to the way in which the more dynamic habitats and ecosystems of [[Terrestrial coastal habitats and ecosystems|coastal terrestrial]] areas and [[ Coastal habitats and ecosystems in transitional waters|transitional waters]] develop. |+|
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Revision as of 11:59, 25 March 2008
Environmental risk assessment of marine activities
This article focuses on Ecological Risk Assessment (EcoRA) of Marine activities. We first describe the general aspects and steps of the ERA process that most risk assessments are confronted with. The application of environmental risk assessment of marine activites is then illustrated in a case study focusing Merchant Shipping in the Belgian Part of the North Sea (BPNS).
In broad terms, risk assessment is the procedure in which the risks posed by inherent hazards involved in processes or situations are estimated either quantitatively or qualitatively. Environmental Risk Assessments (ERA) are carried out to examine the effects of an entity or agent on humans (Health Risk Assessment) and ecosystems (Ecological Risk Assessment).