Accumulation of pressures that may cause the modification of the background profile and / or burial in the Strait and Alboran Demarcation (EM ESAL PRE Modification of the Fund Profile)
Description
To identify areas with possible accumulation of pressures that can cause modification of the background profile and / or burial, 5 x 5 minute meshing is used. The area occupied by all the pressures described in section 2.1. of the "Pressure and Impact Analysis" of the Demarcation has been taken into account as well as the percentage that each of them covers in each cell. That is, the sum of the surfaces occupied by the pressures has been calculated and then the quotient between that sum and the surface area of each cell has been calculated. The result, therefore, reflects the areas with the largest occupied area (in percentage) in the funds by structures or actions that can modify their profile.
In cases where surfaces are not available (because they are information referring to points or lines), the layers have been transformed into polygons by the application of radii that approximate what these pressures may occupy, in particular:
- Sunken ships: radius of 75 metres
- Cables and pipes: radius of 5 meters
- Artificial and regenerated beaches: radius of 200 metres
The water sheets of all ports are included (zones I in the case of Ports of General Interest), since they are susceptible to being dredged.
Cells are classified according to the following ranges:
Very High: Greater 20 % / High: 15 to 20 % / Average: 10 to 15 % / Low: 5 to 10% / Very Low: less than 5 %
Resources
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http://remro.cedex.es/WebCepyc/Estrecho/EPerfilFondoMallado.rar |