Accumulation of pressures that may cause a change in the background profile and/or burial in the Canary Islands (EM CAN PRE Change in the background profile)
Description
In order to identify the areas affected by a change in the background profile and/or possible burial, 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 and what percentage they occupy 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 there is no surface area (because it is information referring to points or lines), the layers have been transformed into polygons by applying radii that approximate what these pressures can occupy. The radii applied are:
- Dumping of dredged material: radius of 657 meters (radio extracted from the average surface of the discharges produced throughout the Spanish state).
- Cables and pipes: radius of 5 meters.
- Artificial and regenerated beaches: radius of 200 meters.
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.
The following ranges are used:
Very High: Major 5%/High: 2.51 to 5% /Medium: 0.51 to 2.5% /Low: 0.051 to 0.5% /Very Low: minor 0.05%
Resources
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http://remro.cedex.es/WebCepyc/Canaria/CPerfilFondoMallado.rar |