Density of service vessel transits, expressed in kilometres per squared kilometre, within the spatial reference EPSG: 3035 at a 10km spatial resolution and including the INSPIRE compliant cell identifier. Transit distance was calculated from the CIMA foundations AIS dynamic point data which was recorded from an antennae located at 44.30°N and 8.45°E between May 2013 and October 2014. After an initial preparation, cleaning and filtering procedure a GIS platform was used to create line transits from the positional points for each unique vessel for each day. The length of the transits were then summed within each grid cell for total and monthly composites covering the North West Mediterranean Sea.
Density of passenger vessel transits, expressed in kilometres per squared kilometre, within the spatial reference EPSG: 3035 at a 10km spatial resolution and including the INSPIRE compliant cell identifier. Transit distance was calculated from the CIMA foundations AIS dynamic point data which was recorded from an antennae located at 44.30°N and 8.45°E between May 2013 and October 2014. After an initial preparation, cleaning and filtering procedure a GIS platform was used to create line transits from the positional points for each unique vessel for each day. The length of the passenger vessel transits were then summed within each grid cell for total and monthly composites covering the North West Mediterranean Sea.
Density of fishing vessel transits, expressed in kilometres per squared kilometres, within the spatial reference EPSG:3035 and including the INSPIRE compliant cell identifier. Transit distance was calculated from the CIMA Foundations AIS dynamic point data which was recorded from an antennae located at 44.30°N and 8.45°E between May 2013 and October 2014. After an initial preparation, cleaning and filtering procedure, a GIS platform was used to create line transits from the positional points for each unique vessel for each day. The length of the transits were then summed within each grid cell for total and monthly composites covering the North West Mediterranean Sea.
Predominant ship speed categories plot on a INSPIRE compliant grid including the cell identifier and using the spatial reference EPSG: 3035 at 5km spatial resolution. Classifications were to 4 speed categories (5-10, 10-15, 15-20 and 20 knots plus) were attributed for each cell according to the speed category with the highest relative vessel density. Vessel density expressed in kilometres per square kilometre were calculated from the CIMA foundations AIS dynamic point data which was recorded from an antennae located at 44.30°N and 8.45°E between May 2013 and October 2014. After an initial preparation, cleaning and speed classification filtering procedure a GIS platform was used to create line transits from the positional points for each unique vessel for each day. The length of the transits for each speed classification of all pleasure, passenger, cargo and tanker vessels were then summed and the grid cell classified to the speed category with the highest density.
