Nearshore maps - user guide

As part of the environmental strategic oil spill response plans for selected areas, a series of thematic maps in A1 size PDF files have been prepared. Simular maps are also prepared as part of well specific Net Environmental Impact Assessments. Below, brief information on how to use these maps are given.

General

The maps have been prepared in a PDF format in order to facilitate ease of use without necessitating GIS familiarity, and to make it easy to share maps with relevant discussion partners. They are in an A1 size, making printed versions available in a size suited for discussions in the operation room, involving 2nd and 3rd line personnel. The user should be aware that individual layers of the PDF file may be switched on and off in the Adobe Reader program, changes that will also be reflected when printing.

 

Access

In this map, points where the end of a road is less than 50 (and 10) m from the shoreline are indicated. In addition, fairways and fishing harbours marked by the NCA are indicated. This is relevant information in the planning of where oil spill response equipment may be transported into the area by ship, and from the road to the shoreline.

 

Base map

In this map, basic map information for the area is presented. It is prepared to serve as a "blank" base map, for discussions and note taking in 2nd and 3rd line.

 

Highest Environmental priorities

In this map, the sites of highest environmental priority are presented. The purpose of this map is to show which sites that have the highest priority for protection in an initial phase of an oil spill incident.

 

Operational depths

In this map, areas of water depth less than 10 m are indicated. These are areas where there are operational restrictions for ship borne oil spill recovery systems under wave conditions as specified in the map legend. The map also shows the extent of the intertidal zone. Where sheltered, such areas have a high biological productivity. In addition, oil recovery operations in such areas are labour intensive and challenging. Where available, areas where driftwood tend to aggregate are indicated, as well as tidal current directions. Areas where driftwood tend to aggregate are areas where also oil would tend to aggregate. In a given situation, the map gives an indication of operational possibilities and limitations on the windward side.

 

Shoreline types

In this map, shoreline types are presented. The purpose of this map is to differentiate between the different types of shoreline, in terms of potential for remobilisation of oil and extent of effort required in shoreline cleanup. Red colours indicate the most challenging shoreline types.

 

Wind rose

In this map, wind conditions for the area are presented as a wind rose. The wind rose is based on statistics from the last 10 years on the location specified above the plot.