Land-use Change

Monitoring and analysing changes in land use is an essential part of planning for a sustainable future and is a commercial, political and technical challenge. In recent years, much contemporary satellite data and aerial photography has been used to undertake these studies. However, when historical spatial information is needed, historic aerial reconnaissance photographs supplied by NCAP are often the only available resource.

Our extensive range of historical aerial photographs, dating back to the 1930's, can aid in analysis of past land use practices which could have an environmental impact on a site today. The cost of procuring and analysing historical aerial photography is much less than the cost of unforeseen ground conditions and claims.

Case Study - quarries and mines

For brownfield sites, aerial photographs are often the only evidence for features that will affect site development. The original excavation depth of landfill sites can be calculated. Physical features such as building foundations, slurry ponds and chemical tanks may be located on early aerial photography.

1946

Abandoned excavation sites, such as quarries and mines, often become dumping grounds for the fly-tipping of unwanted materials. Objects not normally documented, such as chemical drums, old tyres, vehicles and concrete rubble may be observed on aerial photography.

1965

When multiple instances of cover are available, the type, age and thickness of fills can be identified and located.

1971

Knowing the location and type of buried physical obstructions and chemical residues allows specific problems to be better defined. Resources can then be allocated for targeted remediation ahead of new construction projects.