Oslo, Saturday, January 1, 2000
THE DANISH STATE BUYS NATIONAL GEOGRAPHIC HEIGHT MODEL FROM BLOM
The Danish coastline stretches for some 7,400 km with 80 % of the population living in urban areas that are linked to the sea. A large part of Denmark’s tourist activity is associated with the immediate coastal zone where there are 60-70,000 properties that can be affected by flooding.
Climate research anticipates rises in global sea levels of 20 to 80 cm by the year 2100. In Denmark, higher sea levels and erosion will drag the coastline back into low-lying areas. A half-metre increase in sea level over 100 years will result in a further pullback of 25 to 100 metres depending on the nature of the shoreline.
These are some of the reasons why on 11 May 2007 the Danish National Survey entered into a contract with a consortium comprising BlomInfo A/S and Scankort A/S for the supply of a new, national, detailed digital height model. The new height model will be used to solve a long list of projects at both national and local authority level, e.g. in the environmental field, for construction planning and for coastal protection. The purchase covers all state applications and also incorporates price options for the 79 local authorities that have indicated that they are potential buyers. “We considered that a joint purchase arrangement would be cheaper than if the public sector institutions had individually acquired this improved height data,” explains Deputy Director Nikolaj Veje of the Danish National Survey.
“The digital geographic height model is ideal on one hand for visualising the different scenarios in areas that will be affected by different sea levels, and for planning and prioritising preventative measures on the other. Computer simulations combined with data about land usage and ownership will be valuable for long-term planning. The costs of acquiring land height data for these tasks are marginal in this context,” considers Kristian Skak-Nielsen, Director of BlomInfo A/S.
The height accuracy in the national height model is better than 10 to 15 cm for well-defined points, and spot point density is 1.6 metres. Data is collected with the aid of laser scanners installed in aircraft.
”The digital height model is a milestone in national digital geodata. Produced in Denmark, it is the most detailed and precise geographic height model so far. We are delighted about the deal with Danish National Survey and we’re looking forward to working with the government and local authorities for getting the best use out of the data. We also expect joint development of knowledge in this field where the height model can provide social benefit,” emphasises Mads Staunskjær, Director of Scankort A/S.
Further information can be obtained from:
BlomInfo A/S, Kristian Skak Nielsen, Managing Director BlomInfo A/S, telephone +44 70 200 226, e-mail: email@example.com
About Scankort A/S
Scankort A/S is a Danish-owned cartography and geodata business. Scankort A/S produces maps and geodata for Denmark as well as for overseas. Its product portfolio includes aerial photography, laser scanning, cartography, orthophoto, 3D urban modelling, and GIS-related services.