70
P.A.G. Watts
information technology. Again the nature and spread of impact of the emergency will
dictate the detailed choice of products, but for the majority of contingency planning
purposes the 1:50,000 colour raster, 1:10,000 raster and large scales Land-Line.Plus®
product suite will form the most appropriate core to a “best practice” system.
Flood Risk and Hazard Analysis
As concern over global warming and changing sea levels increases, so the need to
consider the consequences for real estate insurance has been brought into sharper focus.
This is an issue that impacts on both landowners seeking to insure, and those providing
the cover. Assessment of the risk for insurers and therefore the likely premiums and
caveats imposed upon those seeking cover require increasingly sophisticated spatial
analyses to provide predictions of (future changes to) the likely frequency and
magnitude of any coastal flooding threat. These analyses rely on the combination of
socio-economic and demographic data about the residential and commercial
environment, with the geospatial and topographic location and aspect of individual or
groups of properties.
OS has a number of relevant products here, including ADDRESS-POINT™
and DATA-POINT™. These are national postal address and postcode unit point
reference gazetteer products respectively. These products offer property geo-location to
0.1m and to circa 100m respectively. They can be effectively integrated with LandForm PROFILE™, (the data product derived from the OS’ National Height Database)
to provide a three-dimensional geo-reference for individual or grouped properties. This
can be used as a geospatial template against which socio-economic data, and hence risk,
can be modelled. OS is also working with a number of specialist Value Added
Resellers to develop these product integrations so that refined risk models rather than
raw data can be delivered to users.
For those who wish to represent risk or hazard zones geographically,
BaseData.GB (1:625,000) and Strategi provide excellent national and regional base
templates, while 1:50,000 Colour Raster (Landranger) and 1:10,000 Raster provide a
regional and local perspective. If detailed flood management planning is required, OS’
Solution Centre can supplement the general purpose Digital Terrain Models supplied
under the Land-Form PROFILE product brand, by the addition of extra height data.
This enables much more sensitive high-resolution terrain models to be generated.
These, linked to Land-Line.Plus data, offer a very powerful tool for scenario modelling
and visualisation.
Why GIS for Best Practice?
As discussed above, the Coastal Zone Community is multi-user and multi-agency.
There is a requirement to manage ongoing rather than one-off processes. These
functions demand storage and presentation of information at a variety of scales. Such
activities will be best served if the management systems underpinning them offer
dynamic data management, the ability to facilitate customised presentation and display
by the user, and an ability to combine, aggregate, integrate and analyse disparate data in
a variety of different “value added” ways. These facilities will enable decisions to be
P.A.G. Watts
information technology. Again the nature and spread of impact of the emergency will
dictate the detailed choice of products, but for the majority of contingency planning
purposes the 1:50,000 colour raster, 1:10,000 raster and large scales Land-Line.Plus®
product suite will form the most appropriate core to a “best practice” system.
Flood Risk and Hazard Analysis
As concern over global warming and changing sea levels increases, so the need to
consider the consequences for real estate insurance has been brought into sharper focus.
This is an issue that impacts on both landowners seeking to insure, and those providing
the cover. Assessment of the risk for insurers and therefore the likely premiums and
caveats imposed upon those seeking cover require increasingly sophisticated spatial
analyses to provide predictions of (future changes to) the likely frequency and
magnitude of any coastal flooding threat. These analyses rely on the combination of
socio-economic and demographic data about the residential and commercial
environment, with the geospatial and topographic location and aspect of individual or
groups of properties.
OS has a number of relevant products here, including ADDRESS-POINT™
and DATA-POINT™. These are national postal address and postcode unit point
reference gazetteer products respectively. These products offer property geo-location to
0.1m and to circa 100m respectively. They can be effectively integrated with LandForm PROFILE™, (the data product derived from the OS’ National Height Database)
to provide a three-dimensional geo-reference for individual or grouped properties. This
can be used as a geospatial template against which socio-economic data, and hence risk,
can be modelled. OS is also working with a number of specialist Value Added
Resellers to develop these product integrations so that refined risk models rather than
raw data can be delivered to users.
For those who wish to represent risk or hazard zones geographically,
BaseData.GB (1:625,000) and Strategi provide excellent national and regional base
templates, while 1:50,000 Colour Raster (Landranger) and 1:10,000 Raster provide a
regional and local perspective. If detailed flood management planning is required, OS’
Solution Centre can supplement the general purpose Digital Terrain Models supplied
under the Land-Form PROFILE product brand, by the addition of extra height data.
This enables much more sensitive high-resolution terrain models to be generated.
These, linked to Land-Line.Plus data, offer a very powerful tool for scenario modelling
and visualisation.
Why GIS for Best Practice?
As discussed above, the Coastal Zone Community is multi-user and multi-agency.
There is a requirement to manage ongoing rather than one-off processes. These
functions demand storage and presentation of information at a variety of scales. Such
activities will be best served if the management systems underpinning them offer
dynamic data management, the ability to facilitate customised presentation and display
by the user, and an ability to combine, aggregate, integrate and analyse disparate data in
a variety of different “value added” ways. These facilities will enable decisions to be