The Handling of Hazard Data on a National Scale: A Case Study from the British Geological Survey |
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| Authors: | Katherine R Royse |
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| Institution: | (1) British Geological Survey, Keyworth, Nottingham, NG12 5ED, UK |
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| Abstract: | This paper reviews how hazard data and geological map data have been combined by the British Geological Survey (BGS) to produce
a set of GIS-based national-scale hazard susceptibility maps for the UK. This work has been carried out over the last 9 years
and as such reflects the combined outputs of a large number of researchers at BGS. The paper details the inception of these
datasets from the development of the seamless digital geological map in 2001 through to the deterministic 2D hazard models
produced today. These datasets currently include landslides, shrink-swell, soluble rocks, compressible and collapsible deposits,
groundwater flooding, geological indicators of flooding, radon potential and potentially harmful elements in soil. These models
have been created using a combination of expert knowledge (from both within BGS and from outside bodies such as the Health
Protection Agency), national databases (which contain data collected over the past 175 years), multi-criteria analysis within
geographical information systems and a flexible rule-based approach for each individual geohazard. By using GIS in this way,
it has been possible to model the distribution and degree of geohazards across the whole of Britain. |
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