Specific Priority Subject 2.4 Summary Report - Supporting sustainable and resilient management of extreme rainfall

[摘要] The PanGeo service has been designed with the original project aims, user requirements and technical requirements in mind. The PanGeo service will create an attributed, spatially referenced vector polygon dataset outlining all areas of ground instability for 52 European towns. INSPIRE compliant attributes will provide the reason for the instability, its area and the geologists confidence in their interpretation. The supporting Geohazard Description Document will be available as both a standalone document and the relevant section will be hyperlinked to the Ground Stability Layer polygon displayed in the portal. Along with providing a geological background to the PanGeo town the Geohazard Description will give detailed geological interpretation and evidence for the area of instability and provide information on how the instability was recognised and mapped. The PanGeo interpretation will be carried out by the National Geological Survey for the country for which the town resides. The inputs to the interpretation are; satellite radar derived data on ground motion, ground motions observed with other surveying techniques, geological data and models and ancillary data. The satellite radar derived ground motion data will be delivered to the geological surveys by the PSIPs within in the PanGeo Production Pack. Two types of ground instability will be recognised; observed and potential. Observed instabilities are those observed on ground motion data or through geological field campaigns. Potential instabilities are those areas that the geologist believes may be subject to instabilities given their knowledge of the area or the results of geological modelling. One of eighteen geohazards is assigned to each area of ground instability; geohazards are grouped into four categories for display on the portal. Once the Geological Survey has completed the GSL and GHD they will be validated by the British Geological Survey before being made available to the PanGeo portal. In the first instance the GSL will be submitted to an online validating tool which will carry out automated topological data checks of the vector data and attributes. Once passed the GSL is sent to BGS who will carry out manual checks of the GSL and GHD to ensure they meet the specifications. Once validated the Geological Survey will make the GSL and GDH available on their IT servers for harvesting by the PanGeo portal. The display of the GSL on the portal will depend on the viewing scale; at the European scale PanGeo towns will be highlighted, at the regional scale a graphic showing the number of hazards affecting an area will be displayed. At the local scale the GSL polygons will be displayed according to the geohazard category, the boundary line will distinguish potential and observed hazards. The user can also choose to integrate the GSL with the Urban Atlas; the GSL polygons will highlight those Urban Atlas land cover types affected by hazards

[发布机构] NERC - Centre for Ecology & Hydrology

[学科分类] 地表过程