GeoUrban Dublin Project

Geology Matters No 8 

Introduction Director's Discourse The Role of Geoscience in Society World Geoscience Conference International Co-operation and Agreements Griffith Geoscience Research Awards 2008 - International Year of Planet Earth GeoUrban Dublin Project New Burren Map IYPE/Du Noyer Competition Launch of INFOMAR Website and Product Range Mapping Potential Landslide Hazards Groundwater Vulnerability Mapping An Intern's Life

GeoUrban Dublin Project

Ray Scanlon

The NDP-funded GeoUrban Dublin Project is a cross- sectional initiative within the GSI which aims to bring the full wealth of the organisation’s urban datasets to the public. In particular the project will step beyond the traditional two dimensional approach of map production and tackle 3D modelling of the urban subsurface.

The main driver behind the project is that accurate knowledge of geology in the third dimension is a critical factor in construction and major infrastructure projects. This knowledge saves both time and money in the planning stages.

The pilot phase of GeoUrban Dublin is in full swing with new bedrock, quaternary and geotechnical data collection and mapping modules as well as modules in 3D modelling and 2D web mapping outputs.

Outputs of the pilot phase will include;

  • 1:50,000 scale bedrock and quaternary maps of Dublin (digital and paper versions)
  • Revised depth to bedrock andRockhead OD maps of Dublin
  • Regional 3D Bedrock model
  • Small scale quaternary and geotechnical 3D models within the urban area
  • A 2D web mapping portal for online custom map production and data download
  • 3D PDF file formats for model distribution
  • Pilot 3D web portal for visualisation of datasets.

Over the next five years it is planned to roll out the project to other urban areas, with Cork, Galway and Waterford already in the planning stages.

3D model
Figure 1. A preliminary 3D model of part of the Dublin Port area in Adobe Acrobat Format. A vertical exaggeration of a factor of ten has been applied. This test model contains four layers, bedrock in blue, glacial till in green, glacio-fluvial sands in yellow and recent sediments in grey

Interactive map - Dublin
Figure 2. Snap shot of interactive online map viewer showing contours for depth to bedrock in Dublin city centre