OR/17/003 Introduction
| Terrington, R, Thorpe, S and Jirner, E. 2017. Enköping Esker pilot study - workflow for data integration and publishing of 3D geological outputs. British Geological Survey Internal Report, OR/17/003. |
BGS and Swedish Geological Survey (SGU) collaborated within this project to construct a geological model of an esker in Enköping, southern Sweden. An esker is a long sinuous ridge of predominantly coarse-grained sorted sediments that were deposited by glacial meltwater within ice-walled channels which flowed either beneath or within the glacier (Warren & Ashley, 1994[1]). Eskers are common glacial landforms in Sweden and other formerly glaciated areas, including elsewhere in Scandinavia like Finland, and are important local sources of groundwater (Kløve et al., 2012[2]). The aim of the project was to conceptualise the geology to aid planners, decision makers, politicians and the public to better understand the subsurface conditions for the protection and abstraction of groundwater. The BGS role in the project was to provide advice and support with regards to:
- Data input into the geological
- The geological model construction workflow
- Data output, deployment and publishing of the model
- Scope out and deliver the model in Groundhog Desktop, 3D PDF and Web GIS
The role of SGU was to construct the geological model and develop methodologies based on those advised by the BGS for constructing further geological models for eskers using a cross-section based approach for constructing 3D geological objects (Kessler et al, 2009[3]). The model was to mirror the geological model constructed in Uppsala (Jirner et al, 2016[4]) using the SubsurfaceViewer software (INSIGHT).
References
- ↑ Warren, W P, and Ashley, G. 1994. Origins of ice-contact stratified ridges (eskers) of Ireland. Journal of Sedimentary Research, 64, 433–449.
- ↑ Kløve, B, Ala-aho, P, Okkonen, J, and Rossi, P. 2012. Possible effects of climate change on hydrogeological systems: results from research on Esker aquifers in northern Finland. In: Treidel, H, Martin-Bordes, J L, and Gurdak, J J. (eds). Climate Change Effects on Groundwater Resources — a Global Synthesis of Findings and Recommendations, Taylor & Francis, London. pp.305–318.
- ↑ Kessler, H, Mathers, S, and Sobisch, H G. 2009. The capture and dissemination of integrated 3D geospatial knowledge at the British Geological Survey using GSI3D software and methodology. Computers & Geosciences, 35(6), pp.1311–1321.
- ↑ Jirner, E, Johansson, P-O, McConnachie, D, Djurberg, H, McCleaf, P, Hummel, A, Ahlgren, S, Rodhe, L, and Mikko, H. Jordlagermodellering i 3D — exempel från Uppsalaåsen med hydrogeologisk tillämpning SGU- rapport 2016:19.