© 2017 by Luleå University of Technology

Uppsala University

The department of Earth Science at Uppsala University are involved in a wide range of applied and basic research where 4D/3D modelling and visualization is essential for understanding the structural settings and subsurface characteristics. Projects range from mining exploration, site characterization for underground infrastructure projects and time-lapse monitoring of CO2 sequestration, to investigating faults and areas prone to natural hazard, mapping stratigraphic sequences and marine structures in the Baltic Sea as well as understanding the architecture of volcanoes and the tectonic evolution of mountain belts. Modelling, visualization and interpretation of geophysical data (e.g. seismic, gravity and magnetic, electrical resistivity, EM, GPR and well-logs) and geological information (e.g. structural and compositional) data in 3D and 4D is a valuable tool to several multidisciplinary groups across the department.​

3D/VR hardware:

In 2015, an Augmented Reality Sandbox was designed and built to visualize structural mapping and dynamic processes on a topographic surface. At present this is used for educational purposes and public outreach but has the potential of being developed further into incorporating more advanced 3D modeling and visualization capabilities.

Used 3D/4D modelling software:

- GoCAD (Paradigm) with Mira Geoscience Mining Suite:

Used for 3D modelling, visualization and interpretation of geological and geophysical data.

- OpendTect (dGB Earth Sciences):

Used for 3D modelling, visualization and interpretation of geological and geophysical data.

- Move (Midland Valley):

Used for 3D modelling, visualization and interpretation of geological and geophysical data.

- ModelVision (Tensor Research):

Used for 3D modelling and inversion of geophysical data.

- ParaView (Kitware):

Used for 3D visualization of geophysical data.

- Micmac (IGN & ENSG):

Used for photogrammetry and structural 3D reconstruction.

Recent/ongoing projects:

- The Skellefte Ore District – 3D inversion and modeling of Magnetotelluric data, integrated with reflection seismic data and geological information for understanding regional structures and tectonic setting of the Skellefte Ore district.​​

- The Vinsta access ramp, Stockholm Bypass – seismic reflection imaging and travel-time tomography are used to investigate the depth to bedrock and subsurface rock quality where the Vinsta access ramp meets the Stockholm Bypass (“Förbifart Stockholm”), an 8 lane underground highway.

- The Bollnäs Fault – Multidisciplinary study of the major Post-glacial fault that cuts through Bollnäs to unravel the faults subsurface geometry and its possible association with an earlier buried deformation zone. Methods used include gravity and magnetic measurements, seismic reflection imaging and travel-time tomography, electrical resistivity tomography, radio-magnetotellurics, GPR and Lidar, all integrated in the end.  

- Lilla Edet – Multidisciplinary geophysical investigation of an area that is prone to hazardous landslides of quick clay. Seismic reflection imaging and travel-time tomography, magnetics, gravity, GPR, EM and electrical resistivity are integrated with shallow drilling and logging to shed light on the hazardous phenomena.

- Collisional Orogeny in the Scandinavian Caledonides – Currently ongoing project with a main focus on questions concerning mountain formation in a collisional orogeny. Scientific drilling of two 2.5 km deep fully cored boreholes provide a continuous core and high resolution well-log data which are integrated with regional reflection seismic, magnetotelluric, magnetic and gravity data and geological investigations.

- Ardnamurchan Igneous Complex – defining the architecture of subvolcanic structures using structural geology with support from gravity data, ultimately developing a new understanding of cone-sheet and ring-dyke emplacement in igneous complexes.

Project: The Skellefte Ore District - 3D inversion and modeling of magnetotelluric data.

Project: The Vinsta access ramp, Stockholm Bypass – seismic reflection imaging and travel-time tomography.

Project: Geophysical investigation of lhazardous landslide area at Lilla Edet.

Demonstration of the Augmented Reality Sandbox at Uppsala University.

Contact:

Dr. Peter Hedin

Uppsala University

Sweden

peter.hedin[AT]geo.uu.se