Visualizing a spherical geological discrete element model of fault evolution

S. M. Longshaw, M. J. Turner, E. Finch

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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Abstract

Discrete Element Modelling (DEM) is a numerical technique that uses a system of interacting discrete bodies to simulate the movement of material being exposed to external forces. This technique is often used to simulate granular systems; however by adding further elements that inter-connect the bodies, it can be used to simulate the deformation of a large volume of material. This method has precedent for use in the Earth Sciences and recently, with the increase of available computing power, it has been put to good use simulating the evolution of extensional faults in large scale crustal experiments that involve over half a million individual spherical bodies. An interactive environment that provides high quality rendering is presented, showing that interactivity is key in allowing the intelligent application of visualization methods such as colour-mapping and visibility thresholds in order to extract fault information from a geological DEM. It is also shown that glyph representation alone is not sufficient to provide full insight into the complex three dimensional geometries of the faults found within the model. To overcome this, a novel use of the MetaBall method is described, which results in implicit surface representations of sphere sub-sets. The surfaces produced are shown to provide greater insight into the faults found within the data but also raise questions as to their meaning. © The Eurographics Association 2012.
Original languageEnglish
Title of host publicationTheory and Practice of Computer Graphics 2012, TPCG 2012 - Eurographics UK Chapter Proceedings|Theory Pract. Comput. Graph., TPCG - Eurographics UK Chapter Proc.
PublisherEurographics Association
Pages77-84
Number of pages7
ISBN (Print)9783905673937
DOIs
Publication statusPublished - 2012
Event10th Conference on Theory and Practice of Computer Graphics 2012, TPCG 2012 - Rutherford
Duration: 1 Jul 2012 → …
http://diglib.eg.org/EG/DL/LocalChapterEvents/TPCG/TPCG12/077-084.pdf

Conference

Conference10th Conference on Theory and Practice of Computer Graphics 2012, TPCG 2012
CityRutherford
Period1/07/12 → …
Internet address

Keywords

  • DEM
  • Visualization
  • MetaBall
  • Implicit Surface
  • Fault Modelling

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