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Open source software as a tool for multidimensional geological and glaciological modeling (two examples from Polish Tatra Mts.)

Authors: 
Jacek CHEŁMIŃSKI, Michał MAKOS, Łukasz NOWACKI, Jacek RUBINKIEWICZ, Ewa SZYNKARUK, Maciej TOMASZCZYK
Citation: 
International Symposium Cascadoss, Warsaw, 2008
Abstract: 

Nowadays, multidimentional modeling and visualisation of geological data permit fundamentaladvances in Earth Sciences. However, as numerous commercial applications devoted to suchmodeling  are  either  expensive  or  unable  to  manipulate  all  available  data,    open-sourcesoftware is a noteworthy alternative. Using these software though requires combining several applications,  applets  and libraries  at  different  stages  of  data  processing  and  visualisation (e.g.,  GRASS  GIS,  R, MeshLab,  Paraview).  The  most  advanced  of  these  applications  –  the  GRASS  GIS  –  except  standard GIS  (2D,  2,5D)  funcionalities  permits  manipulation  of true 3D and 4D data in both raster and vector formats (e.g., as raster3D-voxel, Vector3D-TIN,mesh, face). These allow construction of 3D geologic models (geologic horizons, solids, faults,thrusts, etc.), based on 2D cartographic data and 3D well and geophysical data. Visualisationof  such  models  is  easiestin  Paraview  (www.paraview.org),  which  moreover  contains  varioustools  for  modification  of data  according  to  the  end-user's  needs.  MeshLab  is  another  data modification  and  visualisation  program  purposed  to  work  with  meshes.  R  is  softwareenvironment for statistical computing, some modules are very useful for geostatistic. There isno excange data problem between programs becouse, usually the OpenSource programs usestandard data formats.