Modelling spatially and temporally distributed phenomena: new methods and tools for GRASS GIS |
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| Authors: | HELENA MITASOVA LUBOS MITAS WILLIAM M BROWN DAVID P GERDES IRINA KOSINOVSKY TERRY BAKER |
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| Institution: | 1. US army Constructions Engineering Research Laboratories , Po Box 9005, Champaign, IL 61826-9005;2. Department of Geography , University of Illinois at Urbana-Champaign , Urbana, IL 61801, USA E-mail: helena@gis.uiuc.edu;3. National Center for Supercomputing Applications University of Illinois at Urbana-Champaign , Urbana, IL 61801, USA;4. US Army Construction Engineering Research Laboratories , PO Box 9005, Champaign, IL 61826-9005, USA |
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| Abstract: | Abstract The concept of GRASS (Geographic Resources Analysis Support System) as an open system has created a favourable environment for integration of process based modelling and GIS. To support this integration a new generation of tools is being developed in the following areas: (a) interpolation from multidimensional scattered point data, (b) analysis of surfaces and hypersurfaces, (c) modelling of spatial processes and, (d) 3D dynamic visualization. Examples of two applications are given-spatial and temporal modelling of erosion and deposition, and multivariate interpolation and visualization of nitrogen concentrations in the Chesapeake Bay. |
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