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Adelaide Research and Scholarship
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Schools and Disciplines
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School of Civil, Environmental and Mining Engineering
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Civil and Environmental Engineering Publications
Permanent link to this item:
http://hdl.handle.net/2440/36307
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| Type: | Article |
| Title: | A flexible true plurigaussian code for spatial facies simulations |
| Author: | Xu, Chaoshui
Dowd, Peter Alan
Mardia, K. V.
Fowell, Robert J. |
| Citation: | Computers and Geosciences, 2006; 32 (10):1629-1645 |
| Publisher: | Elsevier |
| Issue Date: | 2006 |
| ISSN: | 0098-3004 |
| School/Discipline: | School of Civil, Environmental and Mining Engineering
School of Engineering, Computer & Mathematical Sciences |
| Abstract: | The current forms of plurigaussian simulation have serious limitations for applications to large numbers of geological facies, or units, which have complex contact relations. In this paper the authors present a true plurigaussian simulation (PGS) method, which can be applied in a simple way to any number of geological facies by using any number of Gaussians. A recursive technique is used for multi-dimensional integration of the Gaussian functions, which forms the major part of the PGS computation. A binary, dynamic contact matrix (DCM) is used to specify the contact relations among the facies; this method has proved to be simple, flexible and capable of dealing with general, complex contact relations. A method for incorporating into PGS multivariate correlations among any number of random variables is also included. A simulated example is used to demonstrate the application of the generalised PGS. This example shows that PGS is more robust to under-sampling than traditional direct indicator simulation. |
| Keywords: | geostatistical simulation; plurigaussian simulation; spatial facieses simulation; spatial modelling; multivariate correlation; contact relations; dynamic contact matrix; recursive integration |
| RMID: | 0020061402 |
| DOI: | 10.1016/j.cageo.2006.03.002 |
| Description (link): | http://www.sciencedirect.com/science/journal/00983004 |
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| Appears in Collections: | Civil and Environmental Engineering Publications
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