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https://hdl.handle.net/2440/36307
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Type: | Journal article |
Title: | A flexible true plurigaussian code for spatial facies simulations |
Author: | Xu, C. Dowd, P. Mardia, K. Fowell, R. |
Citation: | Computers and Geosciences, 2006; 32(10):1629-1645 |
Publisher: | Pergamon-Elsevier Science Ltd |
Issue Date: | 2006 |
ISSN: | 0098-3004 |
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 |
DOI: | 10.1016/j.cageo.2006.03.002 |
Description (link): | http://www.sciencedirect.com/science/journal/00983004 |
Published version: | http://dx.doi.org/10.1016/j.cageo.2006.03.002 |
Appears in Collections: | Aurora harvest 6 Civil and Environmental Engineering publications |
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