Application of Ordinary Kriging for In Situ Site Characterization

Rojimol, J. and Phanindra, K. B. V. N. and Umashankar, B. (2021) Application of Ordinary Kriging for In Situ Site Characterization. Lecture Notes in Civil Engineering, 137. pp. 551-563. ISSN 2366-2557

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Application of geostatistical techniques for in situ site characterization has received much attention in the last couple of decades. Kriging is one of the popular and accurate geostatistical techniques for the interpolation of spatially varied random variables. This study considers the development of a generalized ordinary kriging algorithm for use with site characterization. Ordinary kriging with a constant mean of stationary variable was applied to generate contour map and the error variance map to infer on the spatial variation of the parameter under consideration. In this study, the clay content parameter from a refinery project area in Orissa is interpolated using ordinary kriging technique. A generalized MATLAB code is developed to select the best fit semi-variogram for the sample data, to apply ordinary kriging technique, and to generate the surface profile. The spatial distribution of clay content values across the region is studied using prediction surface, and accuracy is checked using error variance profiles. Results of the analysis are also compared with simulation using ArcGIS based geostatistical analyst® and cross-validated using statistical parameters. Our results conclude that the proposed algorithm can be extended to predict other in situ soil properties in the field of geotechnical engineering.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Article
Uncontrolled Keywords: Ordinary kriging; Semi-variogram; Site characterization
Subjects: Civil Engineering
Divisions: Department of Civil Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 16 Jul 2021 08:02
Last Modified: 08 Mar 2022 11:51
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