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Book Chapter

A New Method for Handling the Nugget Effect in Kriging

By
P. Krivoruchko
P. Krivoruchko
Environmental Systems Research Institute Redlands, California, U.S.A.
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A. Gribov
A. Gribov
Environmental Systems Research Institute Redlands, California, U.S.A.
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J. M. Ver Hoef
J. M. Ver Hoef
Alaska Department of Fish and Game Fairbanks, Alaska, U.S.A.
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Published:
January 01, 2006

Abstract

This chapter discusses methods for estimating the nugget in semivariogram models. Commonly used exact and filtered kriging methods are compared with an alternative method, which predicts a new value at the sampled location. Using the alternative method, estimation at a location where data have been collected involves predicting the smooth underlying value plus a new observation from measurement error. This is exactly what is necessary for validation and crossvalidation diagnostics. Three examples of using new value kriging are presented that involve comparison of simulated results, porosity estimation for the North Cowden unit in west Texas, and analysis of radiocesium soil-contamination data collected in Belarus after the Chernobyl accident.

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Contents

AAPG Computer Applications in Geology

Stochastic Modeling and Geostatistics: Principles, Methods, and Case Studies, Volume II

T. C. Coburn
T. C. Coburn
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J. M. Yarus
J. M. Yarus
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R. L. Chambers
R. L. Chambers
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American Association of Petroleum Geologists
Volume
5
ISBN electronic:
9781629810362
Publication date:
January 01, 2006

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