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Mathematical Geology

, Volume 18, Issue 6, pp 529–537 | Cite as

Determination of support in soil sampling

  • Thomas H. Starks
Articles

Abstract

Short-range variation of measurements of a soil characteristic is a function of the support (i.e., size, shape, and orientation of the physical sample taken at a sample point) of the soil samples. This short-range variance often shows up as a substantial component of the “nugget effect” in experimental semivariograms or estimated generalized covariance functions. Proper choice of support may substantially reduce short-range variance (or nugget) of measurements made at sample points and thereby reduce estimation variance in point or block kriging based on these measurements. Appropriate variance formulas and an example are given for determination of support when support is an array of vertical cores (or bucket auger samples) of equal depth and diameter.

Key words

geostatistics kriging nugget effect soil sampling support 

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References

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Copyright information

© Plenum Publishing Corporation 1986

Authors and Affiliations

  • Thomas H. Starks
    • 1
  1. 1.Environmental Research CenterUniversity of NevadaLas Vegas

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