1. Soil water content interpolation using spatio-temporal kriging with external drift
- Author
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Gerard B. M. Heuvelink, J.J.J.C. Snepvangers, Johan Alexander Huisman, and Earth Surface Science (IBED, FNWI)
- Subjects
bodemwatergehalte ,design ,Soil Science ,Soil science ,netherlands ,Geostatistics ,infiltration ,Leerstoelgroep Landdynamiek ,nederland ,infiltratie ,geostatistiek ,Kriging ,Land Dynamics ,geostatistics ,Time domain ,Reflectometry ,Water content ,time ,Hydrology ,model ,variability ,soil water content ,space ,PE&RC ,Infiltration (hydrology) ,Soil water ,Environmental science ,Surface water - Abstract
In this study, two techniques for spatio-temporal (ST) kriging of soil water content are compared. The first technique, spatio-temporal ordinary kriging, is the simplest of the two, and uses only information about soil water content. The second technique, spatio-temporal kriging with external drift, uses also the relationship between soil water content and net-precipitation to aid the interpolation. It is shown that the behaviour of the soil water content predictions is physically more realistic when using spatio-temporal kriging with external drift. Also, the prediction uncertainties are slightly smaller. The data used in this study consist of Time Domain Reflectometry (TDR) measurements from a 30-day irrigation experiment on a 60 x 60-m grassland in the Netherlands. (C) 2002 Elsevier Science B.V. All rights reserved. more...
- Published
- 2003
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