Hello Michael!
What you are describing is kriging in the presence of a drift,
e.g. kriging of a (single) nonstationary RV. You may proceed as
described in your email or use universal kriging (UK) for that.
External drift refers to a second variable which may be used
in order to improve estimation e.g.
1st variable: rainfall data measured at a limited number of stations and
2nd variable: digital elevation data which must be known at each
grid point to be estimated.
See Goovaerts' paper for this example:
http://www.geovista.psu.edu/sites/geocomp99/Gc99/023/gc_023.htm
For UK see any standard textbook on geostats.
Regards,
Heinz Burger
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Visit IAMG2002: http://www.fu-berlin.de/iamg2002
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Dr. Heinz Burger
Freie Universitaet Berlin
- Geoinformatik -
Malteserstr. 74-100
12249 BERLIN, Germany
Tel. (49) 30-838-70561 Fax: (49) 30-838-70723
mailto: [EMAIL PROTECTED]
Web-Seite: http://userpage.fu-berlin.de/~hburger/hb
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