Record Details

Data configurations and the cokriging system: Simplification by screen effects

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Data configurations and the cokriging system: Simplification by screen effects
 
Creator SUBRAMANYAM, A
PANDALAI, HS
 
Subject markov-models
simple cokriging
data configuration
screen effect
cokriging neighbourhood
markov models
 
Description Large cokriging systems arise in many situations and are difficult to handle in practice. Simplifications such as simple kriging, strictly collocated and multicollocated cokriging are often used and models under which such simplifications are, in fact, equivalent to cokriging have recently received attention. In this paper, a two-dimensional second-order stationary random process with known mean is considered and the redundancy of certain components of the data at certain locations vis-a-vis the solution to the simple cokriging system is examined. Conditions for the simple cokriging weights of these components at these locations are set to zero. The conditions generalise the notion of the autokrigeability coefficient and can, in principle, be applied to any data configuration. In specific sampling situations such as the isotopic and certain heterotropic configurations, models under which simple kriging, strictly collocated, multicollocated and dislocated cokriging are equivalent to simple cokriging are readily identified and results already available in the literature are obtained. These are readily identified and the results are already available in the literature. The advantage of the approach presented here is that it can be applied to any data configuration for analysis of permissible simplifications in simple cokriging.
 
Publisher SPRINGER HEIDELBERG
 
Date 2011-08-30T04:24:17Z
2011-12-26T12:58:45Z
2011-12-27T05:49:15Z
2011-08-30T04:24:17Z
2011-12-26T12:58:45Z
2011-12-27T05:49:15Z
2008
 
Type Article
 
Identifier MATHEMATICAL GEOSCIENCES, 40(4), 425-443
1874-8961
http://dx.doi.org/10.1007/s11004-008-9153-9
http://dspace.library.iitb.ac.in/xmlui/handle/10054/12192
http://hdl.handle.net/10054/12192
 
Language en