Modeling and exploring multivariate spatial variation: A test procedure for isotropy of multivariate spatial data

In this paper an exploratory technique based on the diagonalization of cross-variogram matrices is described. Through the definition of a model for the analysis and simulation of multivariate spatial data. a test procedure for the assumption of isotropy of multivariate spatial data is proposed. Applications to simulated and real data are reported. (C) 2001 Academic Press