VARIOGRAMS WITH ZONAL ANISOTROPIES AND NONINVERTIBLE KRIGING SYSTEMS

被引：38

作者：

MYERS, DE ^{[1
]}

JOURNEL, A ^{[1
]}

机构：

[1] STANFORD UNIV,DEPT APPL EARTH SCI,STANFORD,CA 94305

来源：

MATHEMATICAL GEOLOGY | 1990年 / 22卷 / 07期

关键词：

anisotropies; invertibility; positive definiteness; variogram;

D O I：

10.1007/BF00890662

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Zonal anisotropies are usually simply defined as those that are not geometric (i.e., that cannot be removed by an affine transformation). Such anisotropies have often been associated with zonations and models have been proposed to reflect that association. It is shown by example that such models can lead to noninvertible coefficient matrices in kriging systems, because the models are only (conditionally) semidefinite instead of positive definite. The relationship to the construction used in turning bands algorithm and also to spatial-temporal models is discussed. © 1990 International Association for Mathematical Geology.

引用

页码：779 / 785

页数：7