INTRINSICALLY STATIONARY VARIOGRAMS IN SPACE AND TIME

被引:7
|
作者
Ma, C. [1 ]
机构
[1] Wichita State Univ, Dept Math & Stat, Wichita, KS 67260 USA
基金
美国国家科学基金会;
关键词
Bernstein function; covariance function; Fourier transform; isotropy; long-range dependence; negative definite; power-law; stationary; COVARIANCE; MODELS; FIELDS;
D O I
10.1137/S0040585X97983481
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
This paper addresses the permissible problem of the product of two intrinsically stationary variograms and that of a power function of an intrinsically stationary variogram in space and time. It results in several new classes of space-time variograms, as well as power-law and other long-range dependent covariance models. In particular, the product of two isotropic variograms that are formulated in terms of Bernstein functions is shown to be a valid variogram, and the largest permissible power is determined for the power of an intrinsically stationary variogram that is constructed via the Bernstein function.
引用
收藏
页码:145 / U158
页数:11
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