HYDRO_GEN: A spatially distributed random field generator for correlated properties

被引:116
作者
Bellin, A [1 ]
Rubin, Y [1 ]
机构
[1] UNIV CALIF BERKELEY,DEPT CIVIL ENGN,BERKELEY,CA 94720
来源
STOCHASTIC HYDROLOGY AND HYDRAULICS | 1996年 / 10卷 / 04期
关键词
random fields; stochastic processes; fractals;
D O I
10.1007/BF01581869
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This paper describes a new method for generating spatially-correlated random fields. Such fields are often encountered in hydrology and hydrogeology and in the earth sciences. The method is based on two observations: (i) spatially distributed attributes usually display a stationary correlation structure, and (ii) the screening effect of measurements leads to the sufficiency of a small search neighborhood when it comes to projecting measurements and data in space. The algorithm which was developed based on these principles is called HYDRO_GEN, and its features and properties are discussed in depth. HYDRO_GEN is found to be accurate and extremely fast. It is also versatile: it can simulate fields of different nature, starting from weakly stationary fields with a prescribed covariance and ending with fractal fields. The simulated fields can display statistical isotropy or anisotropy.
引用
收藏
页码:253 / 278
页数:26
相关论文
共 44 条
[1]  
ABABOU R, 1989, TRANSPORT POROUS MED, V4, P549, DOI 10.1007/BF00223627
[2]  
[Anonymous], 1976, TIME SERIES ANAL
[3]  
[Anonymous], 1989, FLOW TRANSPORT POROU, DOI DOI 10.1007/978-3-642-75015-1
[4]  
BERGLAND GD, 1968, MATH COMPUT, V22, P275
[5]  
Bras R. L., 1985, RANDOM FUNCTIONS HYD
[6]   MULTISCALE SOURCES OF SPATIAL VARIATION IN SOIL .1. THE APPLICATION OF FRACTAL CONCEPTS TO NESTED LEVELS OF SOIL VARIATION [J].
BURROUGH, PA .
JOURNAL OF SOIL SCIENCE, 1983, 34 (03) :577-597
[7]  
de Marsily G., 1986, QUANTITATIVE HYDROGE
[8]  
DONGARRA JJ, 1979, LINPACK USERS GUIDE
[9]   OPTIMUM DENSITY OF RAINFALL NETWORKS [J].
EAGLESON, PS .
WATER RESOURCES RESEARCH, 1967, 3 (04) :1021-&
[10]  
Feder J., 1988, FRACTALS PLENUM