Determination of anisotropy of spatial correlation structure in a three-dimensional permeability field accompanied by shallow faults

2002 ◽  
Vol 38 (8) ◽  
pp. 35-1-35-14 ◽  
Author(s):  
Shinji Nakaya ◽  
Taiyoh Yohmei ◽  
Akihisa Koike ◽  
Tetsuhiro Hirayama ◽  
Toshiaki Yoden ◽  
...  
Keyword(s):  
Spatial Correlation ◽  
Three Dimensional ◽  
Correlation Structure ◽  
Spatial Correlation Structure ◽  
Permeability Field

Sky-Cover Correlation within a Sky Dome

1991 ◽  
Vol 30 (7) ◽  
pp. 1037-1039 ◽  
Author(s):  
James H. Willand ◽  
Julia Steeves
Keyword(s):  
Spatial Correlation ◽  
Cloud Cover ◽  
Correlation Structure ◽  
National Weather Service ◽  
Structural Pattern ◽  
The Earth ◽  
Spatial Correlation Structure ◽  
Sky Conditions ◽  
Very High ◽  
Weather Service

Abstract A new utility for the use of whole-sky photographs has been developed through an effort to discern the structural pattern of correlations of cloud cover within an observer's sky dome. The photographs were taken from the National Weather Service observing site at Columbia, Missouri, and were originally assembled for the purpose of estimating probabilities of cloud-free lines of sight from the earth through the atmosphere. The procedure for determining the spatial correlation structure of sky cover within the sky dome starts with the defining and tabulating of a dichotomous sky-cover condition over small sectors of the sky dome, and then calculating the correlation associated with the tabulated sky conditions in each sector. This note shows that correlation of sky-cover conditions over a sky dome are very high, and that they are less degrading in the winter than in the summer. The results of this study can be applied to the estimation of cloud-free lines of sight to multiple satellites.

Identification of 2D Boundaries from 3D Atom Probe Data, and Spatial Correlation of Atomic Distributions with Interfaces

1999 ◽  
Vol 578 ◽  
Author(s):  
O.C. Hellman ◽  
J.A. Vandenbroucke ◽  
J. Rüsing ◽  
D. Isheim ◽  
D.N. Seidman
Keyword(s):  
Quantitative Determination ◽  
Spatial Correlation ◽  
Three Dimensional ◽  
Atom Probe ◽  
Real Space ◽  
Interfacial Segregation ◽  
Crystallographic Defects ◽  
20 Nm ◽  
Interface Geometry

AbstractThe Three Dimensional Atom Probe produces a real space map of the elemental identities and positions of atoms field-evaporated from a sharply pointed specimen. The analyzed volume is on the order of 20 nm × 20 nm × 100 nm. This is large enough to enclose microstructural features such as grain- or heterophase boundaries. Correlation of the measured atomic positions with such features results in an atom-by-atom description of the chemical environment of these crystallographic defects. We describe here a method for identifying these interfaces and profiling the composition in the vicinity of the interfaces without any assumptions about the interface geometry. This approach is applied to quantitative determination of interfacial segregation of Ag at a MgO/Cu(Ag) heterophase interface. We discuss the implications of our technique with respect to classical treatments of segregation at interfaces.

scholarly journals SPATIAL CORRELATION STRUCTURE OF PRECIPITATION

2002 ◽  
Vol 46 ◽  
pp. 127-132 ◽  
Author(s):  
Yasuhisa KUZUHA ◽  
Kunio TOMOSUGI ◽  
Tokuo KISHII
Keyword(s):  
Spatial Correlation ◽  
Correlation Structure ◽  
Spatial Correlation Structure
Sign in / Sign up

Export Citation Format

Share Document