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Determining spatial anisotropy using geographic information system

In: Geografický časopis, vol. 48, no. 1
Peter P. Siska
Detaily:
Rok, strany: 1996, 63 - 71
Jazyk: eng
Kľúčové slová:
spatial anisotropy, spatial isotropy, geographic information system
Typ dokumentu: článok/journal
O článku:
Barth related data are often autocorrelated. The degree of autocorrelation of spatial continuity varies with geographic direction. If the spatial dependence is clearly continuous in one parti-cular direction, then anisotropy is present in a data set. Anisotropy reveals the spatial structure of studied phenomena such as air pollution, mineralization, insect behaviour, etc. The purpose of this article is to develop an efficient, and relatively easy-to use method for determining and measuring spatial anisotropy and isotropy by utilizing the Arc/lnfo Geographic Information System. Procedures and methods are tested on the Rio Grande data set. The axes of anisotropy are measured anis, the index of anisotropy is being calculated, and the directions of spatial continuity are expressed in degrees of azimuth. Prevailing variogram models, spherical and gaussian, have been determined and graphed without leaving the GIS environment. Practical applications of this method are in mining, optimal sampling strategies, variogram analysis, in the search window strategies, insect outbreaks mapping, underground or surface water pollu-tion monitoring, environmental impact assessment and in many other natural resource management oriented studies.
Ako citovať:
ISO 690:
Siska, P. 1996. Determining spatial anisotropy using geographic information system. In Geografický časopis, vol. 48, no.1, pp. 63-71. 0016-7193.

APA:
Siska, P. (1996). Determining spatial anisotropy using geographic information system. Geografický časopis, 48(1), 63-71. 0016-7193.
O vydaní:
Vydavateľ: Geografický ústav SAV/Institute of Geography of the Slovak Academy of Sciences