semivariograma
[se.mi.va.ri.o.ˈɡra.ma]
nounmasculinepl: semivariogramas
semivariogram
1. A statistical tool used in geostatistics to measure spatial correlation and variability of data points as a function of distance; half the average squared difference between paired data values separated by a given distance lag
The semivariogram revealed that soil properties were highly correlated at short distances but became independent at greater distances.
O semivariograma revelou que as propriedades do solo eram altamente correlacionadas em distâncias curtas, mas se tornavam independentes em distâncias maiores.
2. A graphical representation showing the relationship between semivariance and lag distance in spatial data analysis
The researcher plotted the semivariogram to analyze the spatial structure of mineral concentrations in the ore deposit.
O pesquisador plotou o semivariograma para analisar a estrutura espacial das concentrações minerais no depósito de minério.
This is a highly technical and specialized term used primarily in scientific and academic contexts in both Brazil and Portugal. It is part of the geostatistical vocabulary that has been adopted internationally without significant regional variation. The term is essential in fields such as mining engineering, environmental assessment, soil science, and spatial statistics.
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