If subsequent results within the study and across other studies are not out of trend, then the initial analytical alert result may be an isolated incident that requires no further investigation.
This article distinguishes two different sedimentary environments of Fuyu and Yang-dachengzi oil-bearing series in Sanzhao depression with geological analytical method of trend surface.
应用趋势面地质分析方法，区别出三肇拗陷扶余、杨大城子油层两种不同的沉积环境。
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General spatial analytical method include geostatistics, spatial autocorrelation, fractal dimension, trend surface analysis, scale variance analysis.