Factor Analysis in Physical Sciences
Factor analysis has also been widely used in physical sciences such as geochemistry, ecology, and hydrochemistry.
In groundwater quality management, it is important to relate the spatial distribution of different chemical parameters to different possible sources, which have different chemical signatures. For example, a sulfide mine is likely to be associated with high levels of acidity, dissolved sulfates and transition metals. These signatures can be identified as factors through R-mode factor analysis, and the location of possible sources can be suggested by contouring the factor scores.
In geochemistry, different factors can correspond to different mineral associations, and thus to mineralisation.
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—Blaise Pascal (1623–1662)
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