Differences in Metal Areal Distribution Displayed by Trend-Surface Analysis

Severs, R.K.; Chambers, Leslie A.

doi:10.1080/00039896.1972.10666150

Cited by 1 publication

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“…The m apping approaches of these two geochemical surveys of the atmosphere were relatively simple although elaborate. In Houston, Texas, Severs & Chambers (1972) used trend-surface analysis based on only 17 sample localities to map the distribution of metals in air. The computerproduced choropleth maps reflected the general distribution of pollution in the city and revealed differences between the distributions of specific metals that correlated with different kinds of technological activities within the city.…”

Section: Combined Environmental and Health Surveysmentioning

confidence: 99%

Geochemical surveys in the United States in relation to health

Tourtelot

1979

Phil. Trans. R. Soc. Lond. B

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Geochemical surveys in relation to health may be classified as having one, two or three dimensions. One-dimensional surveys examine relations between concentrations of elements such as Pb in soils and other media and burdens of the same elements in humans, at a given time. The spatial distributions of element concentrations are not investigated. The primary objective of two-dimensional surveys is to map the distributions of element concentrations, commonly according to stratified random sampling designs based on either conceptual landscape units or artificial sampling strata, but systematic sampling intervals have also been used. Political units have defined sample areas that coincide with the units used to accumulate epidemiological data. Element concentrations affected by point sources have also been mapped. Background values, location of natural or technological anomalies and the geographic scale of variation for several elements often are determined. Three-dimensional surveys result when two-dimensional surveys are repeated to detect environmental changes.

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Section: Combined Environmental and Health Surveysmentioning

confidence: 99%

Geochemical surveys in the United States in relation to health

Tourtelot

1979

Phil. Trans. R. Soc. Lond. B

View full text Add to dashboard Cite

show abstract

Differences in Metal Areal Distribution Displayed by Trend-Surface Analysis

Cited by 1 publication

References 5 publications

Geochemical surveys in the United States in relation to health

Geochemical surveys in the United States in relation to health

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