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Estimation and Mapping of Rank Related Uniform Transforms of Ion Deposition from Acid Precipitation.

Guertin, Kateri et Villeneuve, Jean-Pierre (1989). Estimation and Mapping of Rank Related Uniform Transforms of Ion Deposition from Acid Precipitation. Geostatistics , vol. 4 . p. 699-712. DOI: 10.1007/978-94-015-6844-9_55.

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Résumé

In the context of estimation of the spatial distribution of ion deposition from acid precipitation, it is interesting to compare patterns of deposition of various pollutant ions over different periods of time. A simple approach to produce comparable maps of such deposition patterns consists in estimating and mapping the dimensionless rank related uniform transform U of each studied ion deposition phenomenon D. In this paper, the geostatistics of such uniform transforms are presented and a uniformly distributed estimator U** is defined and characterized in terms of estimation variance. The performance of U** as an estimator of U is then illustrated through an application based on conditionally simulated deposition values and involving a regularly spaced data network. Two additional examples show how U** maps allow the identification and comparison of zones of extreme deposition for various pollutant ions and over time.

Type de document: Article
Mots-clés libres: estimation; variance; ordinary; kriging; deposition; pattern; acid; precipitation; data; configuration
Centre: Centre Eau Terre Environnement
Date de dépôt: 17 févr. 2021 16:28
Dernière modification: 17 févr. 2021 16:28
URI: https://espace.inrs.ca/id/eprint/11272

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