Title:
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New insights on river water chemistry by using non-centred simplicial principal component analysis: a case study
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Author:
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Buccianti, Antonella; Vaselli, Orlando; Nisi, Barbara
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Other authors:
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Thió i Fernández de Henestrosa, Santiago; Martín Fernández, Josep Antoni; Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada |
Abstract:
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The use of perturbation and power transformation operations permits the investigation of linear processes in the simplex as in a vectorial space. When the investigated geochemical processes can be constrained by the use of well-known starting point, the eigenvectors of the covariance matrix of a non-centred principalcomponent analysis allow to model compositional changes compared with a reference point.The results obtained for the chemistry of water collected in River Arno (central-northern Italy) have open new perspectives for considering relative changes of the analysed variables and to hypothesise the relative effect of different acting physical-chemical processes, thus posing the basis for a quantitative modelling |
Abstract:
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Geologische Vereinigung; Universitat de Barcelona, Equip de Recerca Arqueomètrica; Institut d’Estadística de Catalunya; International Association for Mathematical Geology; Patronat de l’Escola Politècnica Superior de la Universitat de Girona; Fundació privada: Girona, Universitat i Futur. |
Publication date:
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2009-04-01 |
Subject(s):
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-Anàlisi multivariable -Medi ambient -- Mètodes estadístics |
Rights:
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Tots els drets reservats |
Document type:
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Conference Object |
Published by:
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Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada
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