Dimension Reduction and Analysis of a 10-Year Physicochemical and Biological Water Database Applied to Water Resources Intended for Human Consumption in the Provence-Alpes-Côte d’Azur Region, France

Clicks: 169
ID: 99410
2020
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Abstract
The SISE-Eaux database of water intended for human consumption, archived by the French Regional Health Agency (ARS) since 1990, is a rich source of information. However, more or less regular monitoring over almost 30 years and the multiplication of parameters lead to a sparse matrix (observations × parameters) and a large dimension of the hyperspace of data. These characteristics make it difficult to exploit this database for a synthetic mapping of water quality, and to identify of the processes responsible for its diversity in a complex geological context and anthropized environment. A 10-year period (2006−2016) was selected from the Provence-Alpes- Côte d’Azur region database (PACA, southeastern France). We extracted 5,295 water samples, each with 15 parameters. A treatment by principal component analysis (PCA) followed with orthomax rotation allows for identifying and ranking six principal components (PCs) totaling 75% of the initial information. The association of the parameters with the principal components, and the regional distribution of the PCs make it possible to identify water-rock interactions, bacteriological contamination, redox processes and arsenic occurrence as the main sources of variability. However, the results also highlight a decrease of useful information, a constraint linked to the vast size and diversity of the study area. The development of a relevant tool for the protecting and managing of water resources will require identifying of subsets based on functional landscape units or the grouping of groundwater bodies.
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tiouiouine2020dimensionwater Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Tiouiouine, Abdessamad;Yameogo, Suzanne;Valles, Vincent;Barbiero, Laurent;Dassonville, Fabrice;Moulin, Marc;Bouramtane, Tarik;Bahaj, Tarik;Morarech, Moad;Kacimi, Ilias;
Journal water
Year 2020
DOI
DOI not found
URL
https://www.mdpi.com/2073-4441/12/2/525
Keywords
water supply for domestic and industrial purposes hydraulic engineering

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