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Artículo

Magnetic studies and elemental analysis of river sediments: a case study from the Ponnaiyar River (Southeastern India)

Chaparro, Marcos Adrián EduardoIcon ; Govindhasamy, Suresh; Chaparro, Mauro Alejandro EduardoIcon ; Ramasamy, V.; Sinito, Ana MariaIcon
Fecha de publicación: 11/2012
Editorial: Springer
Revista: Environmental Earth Sciences
ISSN: 1866-6280
e-ISSN: 1866-6299
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Meteorología y Ciencias Atmosféricas

Resumen

The Ponnaiyar River is one of the largest rivers of the Tamil Nadu state (India), flowing a distance of 430 km from its point of origin to the sea. This work contributes with new data of magnetic and elemental composition of river sediments, and improves the knowledge obtained by preliminary and previous studies of rivers from Southeastern India. Magnetic susceptibility, anhysteretic and isothermal remanent magnetization and chemical determinations (major and trace metals) were measured. Magnetic results reveal the predominance of magnetite-like mineral with magnetic grain size variations along the river and in depth. Most of the uppermost samples have the major presence of trace metals and higher values of magnetic concentration. Magnetic and chemical variables were also analysed as potential pollution indicators using multivariate statistical techniques: canonical correlation and fuzzy c-means clustering analyses, which confirmed the existence of relationships, but not in a simple way, between magnetic and chemical variables. Furthermore, fuzzy analysis allows classifying the data in different well-differentiated groups regarding the trace metal load, concentration and feature-dependent parameters. The most polluted samples show high concentration of trace elements and magnetic carriers, softer and coarser magnetic minerals; on the contrary, the unpolluted samples (from the deepest sediments) have the opposite characteristics.
Palabras clave: Magnetic Monitoring , Magnetic Parameters , Fuzzy C-Means Clustering
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/33201
DOI: http://dx.doi.org/10.1007/s12665-012-2116-y
URL: https://link.springer.com/article/10.1007/s12665-012-2116-y
Colecciones
Articulos(CCT - MAR DEL PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - MAR DEL PLATA
Articulos(CCT - TANDIL)
Articulos de CTRO CIENTIFICO TECNOLOGICO CONICET - TANDIL
Articulos(CIFICEN)
Articulos de CENTRO DE INV. EN FISICA E INGENIERIA DEL CENTRO DE LA PCIA. DE BS. AS.
Citación
Chaparro, Marcos Adrián Eduardo; Govindhasamy, Suresh; Chaparro, Mauro Alejandro Eduardo; Ramasamy, V.; Sinito, Ana Maria; Magnetic studies and elemental analysis of river sediments: a case study from the Ponnaiyar River (Southeastern India); Springer; Environmental Earth Sciences; 70; 1; 11-2012; 201-213
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