Título
Assessing the source and spatial distribution of chemical composition of a rift lake, using multivariate statistical, hydrogeochemical modeling and remote sensing
Autor
Cristina Noyola Medrano
Jose Alfredo Ramos_Leal
Briseida Lopez Alvarez
Janete Morán-Ramírez
ROSA MARIA FUENTES RIVAS
Nivel de Acceso
Acceso Abierto
Identificador alterno
doi: https://doi.org/10.15446/esrj.v23n1.66429 e-ISSN 2339-3459
Materias
Resumen o descripción
"The chemical composition of a freshwater surface depends on the sources of input that can be of natural or anthropogenic origin. This study examined the spatial variability of the water quality from Chapala Lake and discussed the possible sources to this freshwater surface which is the largest rift lake in Mexico. The methodology included multivariate statistical techniques to analyze the possible relationship between water quality and the natural and anthropogenic factors of the area. The outcome showed the existence of four groups of water mixture in the lake. Each one showed two or three end members that characterized its chemical nature. The different groups showed a spatial distribution and a particular spectral behavior was detected from the analysis of a Landsat 7 ETM+ image. The spectral signatures extracted from the satellite image showed a high reflectivity in the range of 830 - 1300 nm for the water provided by the Lerma-Chapala (group IV) system, which represents the most polluted water in the lake. This spectral behavior is not present in the rest of the group. The Western portion of the lake is fed mainly by open water. Contributions from groundwater dominate the Central part, and in the Eastern region, the primary source is the contaminated water from the Lerma river system. A high hydraulic head (hydraulic barrier) prevents the highest level of pollution from the Lerma river. This hydraulic barrier constituted by a significant portion of groundwater is at the Central part of the lake. Furthermore, the most polluted water flows directly to the Metropolitan Region of Guadalajara through the Santiago river. The predominant role played by the groundwater in the dynamics of Chapala Lake is explained, in part, from its tectonic origin. The dynamics of water in the Chapala Lake suggest the need to implement some management plans considering the tectonic origin of the Lake as an advantage for the control of pollution because of the significant contribution of groundwater in the Chapala Lake freshwater system."
Editor
Colegio de Postgraduados
Universidad Nacional de Colombia
Fecha de publicación
2019
Tipo de publicación
Artículo
Versión de la publicación
Versión aceptada
Recurso de información
Formato
application/pdf
Fuente
Earth Sciences Research Journal
Idioma
Inglés
Audiencia
Estudiantes
Investigadores
Maestros
Público en general
Sugerencia de citación
Noyola, C., Ramos, J., López, B., Morán, J. et Fuentes, R. (2019) Assessing the source and spatial distribution of chemical composition of a rift lake, using multivariate statistical, hydrogeochemical modeling and remote sensing en Earth Sciences Research Journal 23(1). Colombia: Universidad Nacional de Colombia.
Repositorio Orígen
Repositorio COLSAN
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