Analysis of precipitation and recharge of aquifers in Tota and Ibagué (Colombia) from stable isotopes (18O and 2H)
DOI:
https://doi.org/10.19053/01211129.v27.n47.2018.7752Keywords:
aquifer recharge, deuterium, ground water infiltration, Ibagué fan, Lake Tota, oxygen 18, stable isotopesAbstract
Identifying the hydraulic connection between the area of recharge and the area of discharge in aquifers is only possible by using tracers; the 18O and 2H isotopes have proven to be good tracers to determine such hydraulic connection. It is assumed that in Ibagué and Lake Tota the recharge of the aquifers is given by two processes: vertical infiltration and precipitation, and infiltration in the high mountains followed by regional permeation that reaches the aquifers in the lower part. In Tota, the delta (δ) values of 18O are lower in the higher part than in the lower part: in the higher area, the values are close to -10 ‰, while in the lower area they are close to -3‰. In Ibagué, the delta values (δ) of 18O are also higher in the lower part: in the upper area the values are between -8 and -11 ‰, while in the lower area are between -7 and -9 ‰. In both cases, the isotopic difference between the upper and the lower areas could indicate that not all the water recharge in the lower area comes from precipitation in the high mountains, but that additional recharge can be the product of precipitation and infiltration in the lower part.
Downloads
References
T. Betancur, Una aproximación al conocimiento de un sistema acuífero tropical. Caso de estudio: el bajo cauca antioqueño. Medellín. Thesis. Universidad de Antioquia. 2008
J. Buitrago, and I. Vergara, Investigación hidrogeológica de la cuenca del lago de Tota. Thesis. UPTC, Sogamoso, Colombia. 1988.
Cortolima-Geotomografia, Estudio hidrogeológico y caracterización del acuífero en el abanico aluvial municipio de Ibagué-Tolima. Ibagué, Colombia. 2014.
G. Faure, Principles and applications of geochemistry. Prentice-Hall Inc. New Jersey, USA. 1998.
A. Freeze, and J. Cherry, Groundwater. Prentice-Hall Inc. New Jersey, USA. 1979.
H. Herrera, and G. Gutiérrez, “Contribuciones de los isotopos estables de 18O y 2H en el conocimiento del acuífero Morrosquillo, Departamento de Sucre, Colombia,” Revista Latinoamericana de Hidrogeología, vol. 8, pp. 39-47, Jul. 2012.
Ingeominas, Evaluación hidrogeológica del abanico de Ibagué. Servicio Geológico Colombiano. Bogotá, Colombia, 1997.
Ingeominas, Paleosismología de la Falla de Ibagué. Servicio Geológico Colombiano. Bogotá, Colombia, 2008.
I. Reyes, Cuestión origen del lago. UPTC, Sogamoso, Colombia. 1987.
K. Rozansky, “Hydrological balance of the Tota Lake,” End of mission report IAEA-TCR-00848. pp 7-15, Viena, Austria. 2002.
J. Veloza, Desarrollo del modelo hidrogeológico conceptual del lago de Tota. Thesis. UPTC, Sogamoso, Colombia. 2002.
Published
How to Cite
Issue
Section
License
All articles included in the Revista Facultad de Ingeniería are published under the Creative Commons (BY) license.
Authors must complete, sign, and submit the Review and Publication Authorization Form of the manuscript provided by the Journal; this form should contain all the originality and copyright information of the manuscript.
The authors who publish in this Journal accept the following conditions:
a. The authors retain the copyright and transfer the right of the first publication to the journal, with the work registered under the Creative Commons attribution license, which allows third parties to use what is published as long as they mention the authorship of the work and the first publication in this Journal.
b. Authors can make other independent and additional contractual agreements for the non-exclusive distribution of the version of the article published in this journal (eg, include it in an institutional repository or publish it in a book) provided they clearly indicate that the work It was first published in this Journal.
c. Authors are allowed and recommended to publish their work on the Internet (for example on institutional or personal pages) before and during the process.
review and publication, as it can lead to productive exchanges and a greater and faster dissemination of published work.
d. The Journal authorizes the total or partial reproduction of the content of the publication, as long as the source is cited, that is, the name of the Journal, name of the author (s), year, volume, publication number and pages of the article.
e. The ideas and statements issued by the authors are their responsibility and in no case bind the Journal.
