Services on Demand
Journal
Article
Indicators
Cited by SciELO
Access statistics
Related links
Similars in SciELO
Share
Tecnología y ciencias del agua
On-line version ISSN 2007-2422
Abstract
MEJIA-GONZALEZ, Miguel Ángel; GONZALEZ-HITA, Luis; ESPINOZA-AYALA, Joselina and GONZALEZ-VERDUGO, José Alfredo. Use of environmental isotopes to determine the contribution of fresh water to Chacahua and Salina Grande coastal lagoons, Oaxaca Mexico. Tecnol. cienc. agua [online]. 2012, vol.3, n.3, pp.53-64. ISSN 2007-2422.
Using measurements of stable isotopes (oxygen 18 and deuterium) as well as values for specific electrical conductivity, the sources of fresh water were determined as well as their contributions to the coastal lagoons of Chacahua and Salina Grande. Three possible sources were considered: the Verde River, rain and the underlying aquifer. The stable isotopic composition of the different families of water revealed that each one has a distinctive footprint, which enabled distinguishing one from the other and determining their mixing ratios based on different water collected taken from the lagoons. Results enabled the identification of sources of fresh water sources and their effective contributions, which can account for as much as 38% of the total water entering the lagoons.
Keywords : fresh water sources; coastal lagoons; environmental isotopes.