REGIONALIZATION BASED ON WATER CHEMISTRY AND PHYSICOCHEMICAL TRAITS IN THE RING OF CENOTES, YUCATAN, MEXICO

Citation

Material Information

Title:
REGIONALIZATION BASED ON WATER CHEMISTRY AND PHYSICOCHEMICAL TRAITS IN THE RING OF CENOTES, YUCATAN, MEXICO
Series Title:
Journal of Cave and Karst Studies
Creator:
Pérez-Ceballos, R.
Pacheco-Avila, J.
Eáun-Avila, J.I.
Hernández-Arana, H.
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Water Chemistry ( local )
Physicochemical ( local )
Ring Of Cenotes ( local )
Aquifers ( local )
Yucatan, Mexico ( local )
Karst Formations ( local )
Sinkholes ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
Assessing water quality in aquifers has become increasingly important as water demand and pollution concerns rise. In the Yucatan Peninsula, sinkholes, locally known as cenotes, are karst formations that intercept the water table. Cenotes are distributed across the peninsula, but are particularly dense and aligned along a semi- circular formation called the Ring of Cenotes. This area exhibits particular hydrogeological properties because it concentrates, channels, and discharges fresh water toward the coasts. In this study, we identify spatial and temporal variations in chemical and physical variables at twenty-two cenotes to identify groups that share similar characteristics. Water samples from each cenotes were taken at three depths (0.5, 5.5, and 10.5 m) and during three seasons (dry, rainy, and cold-fronts season). Field measurements of pH, temperature, electrical conductivity, and dissolved oxygen were taken, and the concentrations of major ions (K+, Na+, Mg2+, Ca2+, HCO{, SO2{, Cl2 34 and NO{3 ) were quantified. Identifying regions of the cenotes were done by applying multivariate statistical techniques (PCA, PERMANOVA, CAP). The chemical variables revealed spatial trends among the cenotes. We identified three main regions. Region 1 is associated with sea-water encroachment and high levels of sulfate that travel through preferential groundwater flowpaths from evaporites in the southern Yucatan Peninsula; Region 2 is a recharge zone, and Region 3 is characterized by sea water encroachment and by the high chemical and physical variability associated with groundwater flow from the east.
Original Version:
Journal of Cave and Karst Studies, Vol. 74, no. 1 (2012-04).

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University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

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