nerc.ac.uk

Understanding the hydrogeology and surface flow in the Cuatrociénegas Basin (NE Mexico) using stable isotopes

Felstead, Nicholas J.; Leng, Melanie J.; Metcalfe, Sarah E.; Gonzalez, Silvia. 2015 Understanding the hydrogeology and surface flow in the Cuatrociénegas Basin (NE Mexico) using stable isotopes. Journal of Arid Environments, 121. 15-23. 10.1016/j.jaridenv.2015.05.009

Before downloading, please read NORA policies.
[img]
Preview
Text
Understanding the hydrogeology and surface flow in the Cuatrociénegas Basin (NE Mexico) using stable isotopes (Felstead et al., 2015).pdf - Accepted Version

Download (566kB) | Preview

Abstract/Summary

In this paper we present surface water oxygen (δ18O), hydrogen (δD) and inorganic carbon (δ13CDIC) isotope data to gain a better understanding of the modern day hydrogeology of Cuatrociénegas Basin, a semi-arid region in northeastern Mexico. Our study focuses on 26 water samples collected in March 2008 to investigate: 1) current provenance and flow pathways of surface waters, 2) the use of stable isotopes in identifying water loss and environmental degradation, and 3) human influence on hydrogeology. δ18O for Cuatrociénegas water samples ranged from −7.99 to +4.97‰ (mean −5.23 ± 3.13‰), δD from −54.8 to +0.3‰ (mean −42.4 ± 14.4‰), and δ13CTDIC from −21.6 to −9.2‰ (mean −14.3 ± 3.4‰). Samples collected progressively away from their respective spring lines display increasing δ18O and δD values. Isotope data suggest that where the residence time of the groundwater is long and/or the system is hydrologically open, δ18O may not be a reliable indicator of water loss and environmental degradation. Our data suggest the central ciénega (area W(b)) is the most viable area for palaeoenvironmental study and long term monitoring is an essential tool in the identification of ecosystem damage and response, allowing for better future management of the complex and fragile CCB ecosystem.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.jaridenv.2015.05.009
ISSN: 01401963
Date made live: 17 Jun 2015 14:29 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/511077

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...