Interpreting CO₂–SIc relationship to estimate CO₂ baseline in limestone aquifers

Creator

N. Peyraube, Institut des Sciences de la Terre d'Orléans (ISTO)
R. Lastennet, Université de Bordeaux
A. Denis, Université de Bordeaux
P. Malaurent, Université de Bordeaux
J. D. Villanueva, Université de Bordeaux

Issue Date

4-2014

Abstract

Saturation index with respect to calcite (SIc) and equilibrium CO2 partial pressure are important parameters to study groundwater in limestone aquifers. Aside from their use in time series, CO2 and SIc are used to estimate the baseline of CO2 in the vadose zone. The objective of this paper is to present conceptual examples on the use of the CO2–SIc relationship to have new information from usual parameters. Case study was considered as an example of use from Cussac site, a limestone aquifer in southwest of France. The result showed that CO2 baseline in unsaturated zone is found close to 25,000 ± 1,000 ppm.

Source or Periodical Title

Environmental Earth Sciences

ISSN

1866-6280

Volume

72

Issue

10

Page

1-16

Document Type

Article

Physical Description

map, tables, graphs

Language

English

Subject

Carbonate rock, CO baseline 2, Unsaturated zone

Recommended Citation

Peyraube, N., Lastennet, R., Denis, A., Malaurent, P., Villanueva, J.D. (2014). Interpreting CO2 -SIc relationship to estimate CO2 baseline in limestone aquifers. Environmental Earth Sciences, 72 (10), 1-16. doi:10.1007/s12665-014-3316-4.

Identifier

doi:10.1007/s12665-014-3316-4.

Digital Copy

yes