Electrical resistivity imaging and fluid modeling of free convection in a coastal Sabkha

Remke L. Van Dam, Brian P. Eustice, Warren W. Wood, David W. Hyndman, Craig T. Simmons

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Free convection is a process by which mixing of fluids occurs over larger scales and at faster rates than Fickian transport; this process is of critical importance for a range of environmental issues. Despite decades of research, the understanding of this phenomenon still largely stems from theoretical studies, lab experiments, numerical modeling, and secondary field observations. In this contribution, we present a time-lapse field study of free convection in a coastal sabkha in the United Arab Emirates. Using electrical resistivity imaging data collected during three field campaigns, we demonstrate that free convection at this site originates from episodic large rainfall events that drive salt dissolution at the surface and infiltration of a dense brine to the water table. Our observations, including the rates of downward migration and dissipation of the dense fingers, are corroborated by hydrodynamic modeling of the system.

Original languageEnglish
Title of host publicationSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012
PublisherSociety of Exploration Geophysicists
Pages3994-3999
Number of pages6
ISBN (Print)9781622769452
DOIs
Publication statusPublished - 1 Jan 2012
EventSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012 - Las Vegas, United States
Duration: 4 Nov 20129 Nov 2012

Publication series

NameSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012

Conference

ConferenceSociety of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012
CountryUnited States
CityLas Vegas
Period4/11/129/11/12

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  • Cite this

    Van Dam, R. L., Eustice, B. P., Wood, W. W., Hyndman, D. W., & Simmons, C. T. (2012). Electrical resistivity imaging and fluid modeling of free convection in a coastal Sabkha. In Society of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012 (pp. 3994-3999). (Society of Exploration Geophysicists International Exposition and 82nd Annual Meeting 2012, SEG 2012). Society of Exploration Geophysicists. https://doi.org/10.1190/segam2012-1273.1