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Information about sources of recharge, distributions of flow paths, and the extent of water–rock reactions in karst aquifers commonly result from monitoring spring chemistry and discharge. To investigate the relationship between spring characteristics and the complexities of karst aquifers, we couple variations in surface- and groundwater chemistry to physical conditions including river stage, precipitation, and evapotranspiration (ET) within a sink-rise system through a 6-km portion of the Upper Floridan aquifer (UFA) in north-central Florida.
Karst aquifer studies often focus on allogenic water inputs and large conduit flow. However, diffuse recharge can be significant, particularly in unconfined eogenetic karst aquifers that retain high matrix permeability. Another study examined an unconfined region of the upper Floridan aquifer (USA) that hosts a sinking stream, its resurgence, and a large conduit system.
This project funding continued until 2007. |
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| Title: | Conduit enlargement in an eogenetic karst aquifer, J. Hydrology, 393: 143-155. 2010. |
| Authors: | Moore, P.J., Martin, J.B., Screaton, E.J., and Neuhoff, P.S. |
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| Title: | Conduit enlargement in eogenetic karst aquifers: An example from the Santa Fe River sink-rise system, north-central Florida, Geological Society of America Abstracts with programs, 41: 346. 2009. |
| Authors: | Moore, P.J., Martin, J.B., Screaton, E., Neuhoff, P.S. |
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| Title: | Conduit properties and karstification in the Santa Fe River Sink-Rise System of the Floridan Aquifer, Ground Water, 42: 338-346. 2004. |
| Authors: | Screaton, E., Martin, J.B., Ginn, B., Smith, L. |
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| Title: | Determining water sources and mixing in the Santa Fe River sink-rise system, north-central Florida, Geological Society of America, Abstracts with Program, v. 38, p. 194. 2006. |
| Authors: | Moore, P.J., Martin, J.B., Screaton, E.J., Ritorto, M. |
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| Title: | Exchange of water between conduit and matrix porosity in eogenetic karst? Evidence from a quantitive dye trace, Geological Society of America, Abstracts with Programs, v. 37, p. 435. 2005. |
| Authors: | Moore, P.J., and Martin, J.B. |
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| Title: | Hydrochemical variations in an eogenetic karst aquifer: Influences of recharge, flow paths, and mixing to a first magnitude spring, 2008 Joint Meeting of Geological Society of America, Houston, Texas, 5-9 October 2008. |
| Authors: | Moore, P.J., Martin, J.B., and Screaton, E.J. |
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| Title: | Interactions of diffuse and focused allogenic recharge in an eogenetic karst aquifer, Hydrogeology Journal, v. 20, p. 767-781. 2012. |
| Authors: | Langston, A.L., Screaton, E.J., Martin, J.B., Bailly-Comte, V. |
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