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Title:   Author  item
                                            VANDERHOFF, SEAN - Western Kentucky Universityitem
                                            POLK, JASON - Western Kentucky Universityitem
                                            GROVES, CHRIS - Western Kentucky Universityitem
                                            MILLER, BEN - Western Kentucky Universityitem
                                            Bolster, Carl
  Submitted to: Geological Society of America Meeting
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 8/2/2011
                                    Publication  Date: 10/10/2011
                                    Citation: Vanderhoff, S., Polk, J., Groves, C., Miller, B., Bolster, C.H. 2011. Multiple storm event impacts on epikarst storage and transport of organic soil amendments in South-Central Kentucky.. Geological Society of America Meeting. Abstract Only.Interpretive Summary:
                                Technical Abstract: The groundwater in agricultural karst areas is susceptible to contamination from organic soil amendments and pesticides. During major storm events of winter and spring 2011, dye traces were initiated using sulphorhodamine-B, fluorescein and eosine in a known groundwater recharge area where manure was applied to the ground. Water samples and geochemical data were collected every four hours before, during, and between the storm events from a waterfall in the cave flowing from the known recharge area to track the transport and residence time of the epikarst water and organic soil amendments during variable flow conditions. Two dataloggers at the same waterfall were set up to collect 10-minute data, which included pH, specific conductivity, temperature, and discharge. Total rainfall amount and other surface meteorological data were collected from a rain station located above the cave. Cave water samples were collected for the analysis of anions, cations, bacterial count, and the presence of dye. The dye traces show variability in the characteristics of epikarstic response and flowpaths. The changes in geochemistry indicate simultaneous storage and transport of meteoric water through epikarst pathways into the cave, with rapid transport of bacteria occurring through the conduits that bypass storage. The results indicate that significant precipitation events affect the storage properties and rapidly impact the various pathways and timing of contaminant transport through the epikarst zone, eventually allowing these contaminants to be transported unfiltered in to the groundwater supply.


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