Weathering, geomorphic work, and karst landscape evolution in the Cave City groundwater basin, Mammoth Cave, Kentucky

Natural variations in calcite dissolution rates in streams: Controls, implications, and open questions

“…However, the observed low variability in time also suggests that the typical approach of constant input chemistry is a reasonable approximation in many cases. Though a few site-specific studies have examined controls on carbonate system dynamics using time series data [e.g., Liu et al, 2004;Groves and Meiman, 2005;Pu et al, 2014], more work is needed to fully understand what determines whether dilution or CO 2 is important in a given setting or under given conditions. Prior work has shown that dilution is an important control on dissolution where runoff from noncarbonate rocks, which is undersaturated, mixes with or displaces groundwater from carbonate aquifers, which is saturated [Gulley et al, 2013[Gulley et al, , 2014.…”

“…For tractability, these models have typically employed constant hydraulic and chemical boundary conditions. While these models have improved understanding of the dynamics of cave formation, very few studies have directly assessed the magnitude and variability of dissolution rates in streams within carbonate environments [Groves and Meiman, 2005;Palmer, 2007b;Prelovšek, 2012]. Consequently, the degree to which speleogenetic models capture natural variability in dissolution rates, and hence timescales of cave formation and enlargment, is unknown.…”

Measuring Inorganic Carbon Fluxes From Carbonate Mineral Weathering From Large River Basins: The Ohio River Basin

“…This results in generalization and a loss of the variation occurring over time scales less than two months. However, this is of less concern, as discharge has been shown to vary more considerably, whereas variables such as pH, temperature, and alkalinity are relatively consistent throughout time and are largely controlled by discharge (Groves and Meiman, 2005), such that variation occurring over shorter timescales is not substantially dampened by use of aggregated water chemistry data. Furthermore, normalized flux values for the Kentucky River produced from high resolution monitoring data, and those calculated using coarse resolution data that was aggregated to match daily discharge measurements, showed very close There appears to be a threshold controlling the effectiveness of the model in predicting DIC flux using time-volume normalization parameters that is directly related to the carbonate surface area in the basin.…”

Rocky desertification risk zone delineation in karst plateau area: A case study in Puding County, Guizhou Province

“…Karst rocky desertification has never occurred in the eastern part of North America and the middle and southern parts of Europe. Some researches on karst conducted in those areas mainly focused on hydrology (Majone et al, 2004) and karst evolution (Grovea and Meiman, 2005). East Asia karst region, as the largest one of the three karst regions, is a typical fragile ecological zone, and has the most intensive karstification.…”