2004
DOI: 10.1002/hyp.1416
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Temporal and spatial variability of cation and silica export in an alpine watershed, Emerald Lake, California

Abstract: A reaction set of possible mineral weathering reactions is proposed to explain observed cation and silica export for the Emerald Lake watershed, a small Sierra Nevada, California catchment. The reaction set was calculated through a stoichiometric mole-balance method, using a multiyear record of stream flow and snowpack chemical analyses and site-specific mineral compositions. Reaction-set calculations were intended to explore how the processes controlling stream cation and silica export depend on differing bed… Show more

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Cited by 4 publications
(4 citation statements)
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“…It also appears that high-elevation lakes without substantial groundwater exchange tend not to be associated with such overburden deposits. For example, Emerald Lake (Kattelmann and Elder, 1991) is largely surrounded by igneous bedrock (Figure 1 of Meixner et al, 2004), while the lakes studied by Michel et al (2002) occupy low-lying areas of a fractured basalt cap with minimal soil development. In both studies, groundwater exchange was deemed negligible.…”
Section: Coarse Overburden Materials and Groundwater-lake Exchangementioning
confidence: 98%
“…It also appears that high-elevation lakes without substantial groundwater exchange tend not to be associated with such overburden deposits. For example, Emerald Lake (Kattelmann and Elder, 1991) is largely surrounded by igneous bedrock (Figure 1 of Meixner et al, 2004), while the lakes studied by Michel et al (2002) occupy low-lying areas of a fractured basalt cap with minimal soil development. In both studies, groundwater exchange was deemed negligible.…”
Section: Coarse Overburden Materials and Groundwater-lake Exchangementioning
confidence: 98%
“…These changes may drive the magnitude and persistence over time of solute concentrations in the surface waters of forested catchments prone to wildfires (Chorover et al, 1994;Williams and Melack, 1997a). Moreover, in systems with a high groundwater contribution to surface water discharge, cation and Si fluxes may provide insights of catchment responses to environmental disturbances (Meixner et al, 2004). It has been argued that forest fires may alter hydrologic partitioning processes (Harpold et al, 2014), and that variability in stream chemical concentrations may respond to changes in surface and subsurface water flow paths-shifts in mineral weathering reactions, cation exchange and biological processes may occur as water flows through areas with different bedrock mineralogy and lithology (Meixner et al, 2004;White et al, 2019).…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, in systems with a high groundwater contribution to surface water discharge, cation and Si fluxes may provide insights of catchment responses to environmental disturbances (Meixner et al, 2004). It has been argued that forest fires may alter hydrologic partitioning processes (Harpold et al, 2014), and that variability in stream chemical concentrations may respond to changes in surface and subsurface water flow paths-shifts in mineral weathering reactions, cation exchange and biological processes may occur as water flows through areas with different bedrock mineralogy and lithology (Meixner et al, 2004;White et al, 2019). Thus, it is imperative to couple post-fire physical and biogeochemical processes to further our understanding of the mechanisms that govern solute concentrations and exports in surface waters of burned forested watersheds in the short-and longterm.…”
Section: Introductionmentioning
confidence: 99%
“…Additionally, these and other studies have established links between the rate and location of snowmelt and the pathway and residence time of water in alpine catchments. Previous results in modeling alpine stream chemical composition have indicated that lack of knowledge of the path and residence time of water is a critical piece of information that needs to be improved on [ Campbell et al , 1995; Huth et al , 2004; Meixner et al , 2000, 2004; Wolford and Bales , 1996]. Since patterns of snow accumulation and snowmelt are susceptible to change in response to regional air temperature increases [ Mote et al , 2005], there is compelling science that indicates that advances in understanding feedbacks between hydrological and biogeochemical processes will increase our understanding of the susceptibility of alpine ecosystems to changes in climate and atmospheric deposition [ Meixner et al , 2000; Melack et al , 1997; Sickman et al , 2001].…”
Section: Introductionmentioning
confidence: 99%