@mastersthesis {3201,
	title = {Elemental Cycling in a Flow-Through Lake in the McMurdo Dry Valleys, Antarctica: Lake Miers},
	volume = {Master Thesis},
	year = {2014},
	month = {06/2014},
	pages = {122},
	school = {Ohio State University},
	type = {masters},
	address = {Columbus},
	abstract = {<p>The ice-free area in Antarctica known as the McMurdo Dry Valleys has been monitored biologically, meteorologically, hydrologically, and geochemically continuously since the onset of the MCM-LTER in 1993. This area contains a functioning ecosystem living in an extremely delicate environment. Only a few degrees of difference in air temperature can effect on the hydrologic system, making it a prime area to study ongoing climate change. The unique hydrology of Lake Miers, i.e. its flowthrough nature, makes it an ideal candidate to study the mass balance of a McMurdo Dry Valley lake because both input and output concentrations can be analyzed. This study seeks to understand the physical and geochemical hydrology of Lake Miers relative to other MCMDV lakes. Samples were collected from the two inflowing streams, the outflowing stream, and the lake itself at 11 depths to analyze a suite of major cations (Li+ , Na+ , K+ , Mg+ , Ca2+), major anions (Cl- , Br- , F- , SO4 2- , ΣCO2), nutrients (NO2 - , NO3 - , NH4 + , PO4 3- , Si), trace elements (Mo, Rb, Sr, Ba, U, V, Cu, As), water isotopes (δD, δ 18O), and dissolved organic carbon (DOC). The lake acts as a sink for all constituents analyzed, but by amounts varying from ~10\% (DOC, NH4 + , and NO2 - ) to PO4 3- at nearly 100\%, indicating this lake may be P-limited. Cl- , a typically conservative element, was only 79\% retained, which could be due to the late season sample collection, hyperheic zone influences, or other factors. The hyperheic zone\&rsquo;s role in lake and stream iii geochemistry was analyzed with a 24-hour sampling event. The positive relationships between stream flow and solute concentrations indicate that the delta in Miers Valley plays a role in controlling stream geochemistry and future work could help to explain this relationship. Lake depth profiles of trace elements U, V, Cu, and As decrease relative to Cl in the deepest part of the lake, while non-reducing trace elements show increases with depth. SO4 2- and dissolved O2 lake depth profiles decrease from 53 μM and 22.3 mg/L to 18 μM and 1.8 mg/L, respectively, at depth, indicating that the lake bottom is under reducing and near anoxic conditions. Lake depth profiles show that, while the \&ldquo;biological pump\&rdquo; may be a factor controlling lake chemistry, it is masked by the stronger signal of diffusion from the lake bottom sediments and requires future work to understand fully. The \&ldquo;age\&rdquo; of Lake Miers was calculated with a diffusion model to be 84 years, which agrees with other estimates of 100-300 years. The diffusion of solutes from the lake bottom and the redox conditions at depth are two major processes controlling the geochemistry of Lake Miers, and future work can help determine their extent and relationship with other processes.</p>},
	keywords = {LTER-MCM},
	url = {https://etd.ohiolink.edu/!etd.send_file?accession=osu1413291502\&disposition=inline},
	author = {Alexandria Corinne Fair and W. Berry Lyons},
	editor = {Anne E. Carey and Yu-Ping Chin}
}
@article {1237,
	title = {Solute and isotope geochemistry of subsurface ice melt seeps in Taylor Valley, Antarctica},
	journal = {Geological Society of America Bulletin},
	volume = {119},
	year = {2007},
	month = {01/2007},
	pages = {548-555},
	keywords = {LTER-MCM, Climate Response},
	doi = {10.1130/B25913.1},
	url = {http://gsabulletin.gsapubs.org/content/119/5-6/548.short},
	author = {Harris, K and Anne E. Carey and Kathleen A. Welch and W. Berry Lyons and Andrew G Fountain}
}
@article {1299,
	title = {Groundwater seeps in Taylor Valley Antarctica: An example of a subsurface melt event},
	journal = {Annals of Glaciology},
	volume = {40},
	year = {2005},
	pages = {200-206},
	keywords = {LTER-MCM},
	doi = {LTER},
	author = {W. Berry Lyons and Kathleen A. Welch and Anne E. Carey and Diana H. Wall and Ross A. Virginia and Andrew G Fountain and Peter T. Doran and Csatho, B and Tremper, C}
}
@mastersthesis {1314,
	title = {Mathematical Modeling of a Hydrocarbon Spill on the Ice Cover of Lake Fryxell, Antarctica},
	volume = {M.S.},
	year = {2005},
	month = {06/2005},
	pages = {114},
	school = {The Ohio State University},
	type = {masters},
	address = {Columbus},
	abstract = {<p>Numerous perennially ice-covered lakes exist in the McMurdo Dry Valleys region of Antarctica. Ice cover melting on these lakes and meltwater infiltration are important processes affecting the ecology of these lakes. The three lakes in Taylor Valley, Lakes Bonney, Fryxell and Hoare, have been investigated since 1993 as part of the McMurdo Dry Valleys Long Term Ecological Research (MCM LTER) site. A Bell 212 helicopter flying in support of the National Science Foundation\&$\#$39;s Antarctic Research Program crashed on the frozen surface of Lake Fryxell on January 17, 2003. This resulted in the release of approximately 731 Liters (193 gallons) of diesel fuel and amounts of engine oil and hydraulic fluid. Two physically based models are developed that simulate heat, meltwater flow and solute transport. The first is a transient, one-dimensional, thermodynamic model, which can predict the temperature distribution in the ice cover, melting rate at the surface and at the bottom of ice cover, and ice thickness. The second model simulates unsaturated flow and solute transport and is used to estimate water content distribution and solute transport through the ice cover. The validation of heat transport model was accomplished by comparing model results with the original measurements of ice temperature at various depth in Lake Fryxell. Because of lack of the field data, validation of the unsaturated flow and solute transport model couldn\&$\#$39;t been accomplished, instead of model validation, programming code has been verified by comparing results with results generated by the HYDRUS 1D software, developed by U.S. Salinity Laboratory, USDA.</p>},
	keywords = {LTER-MCM},
	author = {Marinko Karnovic and Anne E. Carey and Scott E. Bair and van der Veen, Cornelis}
}
