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Full-Text Articles in Physical Sciences and Mathematics
Carbon Cycling Dynamics Inferred From Carbon Isotope Sourcing In A Mid-Latitude Karst-Influenced River, Kegan N. Mcclanahan
Carbon Cycling Dynamics Inferred From Carbon Isotope Sourcing In A Mid-Latitude Karst-Influenced River, Kegan N. Mcclanahan
Masters Theses & Specialist Projects
As ever-increasing levels of carbon dioxide alter the chemistry of the Earth’s atmosphere, understanding the global carbon cycle becomes increasingly important. A particularly important component is the riverine carbon cycle, as rivers are the primary conduits for dissolved inorganic carbon from terrestrial watersheds to ocean basins. Stable carbon isotopes (13C/12C) were collected weekly and input into the mixing model IsoSource to delineate seasonal carbon sourcing along two nested basins in the upper Green River System, Kentucky. In the more siliciclastic upstream catchment, dissolved inorganic carbon (DIC) was primarily derived from soil respiration (34%). Groundwater dissolving carbonate bedrock and carbonate dissolution/precipitation …
Shallow Groundwater Monitoring Associated With The Deep Saline Reservoir Co2 Storage Test In Hancock County, Kentucky, E. Glynn Beck
Shallow Groundwater Monitoring Associated With The Deep Saline Reservoir Co2 Storage Test In Hancock County, Kentucky, E. Glynn Beck
Report of Investigations--KGS
A carbon dioxide injection test well was drilled in 2009 to a depth of 8,126 ft below ground surface in Hancock County, Kentucky. Six hundred ninety tons of CO2 was successfully injected into Knox Group saline aquifers. Two domestic wells (MB and GB) and two domestic springs (CA and RC) were sampled to monitor any potential changes in groundwater quality associated with possible migration of CO2 from deeper saline aquifers into shallow freshwater aquifers. The four sites were sampled for pH, bicarbonate, total dissolved solids, turbidity, anions, total dissolved metals, dissolved inorganic carbon, total CO2, and …
Full Of Hot Air: Heat Flow At The Medicine Lake Volcano Hot Spot, Modoc County, California, Katrina D. Gelwick
Full Of Hot Air: Heat Flow At The Medicine Lake Volcano Hot Spot, Modoc County, California, Katrina D. Gelwick
Honors Papers
Changes in volcanic hydrothermal systems can shed light on the physical processes associated with volcanic unrest such as changes in an underlying magma body. The U.S. Geological Survey recently implemented an experimental hydrothermal monitoring network throughout the Cascade volcanic arc. Despite being ranked as the 12th highest threat among all Cascade volcanoes, Medicine Lake Volcano in northeastern California is considered under-monitored. The primary hydrothermal-monitoring site at Medicine Lake Volcano is a weak fumarole contained within a small area of heated ground, called the Hot Spot, located near the caldera rim. This study uses data from a survey conducted in August …