A5077135343- Groundwater and Isotope Geochemistry
- Groundwater flow and contamination studies
- Geology and Paleoclimatology Research
- Hydrocarbon exploration and reservoir analysis
- Geochemistry and Geologic Mapping
- Karst Systems and Hydrogeology
- Geochemistry and Elemental Analysis
- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Water Quality and Resources Studies
- CO2 Sequestration and Geologic Interactions
- Climate change and permafrost
- Soil and Water Nutrient Dynamics
- Hydraulic Fracturing and Reservoir Analysis
- Hydrology and Watershed Management Studies
- Soil and Unsaturated Flow
- Archaeology and Natural History
- Marine and coastal ecosystems
- Radioactive element chemistry and processing
- Radioactivity and Radon Measurements
- Flood Risk Assessment and Management
- Drilling and Well Engineering
- Geophysical and Geoelectrical Methods
- Hydrology and Sediment Transport Processes
- Fish Ecology and Management Studies
University of Kansas
2014-2023
Bureau of Economic Geology
1982-1984
Bureau of Economic Analysis
1982-1984
The University of Texas at Austin
1982-1983
Syracuse University
1983
Weatherford College
1982
Research Article| April 01, 2004 Microbial precipitation of dolomite in methanogenic groundwater Jennifer A. Roberts; Roberts 1Department Geology, University Kansas, Lawrence, Kansas 66045, USA Search for other works by this author on: GSW Google Scholar Philip C. Bennett; Bennett 2Department Geological Sciences, Texas at Austin, 78712, Luis González; González 3Department G.L. Macpherson; Macpherson Kitty L. Milliken 4Department Author and Article Information Publisher: Society America...
Abstract. Carbonate weathering is essential in regulating atmospheric CO2 and carbon cycle at the century timescale. Plant roots accelerate by elevating soil via respiration. It however remains poorly understood how much rooting characteristics (e.g., depth density distribution) modify flow paths weathering. We address this knowledge gap using field data from reactive transport numerical experiments Konza Prairie Biological Station (Konza), Kansas (USA), a site where woody encroachment into...
The Afghanistan population living far from rivers relies upon groundwater delivered karezes (sub-horizontal tunnels). Karezes exploit unconfined in alluvial fans recharged largely by snowmelt the Hindu Kush, central mountain range of country. Since multi-year drought that began 1998, many have stopped flowing. This study characterizes hydraulics a kariz, potential for reduced recharge because climate change, and impact increasing on kariz water production. A typical is 1–2 km long with...
Climate predictions indicate that precipitation patterns will change and average air temperatures increase across much of the planet. These changes alter surface water groundwater which can significantly affect local regional environment. Here, we examine role timing in to temperature carbonate-karst aquifers using measured level data from Konza Prairie Long-Term Ecological Research Site, Kansas. We demonstrate shifts increased cool-season may mitigate increases produced by annual...
Abstract Lithium (Li) concentrations of produced water from unconventional (horizontally drilled and hydraulically fractured shale) conventional gas wells in Devonian reservoirs the Appalachian Plateau region western Pennsylvania range 0.6 to 17 mmol kg −1 , Li isotope ratios, expressed as δ 7 Li, +8.2 +15‰. are high 40 waters Plio‐Pleistocene through Jurassic‐aged Gulf Coast Sedimentary Basin analyzed for this study, values about +4.2 +16.6‰. Because charge‐balance constraints rock...
The Hawaii Scientific Drilling Project 2 Phase 1 core permits study of each stage alteration basalt glass during burial because stages the process are separated vertically. Previous work has shown that hyaloclastite occurs progressively. latest observed in involves marginal replacement sideromelane shards with palagonite while simultaneously forming chabazite pores. basic reaction at this is + components from pore waters = to waters. Mass balance calculations show Fe was virtually immobile...
Core Ideas Konza Prairie is a reference ecosystem for evaluation of current and former grasslands. Hydrologic change includes climatic geologic factors such as karstification. Future research needed to expand vadose zone knowledge. Agricultural intensification urbanization have greatly reduced the extent tallgrass prairie across North America. To evaluate impact these changes, unperturbed required. The Biological Station in northeastern Kansas long‐term site at which critical approach has...