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Full-Text Articles in Physical Sciences and Mathematics

Atrazine Contamination And Suspended Sediment Transport Within Logsdon River, Mammoth Cave, Kentucky, Julie Eileen Schenck Brown Dec 2008

Atrazine Contamination And Suspended Sediment Transport Within Logsdon River, Mammoth Cave, Kentucky, Julie Eileen Schenck Brown

Masters Theses & Specialist Projects

Understanding the potential for karst aquifer contamination by sediment-sorbed pesticides is important for cave conservation efforts in agricultural landscapes. Flow rate, water quality parameters and suspended sediment concentrations were measured in Logsdon River, a ~10km karst conduit within the Turnhole Spring Groundwater Basin of Mammoth Cave National Park to determine characteristics of storm-period transport of sediment-sorbed atrazine through a conduit-flow karst aquifer.

Analysis of two independent precipitation events occurring in the Spring of 2008 from May 2-4 and May 27-29 demonstrated the rapid response of the Logsdon River to precipitation events with detections of atrazine increasing during the initial turbidity …


The Application Of Electrical Resistivity And Microgravity To Locate Tunnels Along The U.S.-Mexico Border At Calexico, Gina Lee Cesin Dec 2008

The Application Of Electrical Resistivity And Microgravity To Locate Tunnels Along The U.S.-Mexico Border At Calexico, Gina Lee Cesin

Masters Theses & Specialist Projects

No abstract provided.


Simulation Modeling Of Karst Aquifer Conduit Evolution And Relations To Climate, John D. Broome Dec 2008

Simulation Modeling Of Karst Aquifer Conduit Evolution And Relations To Climate, John D. Broome

Masters Theses & Specialist Projects

ABSTRACT Karst regions of the world that receive relatively similar amounts of precipitation display a wide variety of landscapes. It has been suggested (Groves and Meiman, 2005) that climates exhibiting larger discrete storm events have more dissolving power and consequently higher rates of conduit growth than climates with more uniform precipitation distributions. To study this concept, a computer program “Cave Growth” was developed that modeled the growth of a cross-section of a cave passage under dynamic flow and chemical conditions. A series of 46 simulation datasets were created to represent different climatic conditions. These simulations had the same total annual …


Watershed Condition Assessment For Little River Canyon National Preserve, Alabama, Nathan Demille Rinehart Dec 2008

Watershed Condition Assessment For Little River Canyon National Preserve, Alabama, Nathan Demille Rinehart

Masters Theses & Specialist Projects

No abstract provided.