• GEOMECHANICAL ANALYSIS OF THE GEOTHERMAL RESERVOIR AT SAN EMIDIO, NEVADA AND FRACTURE TOUGHNESS ANISOTROPY OF EGS COLLAB TESTBED ROCKS 

  Jahnke, Benjamin (2022-05)

  The WHOLESCALE (Water and Hole Observations Leverage Effective Stress Calculations and Lessen Expenses) project is aiming to simulate the spatial distribution and temporal evolution of stress throughout the geothermal ...

• Time-Lapse Geophysics and Characterization of an Infiltration Experiment in Unsaturated Wisconsin Alluvial Sediments 

  Swager, Katherine (2021-08)

  This thesis discusses the use of field geophysics, laboratory testing, and numerical modeling to characterize the infiltration mechanisms of a plume in the vadose zone. The study of fluid flow and transport in the vadose ...

• PARTICULATE ORGANIC MATTER TRANSPORT IN EXPERIMENTAL RIVERBED SAND COLUMNS 

  Bulur, Ecenur (2021-08)

  Abstract The hyporheic zone is a hot spot for coupled transport and biogeochemical reactions at the aquatic-terrestrial interface. The influx of particulate organic matter (POM), a biological colloid, into the near-surface ...

• Lithology and fault related stress variations along the TCDP borehole: the stress state before and after the Chi-Chi earthquake. 

  Talukdar, Mayukh; Sone, Hiroki; Kuo, Li-Wei (2021)

  Understanding the stress state before and after an earthquake is essential to study how stress on faults evolve during the seismic cycle. This study integrates wellbore failure analysis, laboratory experiments, and edge ...

• Impacts of Changing Frozen Ground Regimes on Groundwater Recharge 

  Hyman-Rabeler, Katrina (2021-06)

  The spring snowmelt accounts for a large percentage of annual groundwater recharge in northern latitudes. Many factors control the proportion of snowmelt that becomes groundwater or runoff, including the volume of snow, ...

• Drainage Characteristics of Recycled Materials for Mechanically Stabilized Earth Walls 

  Klink, Tyler (2021-05)

  With the expansion of transport, commercial, and residential infrastructure to support the needs of a growing populous, greater amounts of construction materials are required. These aspects place increased amounts of stress ...

• A Static Flux Chamber Design for Evaluation of Gas Flux Through Composite Cover Systems 

  Acker, Connor (2020-05)

  EXECUTIVE SUMMARY Validated measurement of landfill gas (LFG) emissions can quantify the effectiveness of landfill cover and LFG collection systems for the management and containment of gases, ranging from trace (< 1%) ...

• POTENTIAL CLIMATE CHANGE IMPACTS TO STREAM TEMPERATURE IN THE MARENGO RIVER HEADWATERS 

  Fehling, Anna C. (2019)

  ABSTRACT Cold-water trout habitat in Wisconsin is projected to significantly decrease as a result of climate change. The extent of habitat loss depends, in part, on groundwater discharge to the stream, which can provide ...

• SEISMIC ARRAYS FOR THE IMAGING OF ALLUVIAL DEPOSITS AND MONITORING ENGINEERING SYSTEMS 

  AK, ESRA (2019)

  As part of the PoroTomo Project, active and passive seismic data were collected with a three component seismometer array in order to image petrophysical properties of a 1500-m by 500-m by 400-m volume in a geothermal ...

• MECHANICAL PROPERTIES OF POORMAN SCHIST AND WESTERLY GRANITE 

  Condon, Katherine (2019)

  We investigate the influence of foliation orientation and fine-scale folding on the static and dynamic elastic properties and unconfined strength of the Poorman schist. The Poorman schist is the dominant rock type at ...

• District-Scale Geothermal System Performance Evaluation using Thermodynamic and Environmental Analysis 

  Thomas, Lauren (2019)

  The focus of the work presented in this thesis aims to improve geothermal heat system efficiency by investigating subsurface thermal properties that influence system performance over the lifetime of the system, as well ...

• Low-Cost Instrumentation Development Using Independent, Self Contained Microcontrollers 

  Richmond, Susan (2019)

  This thesis describes the development and testing of low-cost geophysical and field instrumentation using microcontrollers. While open-source microcontroller boards have traditionally been developed for hobbyists and ...

• THREE-DIMENSIONAL STABILITY ANALYSIS OF BLUFFS ALONG THE LAKE MICHIGAN SHORELINE IN EASTERN WISCONSIN 

  Krueger, Russell (2019)

  The water level in Lake Michigan has been rising since 2013. Historically, erosion of the bluffs along the shoreline has increased during times of lake level increase. Erosion begins at the bluff toe and progresses ...

• ACOUSTIC EMISSIONS ANALYSIS AND 2-D P-WAVE TOMOGRAPHY ALONG A ROUGH LABORATORY FAULT UNDERGOING STICK-SLIP CYCLES 

  JIN, ZIROU (2018)

  The distributions and magnitudes of seismicity within fault systems could be highly influenced by the heterogeneity of shear stress field according to the geometric structure, fractures and asperities. However, the ...

• Assessing the Chemical and Physical Characteristics of Aged Recycled Concrete Aggregate in Road Construction 

  Madras Natarajan, Bharat (2018-05-31)

  EXECUTIVE SUMMARY The use of recycled concrete aggregates (RCA) in pavement construction applications is well established and successful, particularly its use as a granular and/or stabilized base course. However, leaching ...

• Particle Scale Dynamics of Coarse Granular Material 

  Williams, Kyle (2018-01-04)

  Developing a new wheeled or tracked vehicle for military use typically involves physical prototyping of preliminary vehicle designs and field tests to evaluate their performance in a range of conditions. Computational ...

• Rock Mechanics Laboratory Tests Relevant to the in-situ Stress Measurements at the 4850-level, Homestake Mine, Lead, South Dakota 

  Vigilante, Peter (2018-01-03)

  Laboratory rock mechanics experiments were conducted on cores taken from the Sanford Underground Research Facility (SURF) (formerly of Homestake Mine) in Lead, South Dakota. Strength properties and their anisotropy were ...

• Methods for Testing the Effect of Hydraulic Gradient on the Polymer Elution of Polymer GCLs 

  Reybrock, William (2018-01-03)

  Geosynthetic Clay Liners (GCLs) were developed in the 1980’s as an alternative landfill liner or cover material. GCLs are primarily comprised of a layer of processed sodium bentonite (Na-B), generally 7-10 mm thick, ...

• Multi-Sourced Geologic Data Integration: A Time-Based Approach 

  Andelman, Elliott (2018-01-03)

  Complications in geological modeling are often made worse by the wide range of formats in which geologic data are stored. When crossing state lines, the names and interpretations of geologic formations may vary, individual ...

• District-Scale Ground Heat Exchange Performance with Fiber Optic Distributed Temperature Sensing 

  McDaniel, Adam Louis (2018-01-03)

  Chapter 1: Introduction Ground-source heat pumps (GSHP) systems have great potential as an energy-efficient alternative to conventional space heating and cooling systems. The basic principal behind GSHP technology is ...

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