Kristina Keating
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View article: Hydraulic conductivity estimation by NMR data in unconsolidated geological materials: insights from SDR model calibrations
Hydraulic conductivity estimation by NMR data in unconsolidated geological materials: insights from SDR model calibrations Open
View article: Longitudinal to transverse relaxation time ratio (<i>T</i>1/<i>T</i>2) in unconsolidated geological materials: a perspective from 2-D borehole and laboratory NMR measurements
Longitudinal to transverse relaxation time ratio (<i>T</i>1/<i>T</i>2) in unconsolidated geological materials: a perspective from 2-D borehole and laboratory NMR measurements Open
SUMMARY This study investigates the longitudinal (T1) to transverse (T2) relaxation time ratios in unconsolidated geological materials to determine how they vary across different geological units. Assessing the T1/T2 ratio can inform about…
View article: Geophysical signatures of soil AFFF contamination from spectral induced polarization and low field nuclear magnetic resonance methods
Geophysical signatures of soil AFFF contamination from spectral induced polarization and low field nuclear magnetic resonance methods Open
View article: The role of peat-forming bofedales in sustaining baseflow in the humid puna
The role of peat-forming bofedales in sustaining baseflow in the humid puna Open
Study region: Humid puna of the Central Andes, Perú Study focus: Bofedales, or peat-forming wetlands, are a characteristic feature of the humid puna - a high elevation, seasonally dry grass- and shrub-land throughout the Central Andes. Des…
View article: Seasonal water storage in peat-forming bofedales sustains baseflow in the Andes
Seasonal water storage in peat-forming bofedales sustains baseflow in the Andes Open
Humid punaBofedales, or low gradient peat-forming wetlands, are a characteristic feature of thehumid puna - a high elevation, seasonally dry grass- and shrub-land found throughoutthe Central Andes. Despite the importance of the humid puna …
View article: Interdisciplinary Water Development in the Peruvian Highlands: The Case for Including the Coproduction of Knowledge in Socio-Hydrology
Interdisciplinary Water Development in the Peruvian Highlands: The Case for Including the Coproduction of Knowledge in Socio-Hydrology Open
Agrarian communities in the Peruvian Andes depend on local water resources that are threatened by both a changing climate and changes in the socio-politics of water allocation. A community’s local autonomy over water resources and its capa…
View article: The effect of magnetic susceptibility and magnetic field strength on porosity estimates determined from low-field nuclear magnetic resonance
The effect of magnetic susceptibility and magnetic field strength on porosity estimates determined from low-field nuclear magnetic resonance Open
View article: Monitoring real‐time curing of epoxies in situ using single‐sided NMR
Monitoring real‐time curing of epoxies in situ using single‐sided NMR Open
Adhesively bonded joints using epoxy are widely used in aircraft and aerospace structures. Quality control and defect detection during epoxy curing in such applications is critical. We used single‐sided nuclear magnetic resonance (NMR) to …
View article: Combined geophysical measurements provide evidence for unfrozen water in permafrost in the Adventdalen valley in Svalbard
Combined geophysical measurements provide evidence for unfrozen water in permafrost in the Adventdalen valley in Svalbard Open
Quantifying the unfrozen water content of permafrost is critical for assessing impacts of surface warming on the reactivation of groundwater flow and release of greenhouse gasses from degrading permafrost. Unfrozen water content was determ…
View article: Combined Geophysical Measurements Provide Evidence for Unfrozen Water in Permafrost in the Adventdalen Valley in Svalbard
Combined Geophysical Measurements Provide Evidence for Unfrozen Water in Permafrost in the Adventdalen Valley in Svalbard Open
Quantifying the unfrozen water content of permafrost is critical for assessing impacts of surface warming on the reactivation of groundwater flow and release of greenhouse gasses from degrading permafrost. Unfrozen water content was determ…
View article: On Permeability Prediction From Complex Conductivity Measurements Using Polarization Magnitude and Relaxation Time
On Permeability Prediction From Complex Conductivity Measurements Using Polarization Magnitude and Relaxation Time Open
Geophysical length scales determined from complex conductivity (CC) measurements can be used to estimate permeability when the electrical formation factor F is known. Two geophysical length scales have been proposed: (1) the specific polar…
View article: A laboratory study to estimate pore geometric parameters of sandstones using complex conductivity and nuclear magnetic resonance for permeability prediction
A laboratory study to estimate pore geometric parameters of sandstones using complex conductivity and nuclear magnetic resonance for permeability prediction Open
We estimate parameters from the Katz and Thompson permeability model using laboratory complex electrical conductivity (CC) and nuclear magnetic resonance (NMR) data to build permeability models parameterized with geophysical measurements. …
View article: Integrated Geophysical Measurements for Bioremediation Monitoring: Combining Spectral Induced Polarization, Nuclear Magnetic Resonance and Magnetic Methods
Integrated Geophysical Measurements for Bioremediation Monitoring: Combining Spectral Induced Polarization, Nuclear Magnetic Resonance and Magnetic Methods Open
This documents contains the final report for the project "Integrated Geophysical Measurements for Bioremediation Monitoring: Combining Spectral Induced Polarization, Nuclear Magnetic Resonance and Magnetic Methods" (DE-SC0007049) Executive…
View article: Anomalous solute transport in saturated porous media: Relating transport model parameters to electrical and nuclear magnetic resonance properties
Anomalous solute transport in saturated porous media: Relating transport model parameters to electrical and nuclear magnetic resonance properties Open
The advection‐dispersion equation (ADE) fails to describe commonly observed non‐Fickian solute transport in saturated porous media, necessitating the use of other models such as the dual‐domain mass‐transfer (DDMT) model. DDMT model parame…