Burke J Minsley

Burke J Minsley
United States Geological Survey | USGS · Geology, Geophysics and Geochemistry Science Center

PhD

About

113
Publications
21,182
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
2,245
Citations
Citations since 2016
15 Research Items
1317 Citations
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200

Publications

Publications (113)
Article
Full-text available
The diversity of geophysical methods and datatypes, as well as the isolated nature of various specialties (e.g., electromagnetic, seismic, potential fields) leads to a profusion of separate data file formats and documentation conventions. This can hinder cooperation and reduce the impact of datasets researchers have invested in heavily to collect a...
Article
Full-text available
Manganese (Mn) concentrations and the probability of arsenic (As) exceeding the drinking-water standard of 10 μg/L were predicted in the Mississippi River Valley alluvial aquifer (MRVA) using boosted regression trees (BRT). BRT, a type of ensemble-tree machine-learning model, were created using predictor variables that affect Mn and As distribution...
Article
Full-text available
The Mississippi Alluvial Plain hosts one of the most prolific shallow aquifer systems in the United States but is experiencing chronic groundwater decline. The Reelfoot rift and New Madrid seismic zone underlie the region and represent an important and poorly understood seismic hazard. Despite its societal and economic importance, the shallow subsu...
Technical Report
Airborne electromagnetic (AEM), magnetic, and radiometric data were acquired November 2018 to February 2019 along 16,816 line-kilometers (line-km) over the Mississippi Alluvial Plain (MAP). These data were collected to contribute high-resolution information about subsurface geologic structure that will be used to inform hydrologic models, water res...
Technical Report
Airborne electromagnetic (AEM), magnetic, and radiometric data were acquired November 2019 to March 2020 along 24,030 line-kilometers (line-km) over the Mississippi Alluvial Plain (MAP). These data were collected to contribute high-resolution information about subsurface geologic structure that will be used to inform hydrologic models, water resour...
Technical Report
In late February to early March 2018, the U.S. Geological Survey acquired 2,364 line-kilometers (km) of airborne electromagnetic, magnetic, and radiometric data in the Shellmound, Mississippi study area. The purpose of this survey is to contribute high-resolution information about subsurface geologic structure to inform groundwater models, water re...
Technical Report
Airborne electromagnetic (AEM), magnetic, and radiometric data were acquired in late February to early March 2018 along 2,364 line-kilometers in the Shellmound, Mississippi study area. An important driver for this survey is a managed aquifer recharge pilot project developed by the U.S. Department of Agriculture Agricultural Research Service investi...
Technical Report
Fire can be a significant driver of permafrost change in boreal landscapes, altering the availability of soil carbon and nutrients that have important implications for future climate and ecological succession. However, not all landscapes are equally susceptible to fire-induced change. As fire frequency is expected to increase in the high latitudes,...
Article
Full-text available
Characterization of permafrost, particularly warm and near-surface permafrost which can contain significant liquid water, is critical to understanding complex interrelationships with climate change, ecosystems, and disturbances such as wildfires. Understanding the vulnerability and resilience of permafrost requires an interdisciplinary approach, re...
Conference Paper
Characterization of permafrost, particularly warm and near-surface permafrost (which can contain significant unfrozen water), is critical to understanding complex interrelationships with climate change, ecosystems, and disturbances such as wildfires. Understanding the vulnerability and resilience of permafrost landscapes to environmental change req...
Technical Report
Fire can be a significant driver of permafrost change in boreal landscapes, altering the availability of soil carbon and nutrients that have important implications for future climate and ecological succession. However, not all landscapes are equally susceptible to fire-induced change. As fire frequency is expected to increase in the high latitudes,...
Conference Paper
Fire can be a significant driver of permafrost change in boreal landscapes, altering the availability of soil carbon and nutrients that have important implications for future climate and ecological succession. However, not all landscapes are equally susceptible to fire-induced change. As fire frequency is expected to increase in the high latitudes,...
Conference Paper
Recent increases in air temperature and disturbance activity have led to amplified rates of permafrost degradation and carbon remobilization across portions of Alaska. Further warming, coupled with increases in disturbance frequency and severity (i.e. wildfire, thermokarst), may exacerbate permafrost thaw and disappearance, which would have a profo...
Article
Geological structures key to understanding groundwater resources in Timor-Leste?s Baucau Plateau are mapped using an airborne electromagnetic (AEM) survey. A comprehensive assessment of model structural uncertainty is conducted using a Bayesian Markov chain Monte Carlo algorithm, and an approach for translating geophysical to geological model uncer...
Conference Paper
Aquifer storage and recovery (ASR) is a viable means of enhancing the water storage capacity of Kuwait, enabling sustainable water management options such as the storage of wastewater treated to tertiary levels. For the purpose of a baseline geophysical survey to characterize the Dammam Formation in the Kabd well field, which is a target aquifer fo...
Article
Full-text available
A coupled hydrogeophysical forward and inverse modeling approach is developed to illustrate the ability of frequency-domain airborne electromagnetic (AEM) data to characterize subsurface physical properties associated with sublacustrine permafrost thaw during lake-talik formation. Numerical modeling scenarios are evaluated that consider non-isother...
Article
A 2D seismic time-lapse inversion approach can image the evolution of seismic velocities over time and space. The forward modeling is based on solving the eikonal equation using a second- order fast-marching method. Wave paths are represented by Fresnel volumes rather than by conventional rays. This approach accounts for complex velocity models and...
Conference Paper
A joint effort by the US Geological Survey (USGS) and the Alaska Division of Geological & Geophysical Surveys (DGGS) aims to add value to public domain airborne electromagnetic (AEM) data, collected in Alaska, through the application of newly developed advanced inversion methods to produce resistivity depth sections along flight lines. Derivative p...
Conference Paper
Full-text available
Permafrost is a key characteristic of cold region landscapes, yet detailed assessments of how the subsurface distribution of permafrost impacts the environment, hydrologic systems, and infrastructure are lacking. Data acquired from several airborne electromagnetic (AEM) surveys in Alaska provide significant new insight into the spatial extent of pe...
Article
Details of Earth's shallow subsurface - a key component of the critical zone (CZ) - are largely obscured because making direct observations with sufficient density to capture natural characteristic spatial variability in physical properties is difficult. Yet this inaccessible region of the CZ is fundamental to processes that support ecosystems, soc...
Article
A coupled hydrogeophysical forward and inverse modeling approach is developed to illustrate the ability of frequency-domain airborne electromagnetic (AEM) data to characterize subsurface physical properties associated with sublacustrine permafrost thaw during lake talik formation. Several scenarios are evaluated that consider the response to variab...
Article
Full-text available
Systematic calibration errors must be taken into account because they can substantially impact the accuracy of inverted subsurface resistivity models derived from frequency-domain electromagnetic data, resulting in potentially misleading interpretations. We have developed an approach that uses data acquired at multiple elevations over the same loca...
Conference Paper
Martis Creek Dam, an earthen dam constructed by the U.S. Army Corps of Engineers in Truckee, Calif., has experienced seepage issues since it was built in 1972. The seepage, which occurs primarily through the surficial glacial outwash on the west abutment of the dam, has been documented during six reservoir test fills between 1973 and 1995. As a res...
Conference Paper
Public-domain airborne geophysical survey data have been collected in Alaska by the State of Alaska, Division of Geological and Geophysical Surveys (DGGS) and by the U.S. Geological Survey (USGS). The DGGS acquired airborne electromagnetic magnetic, and in some surveys, radiometric data. The USGS data consist mostly of total field magnetic data. Th...
Conference Paper
Full-text available
Mineralization in the Styx River area of south-central Alaska consists of porphyry deposits, plutonic complexes, dike swarms, and volcanic fields exposed intermittently along the Styx River headwaters in the western Alaska Range. Active exploration targets include porphyry copper ± molybdenum ± gold, reduced intrusion-related gold, and polymetallic...
Article
Full-text available
Traditional methods used to invert gravity data are generally based on smoothness as a regular-izer and the time-lapse inversion of gravity data is traditionally based on sequential inversion. A smooth density model can be in contradiction with the known geology of the target and sequential time-lapse inversion may lead to the presence of artefacts...
Article
Full-text available
Machine‐learning regression tree models were used to extrapolate airborne electromagnetic resistivity data collected along flight lines in the Yukon Flats Ecoregion, central Alaska, for regional mapping of permafrost. This method of extrapolation (r = 0.86) used subsurface resistivity, Landsat Thematic Mapper (TM) at‐sensor reflectance, thermal, TM...
Article
Full-text available
In July 2012, 72 hydrogeophysicists from around the world gathered at the Hydrogeophysics Workshop in Boise, Idaho, USA. This was the first workshop to be jointly sponsored by the Society of Exploration Geophysicists (SEG) and the American Geophysical Union (AGU), and brought together members from both societies, primarily from the Near-Surface Geo...
Article
Full-text available
Exploration geochemical and mineralogical studies by the U.S. Geological Survey at the Pebble porphyry Cu-Au-Mo deposit were designed to (1) determine whether the concealed deposit can be detected with surface samples, (2) better understand the processes of metal migration from the deposit to the surface, and (3) test existing methods for assessing...
Conference Paper
The Alaska Highway Corridor is a region with a rich variety of engineering applications of geophysics across a wide range of scales. Stretching 300 kilometers from Delta Junction, Alaska to the Canadian Border, with terrain spanning glacial mountain highlands to boggy river lowlands, the area provides a challenge to interpretation. Recently, resea...
Article
Full-text available
Linkages between permafrost distribution and lake surface-area changes in cold regions have not been previously examined over a large scale due to the paucity of subsurface permafrost information. Here, a first large-scale examination of these linkages is made over a 5,150-km2 area of Yukon Flats, Alaska, USA, by evaluating the relationship between...
Article
Rapid development of coalbed natural gas (CBNG) production in the Powder River Basin (PRB) of Wyoming has occurred since 1997. National attention related to CBNG development has focused on produced water management, which is the single largest cost for on-shore domestic producers. Low-cost treatment technologies allow operators to reduce their disp...
Article
SUMMARY Bayesian Markov chain Monte Carlo (MCMC) algorithms are introduced for the analysis of one- and two-dimensional airborne frequency-domain electromagnetic datasets. Substantial information about parameter uncertainty, non-uniqueness, correlation, and depth of investigation are revealed from the MCMC analysis that cannot be obtained using tra...
Conference Paper
Full-text available
We present a study of a large airborne electromagnetic and magnetic survey acquired over the Alaska Highway Corridor. Several aspects of the conductivity structure are of interest in this area: very near surface conductivity to characterize active layer thickness, mid-depth conductivity for permafrost and geohazard applications, and deeper structur...
Article
Repeat frequency-domain electromagnetic (FDEM) surveys have been acquired over agricultural fields in the Powder River Basin (PRB), Wyoming, where subsurface drip irrigation is being utilized for the beneficial dispersal of coalbed methane produced water. The purpose of the FDEM surveys is to monitor changes in subsurface electrical properties due...
Article
We propose a cross-hole imaging approach based on seismoelectric conversions (SC) asso-ciated with the transmission of seismic waves from seismic sources located in a borehole to receivers (electrodes) located in a second borehole. The seismoelectric (seismic-to-electric) problem is solved using Biot theory coupled with a generalized Ohm's law with...
Article
The timing of spring leaf development, trajectories of summer leaf area, and the timing of autumn senescence have profound impacts to the water, carbon, and energy balance of ecosystems, and are likely influenced by global climate change. Limited field-based and remote-sensing observations have suggested complex spatial patterns related to geograph...
Article
A recent evaluation of Martis Creek Dam highlighted the potential for dam failure due to either seepage or an earthquake on nearby faults. In 1972, the U.S. Army Corps of Engineers constructed this earthen dam, located within the Truckee Basin to the north of Lake Tahoe, CA for water storage and flood control. Past attempts to raise the level of th...
Article
Full-text available
Many lakes in northern high latitudes have undergone substantial changes in surface area over the last four decades, possibly as a result of climate warming. In the discontinuous permafrost of Yukon Flats, interior Alaska (USA), these changes have been non-uniform across adjacent watersheds, suggesting local controls on lake water budgets. Mechanis...
Article
Full-text available
The evolution of permafrost in cold regions is inextricably connected to hydrogeologic processes, climate, and ecosystems. Permafrost thawing has been linked to changes in wetland and lake areas, alteration of the groundwater contribution to streamflow, carbon release, and increased fire frequency. But detailed knowledge about the dynamic state of...
Article
Full-text available
Tomographic imaging problems are typically ill-posed and often require the use of regularization techniques to guarantee a stable solution. Minimization of a weighted norm of model length is one commonly used secondary constraint. Tikhonov methods exploit low-order differential operators to select for solutions that are small, flat, or smooth in on...
Conference Paper
Full-text available
More than 8000 square kilometers of airborne electromagnetic (AEM) data were acquired along the Alaska Highway Corridor in 2005-2006 by the Alaska Department of Natural Resources Division of Geological and Geophysical Surveys. Because this large AEM dataset covers diverse geologic and permafrost settings, it is an excellent testbed for studying the...
Article
Ordinary least squares is used to investigate the ability to detect changes in physical properties using Amplitude Versus Offset (AVO) information collected from seismic data. In order to characterize vertically aligned fractures within a reservoir, this method is extended to Azimuthal AVO (AVOA) analysis. Azimuthal AVO has the potential not only t...
Article
It is important to be able to detect and characterize naturally occurring fractures in reservoirs using surface seismic reflection data. 3D finite difference elastic modeling is used to create simulated surface seismic data over a three layer model and a five layer model. The elastic properties in the reservoir layer of each model are varied to sim...
Article
Full-text available
Self-potential and direct current resistivity surveys are carried out at the Hidden Dam site in Raymond, California to assess present-day seepage patterns and better understand the hydrogeologic mechanisms that likely influence seepage. Numerical modeling is utilized in conjunction with the geophysical measurements to predict variably-saturated flo...
Article
Permafrost has a significant impact on high latitude ecosystems and is spatially heterogeneous. However, only generalized maps of permafrost extent are available. Due to its impacts on subsurface hydrology, lake water levels, vegetation communities, and surface soil deformations, understanding the spatial extents and depth of permafrost are critica...
Article
The number and size of lakes in northern high-latitude regions have undergone significant changes over the last 3 decades or longer, possibly in association with climate warming. In the Yukon Flats Basin (YFB) of interior Alaska, a region underlain by discontinuous permafrost, these changes have not been uniform among lake drainage basins, suggesti...
Article
Permafrost is a predominant physical feature of the planet's Arctic and sub-Arctic regions and a major consideration that impacts climate processes, ecosystem function, water resources, and infrastructure engineering. The U.S. Geological Survey has conducted hydrological, geophysical, and geological studies of the Yukon Flats area within the discon...
Article
Concerns over the impacts of climate change have recently energized research on the potential impacts thawing permafrost may have on groundwater flow, infrastructure, forest health, ecosystems, energy production, CO2 release, and contaminant transport. There is typically little knowledge about subsurface permafrost distributions, such as thickness...
Article
Airborne electromagnetic (AEM) surveys provide densely sampled data over large areas (typically several hundred sq. km) that cannot be covered effectively using ground-based methods. AEM data are inverted to infer the distribution of electrical resistivity structures from shallow depths to several hundred meters. These models convey unparalleled de...
Article
M. Karaoulis (1), D.D. Werkema (3), A. Revil (1,2), A., B. Minsley (4), (1) Colorado School of Mines, Dept. of Geophysics, Golden, CO, USA. (2) ISTerre, CNRS, UMR 5559, Université de Savoie, Equipe Volcan, Le Bourget du Lac, France. (3) U.S. EPA, ORD, NERL, ESD, CMB, Las Vegas, Nevada, USA . (4) USGS, Federal Center, Lakewood, 10, 80225-0046, CO. A...
Article
Induced polarization (more precisely the magnitude and phase of impedance of the subsurface) is measured using a network of electrodes located at the ground surface or in boreholes. This method yields important information related to the distribution of permeability and contaminants in the shallow subsurface. We propose a new time-lapse 3-D modelli...
Article
SUMMARYA meaningful interpretation of geophysical measurements requires an assessment of the space of models that are consistent with the data, rather than just a single, ‘best’ model which does not convey information about parameter uncertainty. For this purpose, a trans-dimensional Bayesian Markov chain Monte Carlo (MCMC) algorithm is developed f...