Journal articleEnergy Conversion and Management · January 15, 2026
Former oil/gas wells can be converted into geothermal wells by retrofitting them with a coaxial borehole heat exchanger (CBHE). While previous research has largely focused on direct heating applications for retrofitted vertical oil/gas wells, most onshore ...
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Journal articleWater Resources Research · July 1, 2025
In 2022, 2023 and 2024, flash droughts in the U.S. Midwest caused the lower Mississippi River to drop to record low levels during corn and soybean harvest season. Grain barges that move the crops downriver to New Orleans for export were forced to reduce th ...
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Journal articleEnergy Conversion and Management X · October 1, 2024
Enhanced Geothermal Systems (EGS) produce renewable power that can complement variable renewable sources such as wind and solar, but EGS is expensive to deploy due to high cost of drilling geothermal wells. Repurposing abandoned or declining oil and gas we ...
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Journal articleEuropean Journal on Criminal Policy and Research · June 1, 2024
This study examines the effects of sanctions implemented by the European Union and the United States of America against the Russian Federation following the latter’s annexation of the Crimea Peninsula and invasion of Eastern Ukraine. The analysis focuses o ...
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Journal articleEastern Economic Journal · April 1, 2024
We analyse the effects of sanctions implemented by the European Union against Russia following the latter’s annexation of Crimea in 2014. Indirect effects of sanctions on its non-prohibited exports to Russia are examined using a gravity model of trade that ...
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Journal articleCommunications in Transportation Research · December 1, 2023
Global supply chain disruptions caused by the six-day blockage of the Suez Canal in March 2021 and the reduction in shipping through the Bosporus Strait since the onset of the Ukraine War in February 2022 are recent demonstrations of the critical importanc ...
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Journal articleCommunications in Transportation Research · December 1, 2023
The authors regret that the header of Table 4 was missed. Table 4 should be as follows:[Formula presented] ...
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Journal articleSustainable Energy Technologies and Assessments · December 1, 2023
Current market potential for biogas-to-energy projects in the United States is analyzed based on levelized cost of energy (LCOE) estimates for producing renewable electricity, compressed natural gas (bio-CNG) and renewable natural gas at 2,837 landfills, w ...
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Journal articleGeophysics · January 1, 2021
It has been shown that accurate predictions of compressional and shear-wave velocities can be derived from measurements of clay content, porosity, and bulk density. In this paper, we test the efficacy of using a sequence of established petrophysical formul ...
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Journal articleApplied energy · December 2020
National energy security depends on a stable network of international trade in not only primary energy (e.g., crude oil and natural gas) and secondary energy (electricity), but also embodied energy. The latter consists of both direct energy used to directl ...
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Journal articleProceedings of the National Academy of Sciences of the United States of America · June 2020
Free hydrogen (H2) is a basal energy source underlying chemosynthetic activity within igneous ocean crust. In an attempt to systematically account for all H2 within young oceanic lithosphere (<10 Ma) near the Mid-Ocean Ridge (MOR), we ...
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Journal articleEnergy Policy · May 1, 2020
Persian Gulf Countries (PGC) are collectively the world's largest exporter of fuels. The vast majority of these fuels are shipped via maritime routes and require transit through the Strait of Hormuz. As such, the Strait of Hormuz is considered the most imp ...
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Journal articleEnvironmental science & technology · April 2019
Thermoelectric power plants with once-through cooling systems generated 30% (∼300 GW) of U.S. electricity in 2016. Factors that reduce once-through cooling capacity and thus power output are environmental regulations, warming surface waters, and drought. T ...
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Journal articleEnvironmental science & technology · September 2016
Modeling studies predict that droughts and hotter water and air temperatures caused by climate warming will reduce the efficiency (η) of thermoelectric plants by 0.12-0.45% for each 1 °C of warming. We evaluate these predictions using historical performanc ...
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Journal articleEnvironmental science & technology · February 2016
This paper presents a first-order analysis of the feasibility and technical, environmental, and economic effects of large levels of solar photovoltaic (PV) penetration within the services areas of the Duke Energy Carolinas (DEC) and Duke Energy Progress (D ...
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Journal articleGeophysical Research Letters · January 1, 2016
It has recently been estimated that serpentinization within continental lithosphere produces H2 at rates comparable to oceanic lithosphere (both are ~1011 mol H2/yr). Here we present a simple model that suggests that H ...
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Journal articleEnergy Policy · January 1, 2015
Between 2008-2012, electricity generated (GWh) from coal, the longtime dominant fuel for electric power in the US, declined 24%, while electricity generated from natural gas, wind and solar grew by 39%, 154%, and 400%, respectively. These shifts had major ...
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Journal articleApplied Energy · January 1, 2014
We present a model for rapidly costing and mapping out the cheapest option for organizing infrastructure to transport and store the CO2 emissions that might be captured in United States if carbon capture and storage (CCS) is deployed. We present the organi ...
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Journal articleApplied Energy · January 1, 2014
Energy storage systems (ESSs) can increase power system stability and efficiency, and facilitate integration of intermittent renewable energy, but deployment of ESSs will remain limited until they achieve an attractive internal rate of return (IRR). Linear ...
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Journal articleEnvironmental science & technology · May 2013
Low natural gas prices and stricter, federal emission regulations are promoting a shift away from coal power plants and toward natural gas plants as the lowest-cost means of generating electricity in the United States. By estimating the cost of electricity ...
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Journal articleGeophysical Research Letters · October 16, 2012
One potential way to geologically sequester captured CO2 emissions is to inject them below the seafloor into marine sedimentary strata where pressures and temperatures would trap the CO2 through "self-sealing" gravitational and hydrat ...
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Journal articleEnergy Economics · September 1, 2012
While numerous studies find that deep-saline sandstone aquifers in the United States could store many decades worth of the nation's current annual CO 2 emissions, the likely cost of this storage (i.e. the cost of storage only and not capture and ...
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Journal articleGeology · June 1, 2012
Net-depositional submarine canyons are common in continental slope strata, but how they survive and prograde on constructional margins is poorly understood. In this study we present field evidence for the coevolution of a submarine canyon and the adjacent ...
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Journal articleCarbon Management · April 1, 2012
Background: The combustion of municipal solid waste (MSW) to generate heat or electricity (waste-to-energy [WTE]) could reduce net GHG emissions in the USA compared with combusting methane from landfills. Moreover, negative CO 2 emissions could ...
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Journal articleEnvironmental science & technology · April 2012
Geological storage studies thus far have not evaluated the scale and cost of the network of distribution pipelines that will be needed to move CO(2) from a central receiving point at a storage site to injection wells distributed about the site. Using possi ...
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Journal articleEnergy Policy · October 1, 2011
Climate change policy involving a price on carbon would change the mix of power plants and the amount of water they withdraw and consume to generate electricity. We analyze what these changes could entail for electricity generation in the United States und ...
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Journal articleGeomorphology · July 15, 2011
Submarine canyons can efficiently drain sediments from continental margins just as river systems do in subaerial catchments. Like in river systems, submarine canyons are often arranged as complex drainage networks that evolve from patterns of erosion and d ...
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Journal articleJournal of environmental quality · March 2011
Lake Powell is a large reservoir in Utah and Arizona that has experienced large changes in water level during a recent drought. As a first step in assessing the connection between hydrologic and chemical changes at Lake Powell, we characterized the particl ...
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Journal articleEnergy Conversion and Management · December 1, 2010
A number of existing models for the transport of CO2 in carbon capture and storage assume the CO2 will be carried through isolated pipelines that connect each source to the nearest storage site. However storage costs will vary geograp ...
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Journal articleMarine Geology · April 15, 2010
We present geophysical and core evidence showing how subsidence caused by forearc shortening has accommodated Late Pleistocene and Holocene sediments supplied to the tectonically active Waipaoa shelf (NZ), limiting off-shelf export during the early sea lev ...
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Journal articleEcology and Society · January 1, 2010
There is growing scientific evidence that improving the sustainability of consumer products can lead to significant gains in global sustainability. Historically, environmental policy has been managed by bureaucracies and institutions in a mechanistic manne ...
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Journal articleJournal of Geophysical Research Earth Surface · March 4, 2009
Submarine canyons are shaped by turbidity currents flowing down the continental slope. But canyon morphology also depends on the patterns of sediment deposition that drive long-term outbuilding of continental margins. Relating the importance of each to the ...
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Journal articleEnvironmental science & technology · March 2009
Carbon sequestration in sandstone saline reservoirs holds great potential for mitigating climate change, but its storage potential and cost per ton of avoided CO2 emissions are uncertain. We develop a general model to determine the maximum theoretical cons ...
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Journal articleJournal of Sedimentary Research · January 1, 2008
Clinoform morphologies and growth patterns are typically viewed as the product of a particular mode of sediment transport, but process-specific models for their generation from turbidity currents are few, despite observations of turbidity currents on moder ...
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Journal articleLandscape Ecology · 2008
The dispersal of individuals among marine populations is of great importance to metapopulation dynamics, population persistence, and species expansion. Understanding this connectivity between distant populations is key to their effective conservation and m ...
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Journal articleJournal of Geophysical Research Earth Surface · December 24, 2007
Rapid deposition of fine-grained sediments can lead to overpressure buildup along the fronts of prograding sedimentary bodies (clinoforms) ranging from deltas to continental margins. Overpressure reduces shear strength, which can lead to failure of submari ...
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Journal articleContinental Shelf Research · February 1, 2007
Flood deposition and storm reworking of sediments on the inner shelf can change the mixture of grain sizes on the seabed and thus its porosity, bulk density, bulk compressional velocity and reflectivity. Whether these changes are significant enough to be d ...
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Journal articleIEEE Journal of Oceanic Engineering · April 1, 2006
Geoacoustic properties of the seabed have a controlling role in the propagation and reverberation of sound in shallow-water environments. Several techniques are available to quantify the important properties but are usually unable to adequately sample the ...
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Journal articleJournal of Geophysical Research Earth Surface · June 1, 2005
Fluviodeltaic systems commonly display a compound-clinoform geometry that consists of a subaerial/subaqueous delta couplet. The extent of subaqueous delta development varies significantly and, in modern systems, is a function of fluvial input and basin hyd ...
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Journal articleGeology · June 1, 2005
We analyzed >10,000 topographic slope histograms subsampled from digital elevation models (DEMs) of 28 landscapes throughout the continental United States. These landscapes are made up of diverse lithologies and have different climatic and tectonic histori ...
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Journal articleJournal of Sedimentary Research · January 1, 2005
Minibasins on the continental slope are formed by the movement of salt or mud layers in the subsurface. The north slope of the Gulf of Mexico (GOM), for example, is riddled with salt-withdrawal minibasins ranging in scale from a few kilometers to tens of k ...
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Journal articleMarine Geology · January 30, 2004
The Unimak (eastern Aleutians) earthquake of April 1, 1946 is an enigma. The earthquake (MS=7.1) produced a disproportionately large tsunami (Mt=9.3) which killed 167 people. The tsunami was highly directional, and projected its large ...
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Journal articleScience (New York, N.Y.) · April 2002
The angles of energy propagation of semidiurnal internal tides may determine the average gradient of continental slopes in ocean basins (approximately 2 to 4 degrees). Intensification of near-bottom water velocities and bottom shear stresses caused by refl ...
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Journal articleAAPG Bulletin · January 1, 2002
Experimental strata formed in the new Experimental Earthscape (XES) basin at the St. Anthony Falls Laboratory of the University of Minnesota offer a realistic model for simulating the seismic response of natural strata and thus for advancing understanding ...
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Journal articleComputers and Geosciences · July 1, 2001
Sediment compaction and corresponding porosity variations can modeled by a simple exponential with depth. The porosity solution is derived analytically as a complicated function of pore water pressure, but the underlying form is shown as to approximate an ...
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Journal articleComputers and Geosciences · July 1, 2001
BANG1D simulates the mechanics of a subaqueous, turbid surge, a seafloor-failure-induced turbidity current that behaves like a snow avalanche or a pyroclastic burst. BANG1D uses the one-dimensional, layer-averaged equations for the conservation of fluid, s ...
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Journal articleGSA Today · January 1, 2001
Stratigraphy has been a descriptive science for most of its history. Recently, thanks to the development of the mechanistic view of Earth embodied in plate tectonics and to improvements in our understanding of sediment dynamics, the stratigraphic community ...
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Journal articleMarine Geology · September 15, 2000
The morphometric analysis of submarine landslides in four distinctly different tectonic environments on the continental slopes of Oregon, central California, Texas, and New Jersey provides useful insight into submarine process, including sediment transport ...
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Journal articleGeology · January 1, 2000
The basic morphology of the continental shelf, slope, and rise on passive continental margins has many variations in the modern ocean environment. Through using a satellite-derived bathymetric data set of the global ocean, we have developed a classificatio ...
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Journal articleGeology · 2000
The basic morphology of the continental shelf, slope, and rise on passive continental margins has many variations in the modern ocean environment. Through using a satellite-derived bathymetric data set of the global ocean, we have developed a classificatio ...
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Journal articleSurveying and Land Information Systems · March 1, 1999
Grids that integrate land and seafloor elevations are needed by planners using LIS/GIS software to manage the U.S. coastal zone which includes the country's 200-mile offshore limit. The National Geophysical Data Center is addressing this need by assembling ...
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Journal articleMarine Geology · February 2, 1999
Rapid estimates of regional submarine slope stability can be obtained using 1-D infinite-slope analysis or empirical 2-D analyses, such as the log-spiral or φ-circle methods. In these methods, slope stability is evaluated along a pre-defined slip surface b ...
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Journal articleJournal of Geophysical Research Solid Earth · October 10, 1998
Clinoforms are the building blocks of prograding stratigraphic sequences. These sigmoid-shaped surfaces can be found forming today on modern deltas. Sedimentation rate profiles over the clinoform surface of these deltas show low rates of sediment accumulat ...
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Journal articleLeading Edge Tulsa OK · January 1, 1997
Gravity gradiometry is a Gulf Coast exploration technique that records gravity gradients, which directly recovers sharp signals over the edges of structures. Thus, the concept of gravity gradiometry is 3-D gravity. Gravity gradiometry anomalies reflect the ...
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Journal articlePetroleum Engineer International · October 1, 1996
Industry estimates of the hydrocarbon reserve potential for the U.S. sector of the deepwater Gulf of Mexico exceed 20 billion boe. However, the ultra-deep waters of the Gulf remain largely a geological and economic mystery. In order to successfully explore ...
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Journal articleBasin Research · September 1, 1996
Rifted continental margins generally display an interior, low-relief, highly weathered upland area and a deeply incised, high-relief coastal area. The boundary between the two zones is commonly demarcated by an abrupt, seaward-facing escarpment. We investi ...
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Journal articleBulletin of the Geological Society of America · 1996
A simple, physically based computer model of continental slope evolution is used to investigate the sequence of submarine canyon formation. The model simulates submarine canyons as evolving under the influence of sedimentation, slope failure, sediment flow ...
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Journal articleMarine Geophysical Research · January 1, 1996
Drainage-extraction algorithms traditionally used for extracting river networks and watersheds from gridded land topography are applied to gridded multibeam bathymetry of the mid-California margin. The algorithms are used to automatically map two regional ...
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Journal articleMarine Geophysical Researches · January 1, 1996
This special issue is divided into three sections: data processing and enhancement; seabed classification; and seafloor feature extraction. Section I comprises three papers: shallow-water imaging multibeam sonars; improved processing of Hydrosweep DS multi ...
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Journal articleGeology · January 1, 1996
Extensive high-resolution, multibeam bathymetry of five U.S. continental margins provides new, detailed information about the angle of continental slopes in different sedimentary and tectonic settings. The steepest continental slope examined is the passive ...
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Journal articleBulletin of the Geological Society of America · 1996
A simple, physically based computer model of continental slope evolution is used to investigate the sequence of submarine canyon formation. The model simulates submarine canyons as evolving under the influence of sedimentation, slope failure, sediment flow ...
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Journal articleGeology · 1996
Extensive high-resolution, multibeam bathymetry of five US continental margins provides new, detailed information about the angle of continental slopes in different sedimentary and tectonic settings. Frequency grids of local slope magnitude vs depth and di ...
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Journal articleGeological Society of America Bulletin · 1994
Multibeam bathymetry and seismic reflection profiles of the New Jersey continental slope reveals a series of abandoned and now-buried submarine canyons that have apparently influenced the development of modern canyons. Re-use of the lower slope reach of th ...
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Journal articleJournal of Geophysical Research · January 1, 1994
The scaling properties of synthetic topographic surfaces and digital elevation models (DEMs) of topography are examined by analyzing their "structure functions', i.e., the qth order powers of the absolute elevation differences: Δhq(l) = E {|h(x ...
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Journal articleAmerican Association of Petroleum Geologists Bulletin · January 1, 1994
Intraslope basins on the lower eastern Louisiana continental slope are modern analogs of large oil- and gas-charged basins infilled on the upper Louisiana slope and buried landward beneath the shelf. High-resolution, gridded multibeam bathymetry and single ...
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Journal articleGeological Society of America Bulletin · 1994
Multibeam bathymetry and seismic reflection profiles of the New Jersey continental slope reveals a series of abandoned and now-buried submarine canyons that have apparently influenced the development of modern canyons. Re-use of the lower slope reach of th ...
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Journal articleGeological Society of America Bulletin · 1994
Multibeam bathymetry and seismic reflection profiles of the New Jersey continental slope reveals a series of abandoned and now-buried submarine canyons that have apparently influenced the development of modern canyons. Re-use of the lower slope reach of th ...
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Journal articleUS Geological Survey Circular · January 1, 1992
Drainage-extraction algorithms are applied to grided bathymetry of the US continental margin. The algorithms are shown to be extremely useful in mapping submarine canyons, deep-sea channels, and the areas of the sea floor these systems drain. Subjective pa ...
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Journal articleOceans Conference Record IEEE · December 1, 1991
A 20 × 20 mile area of the continental slope between Lindenkohl and Hendrickson Canyons and between the water depths of 200 and 2300 meters has been surveyed in sequential field programs. The instruments used include the Seabeam and Hydrosweep multibeam ec ...
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Journal articleOceans Conference Record IEEE · December 1, 1991
Multifrequency side-looking sonar backscatter data were collected with an instrument towed within the vicinity of the ocean floor through the Monterey Canyon and Fan during September, 1990. The main objective was to examine the textural property variations ...
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Journal articleMarine Geology · January 1, 1989
A detailed echo-character map based on more than 50,000 km of 3.5 kHz echograms reveals the relative importance of contour currents, turbidity currents and mass-wasting processes for the upper 50-100 m of sea-floor sediments along the U.S. continental marg ...
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