Results 21 to 30 of about 1,538 (216)

Application of Ground-Penetrating Radar with the Logging Data Constraint in the Detection of Fractured Rock Mass in Dazu Rock Carvings, Chongqing, China

Remote Sensing, 2023
Geologic interpretation results from conventional ground-penetrating radar (GPR) detection methods tend to have a certain degree of uncertainty. In order to improve the reliability of ground-penetrating radars in the detection of rock mass fissures in ...
Wenxing Yuan, Sixin Liu, Qiancheng Zhao, Li Deng, Qi Lu, Lei Pan, Zhilian Li   +6 more
doaj   +1 more source

Improved hydrogeophysical characterization using joint inversion of cross-hole electrical resistance and ground-penetrating radar traveltime data. [PDF]

, 2006
Appropriate regularizations of geophysical inverse problems and joint inversion of different data types improve geophysical models and increase their usefulness in hydrogeological studies.
Revil, Andre, Linde, Niklas, Linde, Niklas,, Pedersen, Laust B.,, Tryggvason, Ari, Pedersen, Laust B., Binley, Andrew, Tryggvason, Ari,   +7 more
core   +1 more source

Review of Ground Penetrating Radar Applications for Water Dynamics Studies in Unsaturated Zone

Remote Sensing, 2022
For water dynamics investigation in unsaturated (vadose) zones, ground penetrating radar is a popular hydro-geophysical method because it is non-invasive for soil, has high resolution and the results have a direct link with water content.
Minghe Zhang, Xuan Feng, Maksim Bano, Huiting Xing, Taihan Wang, Wenjing Liang, Haoqiu Zhou, Zejun Dong, Yafei An, Yinghao Zhang   +9 more
doaj   +1 more source

Spatially extensive estimates of annual accumulation in the dry snow zone of the Greenland Ice Sheet determined from radar altimetry [PDF]

, 2010
We present estimates of accumulation rate along a 200 km transect ranging in elevation from 2750 to 3150 m in the dry snow zone on the western slope of the Greenland Ice Sheet.
Guo, Q., Helm, Veit, Helm, V., de la Peña, S., Mair, D., Shepherd, A., A. Shepherd, Huybrechts, P., Q. Guo, D. Wingham, Cullen, R., S. de la Peña, P. Huybrechts, Hanna, E., Huybrechts, Philippe, V. Helm, Wingham, D., D. Mair, E. Hanna, R. Cullen, Nienow, P., P. Nienow   +21 more
core   +1 more source

Estimating reservoir permeability with borehole radar [PDF]

Geophysics, 2020
ABSTRACT In oil drilling, mud filtrate penetrates into porous formations and alters the compositions and properties of the pore fluids. This disturbs the logging signals and brings errors to reservoir evaluation. Drilling and logging engineers therefore deem mud invasion as undesired and attempt to eliminate its adverse effects ...
Feng Zhou, Iraklis Giannakis, Antonios Giannopoulos, Klaus Holliger, Evert Slob   +4 more
openaire   +4 more sources

Ecohydrologically important subsurface structures in peatlands revealed by ground-penetrating radar and complex conductivity surveys. [PDF]

, 2008
The surface pattern of vegetation influences the composition and humification of peat laid down during the development of a bog, producing a subsurface hydrological structure that is expected to affect both the rate and pattern of water flow.
Lee Slater, Comas, Xavier, Strack, M, Baird, Andrew, Kettridge, Nicholas; id_orcid, Binley, Andrew, Binley, A, Maria Strack, Slater, Lee, Thompson, D, Jol, Harry, Nicholas Kettridge, Strack, Maria, Jol, H, Andrew Baird, Kettridge, Nicholas, Baird, A, Xavier Comas, Thompson, Dan, Slater, L, Dan Thompson, Andrew Binley, Comas, X, Harry Jol   +23 more
core   +1 more source

Consideration of Oblique Incidence in 3-D Imaging of a Planar Interface With a Circular Dipole Array in an Air-Filled Borehole

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
We consider the effects of oblique incidence of a wave on the creation of a 3-D image of a planar interface with an array-type directional borehole radar. In this study, we focus on the situation where the radar probe is close to the planar interface. In
Satoshi Ebihara, Shyuhei Kotani, Kengo Fujiwara, Yuta Kimura, Takaaki Shimomura, Ryota Uchimura   +5 more
doaj   +1 more source

Computing Localized Breakthrough Curves and Velocities of Saline Tracer from Ground Penetrating Radar Monitoring Experiments in Fractured Rock

Energies, 2021
Solute tracer tests are an established method for the characterization of flow and transport processes in fractured rock. Such tests are often monitored with borehole sensors which offer high temporal sampling and signal to noise ratio, but only limited ...
Peter-Lasse Giertzuch, Alexis Shakas, Joseph Doetsch, Bernard Brixel, Mohammadreza Jalali, Hansruedi Maurer   +5 more
doaj   +1 more source

Assessment of Combustion Cavern Geometry in Underground Coal Gasification Process with the Use of Borehole Ground-Penetrating Radar

Energies, 2023
In this study, the shape and size of a combustion cavity with a fracture zone in the gasified coal seam was determined with the use of control boreholes and a ground-penetrating radar (BGPR) test.
Zenon Pilecki, Robert Hildebrandt, Krzysztof Krawiec, Elżbieta Pilecka, Zbigniew Lubosik, Tomasz Łątka   +5 more
doaj   +1 more source

Fault Detection with Crosshole and Reflection Geo-Radar for Underground Mine Safety

Geosciences, 2020
Ground-penetrating radar and crosshole radar are applied in an underground marble mine for fault detection and to test if different geological bodies can be distinguished.
Jakob Kulich, Florian Bleibinhaus
doaj   +1 more source