Results 91 to 100 of about 21,520 (229)

Ground Penetrating Radar (GPR) for bridge inspection

Bridge inspection plays a crucial role in providing bridge operators with an overview of their infrastructure’s current condition, enabling them to extend their service life. This is even more important since a significant number of bridges were constructed after World War II with few comprehensive documents regarding their construction, for example ...
Roumia, Nzeeh, Mazzotti, Claudio
openaire   +1 more source

Temporal Monitoring of the Soil Freeze-Thaw Cycles over a Snow-Covered Surface by Using Air-Launched Ground-Penetrating Radar

Remote Sensing, 2015
We tested an off-ground ground-penetrating radar (GPR) system at a fixed location over a bare agricultural field to monitor the soil freeze-thaw cycles over a snow-covered surface.
Khan Zaib Jadoon, Lutz Weihermüller, Matthew F. McCabe, Davood Moghadas, Harry Vereecken, Sebastíen Lambot   +5 more
doaj   +1 more source

Melt regimes, internal stratigraphy, and flow dynamics of three glaciers in the Alaska Range [PDF]

, 2012
We used ground-penetrating radar (GPR), GPS and glaciochemistry to evaluate melt regimes and ice depths, important variables for mass-balance and ice-volume studies, of Upper Yentna Glacier, Upper Kahiltna Glacier and the Mount Hunter ice divide, Alaska.
Arcone, Steven, Campbell, Seth, Introne, Douglas, Kreutz, K, Osterberg, Erich, Volkening, Kevin, Wake, Cameron P, Winski, Dominic   +7 more
core   +2 more sources

A Review of Ground Penetrating Radar Antenna Design and Optimization

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Ground Penetrating Radar is a complex nondestructive evaluation technique where the antenna is the most critical part. The antenna is responsible for transmission and reception of waves at the proper level and frequencies defined in the GPR system ...
X. L. Travassos, S. L. Avila, R. L. da S. Adriano, N. Ida   +3 more
doaj   +1 more source

Delineation of Agricultural Drainage Pipe Patterns Using Ground Penetrating Radar Integrated with a Real-Time Kinematic Global Navigation Satellite System

Agriculture, 2018
Better methods are needed for mapping agricultural drainage pipe systems. Prior research on small test plots indicates that ground penetrating radar (GPR) is oftentimes capable of detecting buried drainage pipes; however, the feasibility of employing ...
Barry Allred, DeBonne Wishart, Luis Martinez, Harry Schomberg, Steven Mirsky, George Meyers, John Elliott, Christine Charyton   +7 more
doaj   +1 more source

Airborne Ground Penetrating Radar (GPR) for peat analyses in the Canadian Northern wetlands study [PDF]

The study was conducted as part of the NASA Biospherics Research on Emissions from Wetlands (BREW) program. An important aspect of the program is to investigate the terrestrial production and atmospheric distribution of methane and other gases ...
Pelletier-Travis, Ramona E.
core   +1 more source

Geophysical characterization of derelict coalmine workings and mineshaft detection: a case study from Shrewsbury, United Kingdom [PDF]

, 2009
A study site of derelict coalmine workings near Shrewsbury, United Kingdom was the focus for multi‐phase, near‐surface geophysical investigations. Investigation objectives were: 1) site characterization for remaining relict infrastructure foundations, 2)
Cassidy, NJ, Caunt, S, Husband, CR, Jones, GM, Lane, VS, Pringle, JK, Stimpson, IG, Styles, P, Toon, SM   +8 more
core   +2 more sources

How Close are the Edges of a Closed Fracture? [PDF]

, 2008
A laboratory experiment is peresented where the theory of amplitude reflection tuning in thin beds is tested.
Calzoni, Corrado, Sambuelli., L.
core  

Deep learning-based segmentation and detection of tunnel lining defects and components from GPR images using T-GPRMask

Underground Space
Ground penetrating radar (GPR) has been extensively applied in tunnel engineering for the non-destructive assessment of lining structures. However, the interpretation of GPR images remains a time-consuming and expertise-dependent task.
Jiahao Li, Hehua Zhu, Mei Yin
doaj   +1 more source

First ground penetrating radar survey on Monte Perdido glacier (Pyrenees) [PDF]

, 2016
Producción CientíficaThe project “The Monte Perdido Glacier: Monitoring the glacial dynamic and the associated cryospheric processes as indicators of global change” (National Park´s 2013 Fund) aims to study the recent dynamic and degradation of this ice
Heras Barrueco, Andrés, López Moreno, Juan Ignacio, Rico, Ibai, Río, Luis Mariano del, Serrano Cañadas, Enrique, Tejado, Juan José   +5 more
core   +1 more source