Results 201 to 210 of about 3,965 (261)
Permafrost and Periglacial Processes, Volume 37, Issue 3, Page 306-322, July/September 2026.ABSTRACT Under continued climate warming, understanding present‐day permafrost distribution and the controls on ground thaw are critical for predicting permafrost thaw trajectories and associated implications. This study presents a high‐resolution investigation of permafrost extent and active layer thickness (ALT) across a coniferous forested hillslope
Alana Muenchrath +2 more
wiley +1 more source
Permafrost and Periglacial Processes, Volume 37, Issue 3, Page 430-448, July/September 2026.ABSTRACT Using a large and novel array of instruments on five rockwalls in northern Gaspesia, their respective surface energy balances were calculated and their thermal regimes were measured and modeled to depths exceeding the seasonal frost penetration.
Tom Birien, Francis Gauthier
wiley +1 more source
Permafrost and Periglacial Processes, Volume 37, Issue 3, Page 473-497, July/September 2026.ABSTRACT This study investigates the multi‐decadal evolution of a glacier forefield under permafrost conditions in the Combins Massif (western Swiss Alps). A multi‐method approach based on historical and recent datasets is used to analyze its landform components.
Julie Wee +2 more
wiley +1 more source
Permafrost and Periglacial Processes, Volume 37, Issue 3, Page 517-534, July/September 2026.ABSTRACT The existence of permafrost was explored at tropical latitude on Nevado Coropuna (southern Peruvian Andes) using a combination of ground‐penetrating radar (GPR) and vertical electrical sounding (VES) in order to strengthen the mutual validation of data processing and interpretation.
Velnia Chacca +6 more
wiley +1 more source
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2007
Ground penetrating radar2 (GPR) is an electromagnetic pulse reflection method based on physical principles similar to those of reflection seismics. It is a geophysical technique for shallow investigations with high resolution which has undergone a rapid development during the last two decades (cf. e.g. GPR Conference Proceedings 1994 to 2006).
Norbert Blindow +4 more
openaire +2 more sources
Ground penetrating radar2 (GPR) is an electromagnetic pulse reflection method based on physical principles similar to those of reflection seismics. It is a geophysical technique for shallow investigations with high resolution which has undergone a rapid development during the last two decades (cf. e.g. GPR Conference Proceedings 1994 to 2006).
Norbert Blindow +4 more
openaire +2 more sources
Ground penetrating radar tomography
1995 International Conference on Acoustics, Speech, and Signal Processing, 2002Presents a survey of theory and practice in tomographic imaging of subsurface features utilizing ground penetrating radar (GPR). The discussion includes: (i) A brief review of the equations governing radar scattering culminating in the Lippmann Schwinger (LS) equation.
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Fundamentals of Ground Penetrating Radar
Symposium on the Application of Geophysics to Engineering and Environmental Problems 1989, 1989Ground penetrating radar (GPR) is a relatively new technique for investigating shallow geologic, engineering and hydrologic features. The principles and theory are based on the wave equation derived from Maxwell’s Equations for electromagnetic wave propagation, and the antenna designs have evolved from field testing.
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2002
The following report demonstrates the accuracy of using Ground Penetrating Radar (GPR) to determine both the surface layer thickness for asphalt, and concrete pavements. In addition tests were conducted to identify GPR’s repeatability on dry pavements, GPR’s ability to determine pavement layer thicknesses in wet conditions, and an attempt was made to ...
Willett, David A., Rister, Brad
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The following report demonstrates the accuracy of using Ground Penetrating Radar (GPR) to determine both the surface layer thickness for asphalt, and concrete pavements. In addition tests were conducted to identify GPR’s repeatability on dry pavements, GPR’s ability to determine pavement layer thicknesses in wet conditions, and an attempt was made to ...
Willett, David A., Rister, Brad
openaire +1 more source