Results 71 to 80 of about 1,538 (216)

Geophysical identification of voids and loosened zones in the shallow subsurface of post-mining areas

E3S Web of Conferences, 2018
The shallow historic exploitation of Zn-Pb/Fe ore deposits as well as hard coal has generated many discontinuous deformations on the terrain surface in the Upper Silesian Coal Basin/Poland. Discontinuous deformations occur in different forms as sinkholes,
Pilecki Zenon
doaj   +1 more source

Quantifying the Rapid Propagation of Rainfall and Evapotranspiration Signals Into Soils

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Precipitation and evapotranspiration are major drivers of soil moisture dynamics, which in turn influence plant water availability, biogeochemical reactions, and trace gas emissions. However, it has been unclear whether evapotranspiration signals propagate through soil columns differently than precipitation signals do.
Huibin Gao, Harsh Beria, Marius Floriancic, Martin Hirschi, James W. Kirchner   +4 more
wiley   +1 more source

Propagation of ground penetrating radar waves in Chinese coals.

PLoS ONE, 2020
This paper reports an experimental study on the electrical properties of five coal samples taken from various Chinese coal mines. The dielectric permittivity and specific resistivity of grinded coal samples subjected to electromagnetic (EM) fields in a ...
Duo Zhang, Rui Tang, Hu Wen, Shixing Fan
doaj   +1 more source

Deciphering transitions within ice–debris complexes in the Northern Tien Shan through surface characteristics and internal structure

Earth Surface Processes and Landforms, Volume 51, Issue 5, May 2026.
Geophysical (GPR and ERT) data reveal a transition from buried glacial ice to an ice–debris mixture within ice–debris complexes in Kazakhstan; this transition is reflected in surface morphological and kinematic characteristics. We identify some relationships between internal ice content and associated surface kinematics but caution against ...
Ella Wood, Tobias Bolch, Vassiliy Kapitsa, Francesca Baldacchino, Viktor Blagoveshchensky, Foteh Rahimov, Alibek Taskynbayev, Lothar Schrott   +7 more
wiley   +1 more source

Sondagem de meios estratificados com o radar de subsuperfície neural / [PDF]

, 1998
Tese (Doutorado) - Universidade Federal de Santa Catarina, Centro ...
Lopes, Elizeu Pereira
core  

Investigations of Fracture Zones in Crystalline Rock by Borehole Radar

, 1985
A borehole pulse radar system has been developed as part of the International Stripa Project with the objective to identify and characterize fracture zones at a considerable distance from boreholes. The radar uses very short pulses, which are transmitted
Lars Lundmark, Olle Olsson, Olof Forslund, Eric Sandberg, Lars Falk   +4 more
core   +1 more source

Ice sheet attenuation from radar sounding in the frequency domain

Journal of Glaciology
Attenuation rates inferred from radar sounding offer one of the few ways to observationally constrain the large-scale temperature structure of ice sheets.
Eliza J Dawson, Wing (Winnie) Chu, Michael Christoffersen, Donglai Yang, Stuart Farris, Joseph A MacGregor   +5 more
doaj   +1 more source

Stemflows and Preferential Flows: A Historical Review and Challenges for the Future

Hydrological Processes, Volume 40, Issue 5, May 2026.
Possible implementation of stemflow in the MIPS model where all water in the system is represented as particles in pathways of specified velocity. Stemflow (green particles) can be treated as a localised input with probabilities of entering higher velocity pathways than throughfall, depending on the input rates.
Keith Beven, John T. Van Stan
wiley   +1 more source

Associating Borehole Radar Imaging with Petrophysical Properties for a Mud-Contaminated Reservoir

, 2019
In the phase of oil drilling, mud filtrate penetrates into porous formations and alters the pore fluid properties. This complicates well logging exploration, and inevitably gives rise to shift in reservoir estimation.
Zhou, F., Giannakis, Iraklis, Antonios Giannopoulos, Giannopoulos, Antonios (author), Giannopoulos, Antonios, Zhou, F. (author), Slob, E.C. (author), Evert Slob, Feng Zhou, Iraklis Giannakis, Giannakis, Iraklis (author), Slob, E.C.   +11 more
core   +1 more source

Time-lapse borehole radar measurements in a sandy groundwater system during a winter recharge cycle [PDF]

, 2012
Borehole Radar has demonstrated to be an effective method to determine water content profiles within the vadose zone. Time-lapse measurements shown in this study were acquired on the Gnangara Mound north of Perth, Western Australia.
Kepic, Anton, Strobach, Elmar, Dupuis, Christian, Harris, Brett, Martin, M.   +4 more
core   +1 more source