Results 51 to 60 of about 1,538 (216)
Liquid water content in ice estimated through a full-depth ground radar profile and borehole measurements in western Greenland [PDF]
The Cryosphere, 2017 Liquid water content (wetness) within glacier ice is known to strongly control ice viscosity and ice deformation processes. Little is known about wetness of ice on the outer flanks of the Greenland Ice Sheet, where a temperate layer of basal ice exists ...
J. Brown, J. Harper, N. Humphrey
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Development of pulseEKKO borehole radar
, 1996 This paper presents a progress report on a project undertaken in September 1994 to develop low cost borehole antennas for the pulseEKKO ground penetrating radar family. Survey methodology, data acquisition procedures, and interpretation are described for applications of these borehole antennas in near surface environments (ó30 m).
E Gilson +4 more
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Ecology and Evolution, Volume 16, Issue 6, June 2026.. ABSTRACT Arid and semi‐arid lands (ASALs) support tropical wooded shrublands and grasslands that sustain a diverse array of flora and fauna, including specialized avian communities. However, as the demand for food, fuel, and other natural resources intensifies, these inherently fragile ecosystems face mounting pressure, resulting in significant ...
Enock Nyamorambo Nyamira +2 more
wiley +1 more source
An Approximate Time‐Domain Solution for Recharge Propagation Through Thick Unsaturated Zones
Hydrological Processes, Volume 40, Issue 6, June 2026.This study presents a time‐domain analytical solution for modelling groundwater recharge through thick unsaturated zones, applied to the Urucuia aquifer in Brazil. The model was calibrated using observed well data, capturing the attenuation of seasonal groundwater level fluctuations with depth.
Caio Leão +2 more
wiley +1 more source
Technical advances and research directions of borehole geophysical prospecting for coal mines
Meitian dizhi yu kantanBackgroundHigh-precision and long-distance exploration of geological conditions is required for coal extraction and disaster prevention in coal mines. However, traditional drilling and geophysical prospecting methods face technical bottlenecks such as ...
Jianyuan CHENG +5 more
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Low Hazard–High Risk: A Case Study of the Active Mangatangi Fault
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.Activity on low deformation rate faults are challenging to quantify and comparatively understudied. One such fault, the Mangatangi Fault, strikes NE‐SW along the southeastern flanks of the Hunua Ranges c. 52 km south of New Zealand's most populous city, Auckland.
Hannah E. Martin +3 more
wiley +1 more source
Enhancement of Cross-Borehole Pulse Radar Signature on a Partially Water-Filled Tunnel
International Journal of Antennas and Propagation, 2014 Cross-borehole pulse radar has been employed to detect a deeply located empty tunnel. In this paper, effects of underground water collected in the bottom of an empty tunnel on cross-borehole pulse radar signatures are analyzed numerically. B-scan images,
Ji-Hyun Jung, Se-Yun Kim
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Investigation of Hydraulic Pathways with Borehole Radar.
Journal of the Japan Society of Engineering Geology, 1992 Recently, structures of strata and permeability in the rock mass have been investigated with borehole radar systems using electromagnetic waves.As a result of examinations, the explorative distance of the system was limited from 100 meters in the fractuered granite rock mass under present conditons in Japan, and further improvements are needed to ...
KITAMURA, Takaomi +5 more
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New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.Eruptions in the Auckland Volcanic Field in Aotearoa New Zealand have not occurred since seismic monitoring began in Aotearoa New Zealand, but it is generally presumed that future eruptions from the Auckland Volcanic Field will be preceded by elevated rates of seismicity.
S. O’Hagan +5 more
wiley +1 more source
Ground-penetrating radar and electrical resistivity tomography for mapping bedrock topography and fracture zones: a case study in Viru-Nigula, NE Estonia [PDF]
Estonian Journal of Earth Sciences, 2017 The Geological Base Map (GBM), presenting an elongated buried valley running beneath the Varudi bog, triggered the geophysical studies near Viru-Nigula borough in northeastern Estonia.
Ivo Sibul, Jüri Plado, Argo Jõeleht
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