Results 41 to 50 of about 603 (176)

Advancing Aquifer Characterization Through the Integration of Satellite Geodesy, Geomechanics, and Bayesian Inference

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Unsustainable rates of groundwater (GW) depletion make GW management a priority. Effective GW management is hindered by the uncertainty in the predictions of aquifer models, but the increase of geodetic surface deformation data can improve aquifer characterization.
Amal Alghamdi, Marc A. Hesse, Jingyi Chen, Omar Ghattas   +3 more
wiley   +1 more source

Karst development evaluation based on cross-hole radar tomography

Carsologica Sinica
Cross-hole geo-radar tomography, which belongs to the method of electromagnetic wave tomography between boreholes, is a way of borehole radar detection. Specifically, electromagnetic waves are transmitted form one borehole (transmitting borehole) and the
Long JIA, Yi ZHANG, Yan MENG, Lujuan LI, Zongyuan PAN, Yuanbin WU, Renchao YIN   +6 more
doaj   +1 more source

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
doaj   +1 more source

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, J Pilon, D Redman, P Annan, D Leggatt   +4 more
openaire   +1 more source

Transient Creep on the Yarlung Zangbo Suture in Southern Tibet Triggered by the 2015 Gorkha (Nepal) Earthquake

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Large earthquakes often elevate seismicity in surrounding regions, as seen on the Xainza‐Dinggyê rift in southern Tibet after the 2015 MW 7.8 Gorkha (Nepal) earthquake. In contrast, the EW‐trending Yarlung Zangbo suture (YZS), located directly north of this event, exhibits seismic quiescence.
Yunfeng Tian, Jing Liu‐Zeng, Wanpeng Feng, Xingping Hu, Yi Luo, Yingshun Hu, Wenliang Jiang   +6 more
wiley   +1 more source

Technical advances and research directions of borehole geophysical prospecting for coal mines

Meitian dizhi yu kantan
BackgroundHigh-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, Yu YAN, Yuteng LI, Pan WANG, Rui ZHAO, Bici JIANG   +5 more
doaj   +1 more source

Coarse Sediment Transport in a Near‐Terminus Subglacial Channel

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract We present the first large‐sample, spatially resolved measurements of coarse sediment transport within a subglacial meltwater channel. We released 324 radio‐tagged pebbles into a near‐terminus channel of Glacier d’Otemma, Switzerland, and monitored their positions through 10–50 m of ice during the mid to late melt season.
Matt Jenkin, Davide Mancini, Floreana Miesen, Bryn Hubbard, Margaux Hofmann, Stuart N. Lane   +5 more
wiley   +1 more source

Spatial Variability of Permafrost and Active Layer Thickness in a Forested Hillslope of the Taiga Shield

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, Christopher Spence, Andrew Ireson   +2 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
doaj   +1 more source

Deciphering Freeze–Thaw Dynamics In Rockwalls: A Novel Approach for High Accuracy Regional‐Scale Modeling

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