Results 61 to 70 of about 25,932 (218)

Rapid UAV‐ and Ground‐Based Magnetic Mapping of Subsurface Fractures During a Volcano‐Tectonic Crisis in Grindavík, Iceland

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract We applied an integrated UAV‐ and ground‐based magnetometry workflow to map shallow subsurface fractures and cavities in the town of Grindavík during the 2023–2025 volcano‐tectonic crisis. Short‐wavelength linear and semi‐circular magnetic lows delineate open or partially open fractures and localized cavities, including features with no ...
E. J. Piispa, C. R. Gallagher, S. Bernholt, G. M. Einarsson, Ö. Erlendsson, K. Á. Karlsdóttir, M. Á. Sigurgeirsson, R. A. Askew, D. Ben‐Yehoshua, B. V. Óskarsson, S. R. Gunnarson, M. T. Gudmundsson, G. Björnsson   +12 more
wiley   +1 more source

A Sliding Time‐Window Energy Ratio Method for Weak Signal Enhancement of Deep Subgrade Voids in GPR Data

Applied Research, Volume 5, Issue 4, August 2026.
A sliding time‐window energy ratio method is proposed to enhance weak GPR reflections from deep pavement voids. By combining target‐window localization with same‐window normalization, STWER suppresses non‐target interference and improves defect localization, as demonstrated by numerical simulations and field cases verified by excavation and core ...
Zhengnan Liu, Wanli Chao, Qishun Wang, Yuan Liu, Xiang Qiu   +4 more
wiley   +1 more source

Increasing Frequency of Coastal Erosion Indicated by a Hindcast Model of Storm‐Driven Forcing Calibrated With Beach Stratigraphy

Earth's Future, Volume 14, Issue 8, August 2026.
Abstract Beach stratigraphy at North Beach, Sandy Hook, New Jersey is used to calibrate a model of coastal erosion, establish a model‐based erosion threshold, and evaluate how often threshold conditions have been exceeded since 1979 through hindcast analysis.
W. John Schmelz, Kenneth G. Miller, Jonathan Liu, J. N. Stanley, James V. Browning   +4 more
wiley   +1 more source

Enhancing rock mass classification with ground penetrating radar: a novel approach for subsurface discontinuity assessment in geotechnical engineering

REM: International Engineering Journal
This article explores the application of ground penetrating radar (GPR) as a novel, cost-effective tool for rock mass classification in geotechnical engineering. Traditional rock mass classification systems, such as the rock quality index (RQD), the rock
Konstantinos Polemis Júnior, Francisco Chagas da Silva Filho, Francisco Pinheiro Lima-Filho, João Andrade dos Reis Júnior, Washington Luiz Evangelista Teixeira, Yoe Alain Reyes, Cesar Ulisses Vieira Verissimo   +6 more
doaj   +1 more source

The Internal Ice Content of Timpanogos Rock Glacier, Utah, USA From 3‐D Bayesian Inversion of Gravity Data

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 8, August 2026.
Abstract Despite the prevalence of rock glaciers in mountain environments, their ice volumes are poorly constrained. Rock glaciers persist in settings unable to support glaciers. They act as climate resilient water stores and refugia for cold‐adapted species while also posing a hazard to alpine communities. Imaging the entire internal structure of rock
Bronson Cvijanovich, Michael S. Thorne, Surya Pachhai, Leif S. Anderson, Ivan Tochimani‐Hernandez, Christian L. Hardwick, Tonie van Dam   +6 more
wiley   +1 more source

Tree root system imaging using Ground Penetrating Radar

Annals of Silvicultural Research, 2017
Evaluating tree roots systems without compromise their environment with destructive and laborious methods, is of crucial importance for preserving plant resources.
Carlotta Ferrara, Luca Salvati, Pier Matteo Barone   +2 more
doaj   +1 more source

Exploring the Influence of Morphologic Heterogeneity and Discharge on Downstream Transport in Streams With Multiple Logjams: 2. Insight From Numerical Models

Water Resources Research, Volume 62, Issue 8, August 2026.
Abstract Logjams in streams create complex morphologic features such as pools, bars, and branching channels that enhance stream water storage and force water through the streambed. We examine how these features alter solute retention in stream corridors as discharge increases, backwaters expand, new channels activate, and jams become more submerged ...
Xiaolang Zhang, Audrey H. Sawyer, Kamini Singha, Ellen Wohl   +3 more
wiley   +1 more source

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

Assessing the Vulnerability of an Inuit Archaeological Site in a Changing Periglacial Environment: A Novel Multimethod Geophysical Approach in Arctic Geoarchaeology

Archaeometry, Volume 68, Issue 4, Page 620-632, August 2026.
ABSTRACT With northern regions warming at twice the global rate, assessing the state of archaeological sites in these areas is critically important. In this study, we used a multimethod geophysical approach (ERT, GPR, and EMI) to characterize the current geocryological conditions of an Inuit archaeological site on South Aulatsivik Island (Labrador ...
Rachel Labrie, Dominique Todisco, Najat Bhiry, Cécile Finco, Héloïg Barbel Le Page, Armelle Couillet   +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