Results 71 to 80 of about 1,359 (190)

Velocity estimation in GPR data based on diffraction analysis: Methodology and application to Antarctic firn

Near Surface Geophysics, Volume 24, Issue 2, Page 170-186, April 2026.
Abstract This study presents a methodological framework for estimating electromagnetic wave velocities in ground‐penetrating radar (GPR) data based exclusively on the analysis of diffractions. The approach integrates diffraction separation using the plane wave destruction algorithm and subsequent velocity refinement through the residual diffraction ...
Ian E. Vogado, José Jadsom S. Figueiredo, Jandyr M. Travassos, Saulo S. Martins   +3 more
wiley   +1 more source

Going Deeper With Deep Learning: Automatically Tracing Internal Reflection Horizons in Ice Sheets—Methodology and Benchmark Data Set

Journal of Geophysical Research: Machine Learning and Computation
Mapping the internal stratigraphy of ice sheets serves a variety of glaciological applications, from the study of past ice flows to current distribution of surface mass balance and melting to contemporary ice dynamics, all of which are crucial for ...
Hameed Moqadam, Daniel Steinhage, Adalbert Wilhelm, Olaf Eisen   +3 more
doaj   +1 more source

Image-radargram analysis based on generalized Hough transform: experimental cases

Journal of Geophysics and Engineering, 2012
This paper presents an algorithm based on the generalized Hough transform (GHT) to enhance geological structures in a 2D profile image constructed from ground-penetrating radar data. The proposed algorithm is applied over an edge representation image of the radargram; its local application (in Windows) allows us to identify structures and to obtain a ...
Aixa M Rivera-Rios, Elsa Leticia Flores-Marquez   +1 more
openaire   +1 more source

Subsurface Investigations of Cryo‐Hydrogeological Features in a High Arctic Catchment Under Transition

Permafrost and Periglacial Processes, Volume 37, Issue 2, Page 267-283, April/June 2026.
ABSTRACT In this study, the internal structure and seasonal variations of cryo‐hydrogeological features were investigated in the Fuglebekken catchment, located near the Polish Polar Station Hornsund in Svalbard. Over a few years, rising air temperatures and intensified water circulation have significantly altered the distribution, extent, and state of ...
Tomasz Wawrzyniak, Szymon Oryński, Artur Marciniak, Marzena Osuch   +3 more
wiley   +1 more source

A Deep Learning Architecture for Semantic Segmentation of Radar Sounder Data

, 2021
During the last decades, radar sounders provided direct measurements (radargrams) of the Earth’s polar caps’ subsurface. Radargrams are of critical importance for a better understanding of glaciologic structures and processes of the ice sheet in the ...
Bruzzone, Lorenzo, Donini, Elena, Bovolo, Francesca   +2 more
core   +1 more source

Anisotropic Melt Inclusions as a Confounding Signal for Ice‐Penetrating Radar Observations

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Ice‐penetrating radar is a powerful geophysical tool for understanding the subsurfaces of Earth, Mars, and icy moons. Radar reflectivity, attenuation, and birefringence are used to infer subsurface hydrology, englacial temperature, water content, and crystal orientation fabric.
A. H. Cheng, D. M. Schroeder, N. S. Wolfenbarger, R. Shaper, C. Seltzer, B. Hills   +5 more
wiley   +1 more source

Enhanced Resolution of Martian Polar Stratigraphy via Structure Enhancement Denoising and Sparse Deterministic Deconvolution of SHARAD Data

Remote Sensing
The Martian North Polar Layered Deposits (NPLD) are a thick sequence of ice and dust layers that serve as a primary archive of the planet’s recent climate history.
Peng Fang, Jinhai Zhang
doaj   +1 more source

Automated detection and characterization of diffraction curves in WISDOM/ExoMars radargrams [PDF]

IntroductionWISDOM (Water Ice Subsurface Deposits Observation on Mars) will be the Ground Penetrating Radar of the Rosalind Franklin rover of the ExoMars 2022 mission. This rover will be the first able to collect samples down to 2 m in the Martian subsurface, and analyse them in search of potential traces of life [1].
Oudart, Nicolas, Ciarletti, Valérie, Le Gall, Alice, Herve, Yann   +3 more
openaire   +1 more source

Dual‐Functional Additive Regulating Zn2+ Solvation Structure and (002) Plane‐Oriented Deposition for Dendrite‐Free Zn Anodes

Advanced Functional Materials, Volume 36, Issue 19, 5 March 2026.
Sulfosalicylic acid (SSA) is introduced as a bifunctional additive for Aqueous zinc‐ion batteries. SSA reconstructs the solvation structure of Zn2+ through the synergistic effects of its multiple functional groups, suppressing side reactions while selectively promoting Zn (002) deposition to prevent dendrite formation.
Le Gao, Ni Wang, Xingchen Xie, Liangkui Sun, Li Zhong, Wangbin Ding, Yushuang Tian, Sridhar Komarneni, Wencheng Hu   +8 more
wiley   +1 more source

IceAnatomy: a benchmark dataset and methodology for automatic ice boundary extraction from radio-echo sounding data [PDF]

The Cryosphere
The measurement of ice thickness is of great importance for the accurate estimation of glacier volume and the delineation of bedrock topography. In particular, this is a crucial factor in forecasting the future evolution of glaciers in the context of a ...
M. Dreier, M. Koch, N. Gourmelon, N. Blindow, D. Steinhage, F. Wu, T. Seehaus, M. Braun, A. Maier, V. Christlein   +9 more
doaj   +1 more source