Article
Geography, Physical
Pascal E. Egli, James Irving, Stuart N. Lane
Summary: By using densely spaced ground-penetrating radar (GPR) measurements, researchers identified subglacial channels near temperate alpine glacier margins, mapping their characteristics and their relationship with glacier recession and ice collapse.
JOURNAL OF GLACIOLOGY
(2021)
Article
Environmental Sciences
Peng-Bin Liang, Li-De Tian
Summary: This study estimated the ice storage of glaciers in western China by compiling ice thickness observations and comparing with the Second Chinese Glacier Inventory. They found that the method of glacier division can significantly affect the total volume estimation and emphasized the need for more accurate glacier inventory data.
ADVANCES IN CLIMATE CHANGE RESEARCH
(2022)
Article
Remote Sensing
Tess Xianghuan Luo, Pengpeng Yuan, Song Zhu
Summary: This article introduces an automated workflow for the recognition and classification of subsurface structures using computer vision and machine learning techniques with GPR. The workflow is validated with controlled tests in the laboratory and evaluated with a real on-site case study, both of which showed promising results. The study establishes the necessity of a full-cover 3D GPR survey and demonstrates the feasibility and importance of integrating advanced computer vision techniques for analyzing data.
GEO-SPATIAL INFORMATION SCIENCE
(2022)
Article
Geography, Physical
Christophe Ogier, Dirk-Jan van Manen, Hansruedi Maurer, Ludovic Rass, Marian Hertrich, Andreas Bauder, Daniel Farinotti
Summary: Ground penetrating radar (GPR) has been widely used in glaciology to study glaciers' properties such as ice thickness and water content. However, interpreting GPR data in temperate glaciers is challenging due to strong scattering and attenuation. This study uses numerical modeling to investigate the effects of liquid water content and water inclusions on GPR signals, and finds that their impact is larger than that of other factors such as wet snowpack or heterogeneous ice permittivity distribution. The presence of water inclusions is shown to be necessary and sufficient for reproducing the typical characteristics of GPR data in the field.
JOURNAL OF GLACIOLOGY
(2023)
Article
Geography, Physical
Maria McQuillan, Leif Karlstrom
Summary: The study investigates the use of fluid resonance excitation by small amplitude waves as a probe of englacial geometry. Resonant frequencies and quality factors can diagnose fluid properties and geometry of the englacial system. Fundamental mode frequencies and damping rates alone can often well constrain crack lengths in settings that include alpine glaciers and ice sheets.
JOURNAL OF GLACIOLOGY
(2021)
Article
Environmental Sciences
Hoonyol Lee, Heejeong Seo, Hyangsun Han, Hyeontae Ju, Joohan Lee
Summary: The study investigated two velocity anomalies in the Campbell Glacier in East Antarctica, which may be related to bed hills in the glacial valley, causing temporal variation in ice velocity. Analysis from Ice Penetrating Radar (IPR) surveys revealed the possible presence of basal water at the location of velocity anomaly A, while crevasses began to appear at velocity anomaly B.
Article
Geography, Physical
Alexandra Giese, Steven Arcone, Robert Hawley, Gabriel Lewis, Patrick Wagnon
Summary: The study highlights the importance of supraglacial layer thickness in glacier melt processes. Ground-penetrating radar (GPR) can be utilized to measure debris thickness during a glacier's melt season, with the effectiveness depending on the reflective nature of the ice-debris interface. Laboratory experiments and field data analysis suggest that a new method based on volumetric backscatter could estimate debris thickness accurately.
JOURNAL OF GLACIOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Sarah F. Child, Leigh A. Stearns, C. J. van der Veen, Pedro Elosegui
Summary: Research on Byrd Glacier reveals that short-lived flow accelerations can lead to abnormally large basal crevasses near the grounding line. Airborne radar measurements and particle tracking help understand the height and formation process of these crevasses, which have an impact on both Byrd Glacier and the Ross Ice Shelf.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geography, Physical
Janis Karuss, Kristaps Lamsters, Ireneusz Sobota, Jurijs Jeskins, Peteris Dzerins, Andrew Hodson
Summary: The study of the thermal structure and drainage system of Waldemarbreen shows that hydrofracturing at higher elevations can play a major role in englacial water drainage through cold ice, in contrast to the cut and closure mechanism forming conduits in parts of the lower ablation area.
JOURNAL OF GLACIOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Niccolo Dematteis, Daniele Giordan, Paolo Perret, Melchior Grab, Hansruedi Maurer, Fabrizio Troilo
Summary: This research investigates the influence of bedrock geometry on glacier surface morphology through measurements of ice thickness, detection of bedrock topography, and analysis of glacier surface morphology and kinematics. The findings highlight the importance of frequent monitoring of glacier morphology for accurate glacier hazard assessment.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geography, Physical
Lukas Rettig, Sven Lukas, Matthias Huss
Summary: This study investigates the formation processes, preservation potential, and climatic significance of annually formed moraine ridges in the foreland of Gorner-gletscher, Switzerland. The results show that the formation of ice-marginal moraines is mainly controlled by several mechanisms, including sediment freezing, ice-cored moraine formation, bulldozing of pre-existing sediments, and incorporation of dead ice. The distribution of these mechanisms depends on climatological, topographical, and glaciological boundary conditions, with the slope of the ice margin being the most important factor. The retreat rates of the glacier can be calculated based on the largest and most well-defined moraines, which show a statistically significant correlation with annual air temperature anomalies.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Geography, Physical
Catherine A. Delaney, Kathryn Adamson, Lorna D. Linch, Stephen Davis, Stephen McCarron
Summary: This study utilizes high-resolution digital elevation models (DEMs) derived from airborne LiDAR, ground-penetrating radar (GPR) surveys, and sedimentological analyses to investigate the geomorphology and composition of ridges and mounds in the Brosna basin, central Ireland. The findings suggest that the hummocky topography is composed of fragmented mega-scale glacial lineations (MSGLs) overlain by groups of small ridges formed by subglacial till and sediment gravity flow deposits. The research indicates that the formation of these landforms reflects changes in ice sheet bed thermal/hydrological characteristics during deglaciation.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Construction & Building Technology
Lilong Cui, Tianqing Ling, Zeyu Zhang, Jingzhou Xin, Rukai Li
Summary: This study aims to develop an electromagnetic mixing model to predict the density of asphalt mixture with a wide range of air void content, and the proposed model shows superior prediction compared to conventional models. Experimental results demonstrate that the proposed model provides highly consistent density estimation for asphalt mixture with different aggregate gradations and air void contents.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Geography, Physical
Tate G. Meehan, H. P. Marshall, John H. Bradford, Robert L. Hawley, Thomas B. Overly, Gabriel Lewis, Karina Graeter, Erich Osterberg, Forrest McCarthy
Summary: This study presents continuous estimates of snow and firn density on the Greenland Ice Sheet using ground-penetrating radar, with insights gained into the spatial correlation of surface snow density. The method developed for radar data analysis allows for a more reliable interpretation of snow layers, and good agreement was found between physically constrained parameterization and observed data.
JOURNAL OF GLACIOLOGY
(2021)
Article
Construction & Building Technology
Chihping Kuo
Summary: The study proposes the use of ground penetrating radar method to investigate mud pumping distributions to prevent events and reduce labor and material costs.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Geography, Physical
Bangbing Wang, Bo Sun, Jiaxin Wang, Jamin Greenbaum, Jingxue Guo, Laura Lindzey, Xiangbin Cui, Duncan A. Young, Donald D. Blankenship, Martin J. Siegert
ANNALS OF GLACIOLOGY
(2020)
Article
Remote Sensing
William D. Harcourt, Steven J. Palmer, Damien T. Mansell, Anne Le Brocq, Oliver Bartlett, Noel Gourmelen, Paul Tepes, Julian A. Dowdeswell, Donald D. Blankenship, Duncan A. Young
INTERNATIONAL JOURNAL OF REMOTE SENSING
(2020)
Article
Astronomy & Astrophysics
Christopher Gerekos, Cyril Grima, Gregor Steinbrugge, Sanchari Thakur, Kirk M. Scanlan, Duncan A. Young, Lorenzo Bruzzone, Donald D. Blankenship
Summary: Understanding the relationship between Europa's surface roughness and backscattered radar signals, this study used Martian roughness data to create analog maps for different types of Europan terrains. It revealed that certain Europan terrains match certain Martian roughness analogues.
Review
Geochemistry & Geophysics
Joseph A. MacGregor, Linette N. Boisvert, Brooke Medley, Alek A. Petty, Jeremy P. Harbeck, Robin E. Bell, J. Bryan Blair, Edward Blanchard-Wrigglesworth, Ellen M. Buckley, Michael S. Christoffersen, James R. Cochran, Beata M. Csatho, Eugenia L. De Marco, RoseAnne T. Dominguez, Mark A. Fahnestock, Sinead L. Farrell, S. Prasad Gogineni, Jamin S. Greenbaum, Christy M. Hansen, Michelle A. Hofton, John W. Holt, Kenneth C. Jezek, Lora S. Koenig, Nathan T. Kurtz, Ronald Kwok, Christopher F. Larsen, Carlton J. Leuschen, Caitlin D. Locke, Serdar S. Manizade, Seelye Martin, Thomas A. Neumann, Sophie M. J. Nowicki, John D. Paden, Jacqueline A. Richter-Menge, Eric J. Rignot, Fernando Rodriguez-Morales, Matthew R. Siegfried, Benjamin E. Smith, John G. Sonntag, Michael Studinger, Kirsty J. Tinto, Martin Truffer, Thomas P. Wagner, John E. Woods, Duncan A. Young, James K. Yungel
Summary: Operation IceBridge conducted by NASA over 13 years aimed to survey land and sea ice using airborne laser altimetry. With 968 science flights, OIB greatly improved our understanding of land ice and sea ice, leading to numerous unexpected discoveries and providing valuable data for future research on the cryosphere.
REVIEWS OF GEOPHYSICS
(2021)
Article
Geochemistry & Geophysics
Davide Castelletti, Dustin M. Schroeder, Thomas M. Jordan, Duncan Young
Summary: The study presents a repeat-pass interferometric approach using airborne radar sounder data to estimate the englacial layer velocity, supporting 3-D analysis of ice flow and structure. By utilizing phase and magnitude data acquired repeatedly, along with data from a high-capability radar sounder system, the feasibility and limitations of the approach are demonstrated in two scenarios.
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Winnie Chu, Andrew M. Hilger, Riley Culberg, Dustin M. Schroeder, Thomas M. Jordan, Helene Seroussi, Duncan A. Young, Donald D. Blankenship, David G. Vaughan
Summary: This study combined two radar surveys to produce unified maps covering both Pine Island and Thwaites Glaciers, revealing a diverse subglacial landscape and evolving hydrologic conditions. The findings highlight the potential for joint airborne radar analysis with ground-based observations to understand variations in the bed properties and interactions of ice streams and outlet glaciers.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Geography, Physical
Kristian Chan, Cyril Grima, Anja Rutishauser, Duncan A. Young, Riley Culberg, Donald D. Blankenship
Summary: Using airborne ice-penetrating radar surveys, we characterized the near-surface structure of the Devon Ice Cap in the Canadian Arctic, specifically focusing on ice layers formed from refrozen meltwater. Our results indicate that the average ice slab thickness in the percolation zone of the ice cap ranges from 4.2 to 5.6 meters, which may contribute to surface runoff through supraglacial rivers.
Article
Geography, Physical
Julien A. Bodart, Robert G. Bingham, Duncan A. Young, Joseph A. MacGregor, David W. Ashmore, Enrica Quartini, Andrew S. Hein, David G. Vaughan, Donald D. Blankenship
Summary: This study uses internal reflecting horizons (IRHs) to estimate the accumulation rates of glaciers in the West Antarctic Ice Sheet during the mid-Holocene, and finds that the rates were 18% higher than modern rates. These findings are important for understanding the past evolution of the Antarctic Ice Sheet and its contribution to sea-level rise.
Article
Astronomy & Astrophysics
Cyril Grima, Nathaniel E. Putzig, Bruce A. Campbell, Matthew Perry, Sean P. S. Gulick, Russell C. Miller, Aaron T. Russell, Kirk M. Scanlan, Gregor Steinbrugge, Duncan A. Young, Scott D. Kempf, Gregory Ng, Dillon Buhl, Donald D. Blankenship
Summary: Building on previous research, this study investigates the response of the Martian surface to orbital radar using a reflectometry technique known as radar statistical reconnaissance. The results provide statistical parameters describing the surface and near-surface structure of the test region, allowing for the identification of smooth and level terrains. The findings also highlight the complementarity of different data sets and advocate for the use of self-affine radar backscattering models to account for roughness variations at different scales.
PLANETARY SCIENCE JOURNAL
(2022)
Article
Geochemistry & Geophysics
Miguel Liu-Schiaffini, Gregory Ng, Cyril Grima, Duncan Young
Summary: The article presents a deep learning model for automated ice bed identification, which can capture fine-grained basal detail and detect basal echoes automatically. The proposed method shows comparable or superior performance to the manual approach in certain applications.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Geochemistry & Geophysics
Gregor Steinbrugge, Mark S. Haynes, Dustin M. Schroeder, Kirk M. Scanlan, Alexander Stark, Duncan A. Young, Cyril Grima, Scott Kempf, Gregory Ng, Dillon Buhl, Joana R. C. Voigt, Thomas Roatsch, Donald D. Blankenship
Summary: This research developed an algorithm to process SHARAD data on Mars and convert it into altimetry profiles and digital terrain models. Despite the lower resolution of SHARAD data, it can still be used for satellite-based altimetry, which is particularly important for future planetary missions without laser altimeters but equipped with radar sounders.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Geography, Physical
Anja Rutishauser, Donald D. Blankenship, Duncan A. Young, Natalie S. Wolfenbarger, Lucas H. Beem, Mark L. Skidmore, Ashley Dubnick, Alison S. Criscitiello
Summary: A new aerogeophysical survey provides evidence for the existence of a hypersaline subglacial lake complex and a network of shallow brine/saturated sediments covering about 170 square kilometers beneath the center of Devon Ice Cap in the Canadian Arctic. The survey also reveals the presence of three closely spaced lakes with a total area of 24.6 square kilometers. These findings suggest a diverse hypersaline subglacial hydrological environment that potentially supports various microbial habitats.
Article
Geosciences, Multidisciplinary
Marie G. P. Cavitte, Duncan A. Young, Robert Mulvaney, Catherine Ritz, Jamin S. Greenbaum, Gregory Ng, Scott D. Kempf, Enrica Quartini, Gail R. Muldoon, John Paden, Massimo Frezzotti, Jason L. Roberts, Carly R. Tozer, Dustin M. Schroeder, Donald D. Blankenship
Summary: This study presents a comprehensive ice-penetrating radar data set covering the Dome C area of the East Antarctic plateau, including 26 internal reflecting horizons (IRHs) collected over 10 years. By correlating with the EPICA-DC ice core, 19 IRHs spanning four glacial cycles were dated, along with indirect dating of seven older IRHs using a 1D ice flow inverse model. Depth and age uncertainties for all IRHs were quantified and provided as part of the data set.
EARTH SYSTEM SCIENCE DATA
(2021)
Article
Engineering, Electrical & Electronic
Kirk M. Scanlan, Duncan Young, Gregor Steinbrugge, Scott Kempf, Cyril Grima, Donald Blankenship
Summary: The article introduces a SAR focusing strategy tailored for the REASON datasets, demonstrating its imaging capability and feasibility using SHARAD and MARSIS data sets. It also proposes a quantitative quality control framework and reexamines and compares the assumption of depth-independent SAR focusing.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2021)
Article
Geography, Physical
Lucas H. Beem, Duncan A. Young, Jamin S. Greenbaum, Donald D. Blankenship, Marie G. P. Cavitte, Jingxue Guo, Sun Bo
Summary: New aerogeophysical observations of Titan Dome in East Antarctica characterized the region and evaluated its suitability as a paleoclimate ice core site. However, due to past fast flow dynamics, basal ice likely being too young, and coarse temporal resolution, Titan Dome is not expected to be relevant to the study of the middle Pleistocene transition.
