Article
Engineering, Environmental
Dyre Oliver Dammann, Mark A. Johnson, Andrew R. Mahoney, Emily R. Fedders, Masato Ito, Jennifer K. Hutchings, Christopher M. Polashenski, Mark Fahnstock
Summary: In this study, landfast sea ice dynamics were evaluated using ground-based radar interferometry. Measurements were collected using the Gamma portable radar interferometer (GPRI) during two field campaigns in Utqiagvik, Alaska in May 2012 and April 2021. The results showed near spatially uniform divergence strains and uniform vertical shifts in response to various environmental factors. The study suggests that GPRI can be a valuable tool for monitoring ice-covered coastal zones and small-scale deformation of ice.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Ying Liu, Mengyuan Liu, Junhui Xing, Yixin Ye
Summary: With the impact of global warming, research on Arctic sea ice has become more important. Ground penetrating radar (GPR) is a powerful tool for understanding the structure of Arctic sea ice. Traditional imaging techniques are no longer effective, leading to the widespread adoption of the two-parameter full waveform inversion (FWI) method. Various optimization techniques, such as the L-BFGS algorithm and Wolfe criterion, have been used to improve the accuracy of FWI. Additionally, the introduction of parameter scale factor, multiscale inversion strategy, and total variation (TV) regularization has enhanced the effectiveness of Arctic sea ice imaging.
Article
Geography, Physical
Emanuele Forte, Hugh M. French, Rossana Raffi, Ilaria Santin, Mauro Guglielmin
Summary: This study reports the findings of a combined geophysical and geomorphological investigation of thermal-contraction-crack polygons near Gondwana station in northern Victoria Land, Antarctica. The study area, characterized by random orthogonal polygons, was analyzed using ground penetrating radar, electrical resistivity tomography, geomorphological surveys, and trench excavations. The study found that the polygons are composite in nature and only well developed at higher elevations above the current sea level. Unexpectedly, the polygons align with the raised beach boundaries and correlate with stratigraphic layers dipping toward the sea.
PERMAFROST AND PERIGLACIAL PROCESSES
(2022)
Article
Geosciences, Multidisciplinary
H. T. Mithan, T. C. Hales, P. J. Cleall
Summary: An increase in Arctic shallow landsliding caused by climate warming is influenced by the topographic controls on ground ice distribution and hydrology, with high ground-ice concentrations near the potential failure plane acting as a stronger control than high average ice volumes or rapid thawing. The low average slopes and low concavity of Arctic hillslopes cannot generate landsliding solely based on pore-water pressures.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Niek Jesse Speetjens, Gustaf Hugelius, Thomas Gumbricht, Hugues Lantuit, Wouter R. Berghuijs, Philip A. Pika, Amanda Poste, Jorien E. Vonk
Summary: ARCADE is an integrated database of over 40,000 catchments that drain into the Arctic Ocean, ranging in size from 1 to 3.1 x 106 km2. It includes numerous small catchments experiencing significant climatic warming and storing large amounts of soil carbon. ARCADE is a key tool for monitoring the pan-Arctic across scales.
EARTH SYSTEM SCIENCE DATA
(2023)
Article
Geosciences, Multidisciplinary
A. Piliouras, R. Lauzon, J. C. Rowland
Summary: The dynamics and deposition patterns of Arctic delta channels are uniquely affected by ice and permafrost, with both limiting channel mobility and enhancing overbank deposition. The combined influences of ice thickness and permafrost erodibility play a significant role in shaping channel migration, avulsion, and persistence, as well as onshore and nearshore deposition patterns.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Environmental Sciences
Shichao Jia, Tingjun Zhang, Jiansheng Hao, Chaoyue Li, Roger Michaelides, Wanwan Shao, Sihao Wei, Kun Wang, Chengyan Fan
Summary: Active layer thickness (ALT) is a sensitive indicator of response to climate change and has important influences on various aspects of the regional environment. This study used ground-penetrating radar (GPR) surveys and a statistical model to investigate the spatial variability of ALT along the Qinghai-Tibet Engineering Corridor (QTEC) and its relationship with soil thermal regime, soil properties, and vegetation.
Article
Oceanography
I. Bij de Vaate, A. N. Vasulkar, D. C. Slobbe, M. Verlaan
Summary: Seasonal modulation of the M-2 tide in the Arctic Ocean and connected regional seas has been quantified using Synthetic Aperture Radar altimetry. The presence of landfast ice affects tidal amplitudes, with decreased amplitudes locally but possibly increased ones in some cases further afield. Winter months in most regions with landfast ice experience later arrival of the tide, except for Hudson Bay where phase advance is observed. Discrepancies between model- and altimeter-derived results for seasonal modulation suggest the importance of other seasonal processes.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Shunshun Qi, Gouyu Li, Dun Chen, Mingtang Chai, Yu Zhou, Qingsong Du, Yapeng Cao, Liyun Tang, Hailiang Jia
Summary: This article investigates the damage properties of a damaged block-stone embankment and provides reference points for future construction and maintenance of such embankments.
Article
Geosciences, Multidisciplinary
Yudong Sun, Bryan Riel, Brent Minchew
Summary: The collapse of an ice shelf can cause glaciers to accelerate and lead to rapid ice mass loss. This study investigates the deformation of landfast sea ice to understand the resistive stresses and mechanisms driving ice collapse. By analyzing synthetic aperture radar data, the researchers found that the landfast ice in the Antarctic Peninsula disintegrated in 2022 due to several large opening rifts. They also observed that grounded glaciers did not immediately accelerate after the collapse, indicating a limited buttressing effect from landfast ice. These findings suggest that the buttressing stresses are unlikely to recover within the sub-decadal timescales following ice shelf collapse.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Yudong Sun, Bryan Riel, Brent Minchew
Summary: The speed-up of glaciers can significantly increase ice mass loss after the collapse of an ice shelf. This study investigates the deformation of landfast sea ice to understand its resistive stresses and the mechanisms of ice collapse. By analyzing radar data, the researchers found that the landfast ice filling the embayment formerly covered by the Larsen B Ice Shelf disintegrated in 2022 due to a few large opening rifts. The grounded glaciers did not immediately accelerate after the collapse, suggesting little buttressing effect from landfast ice.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Multidisciplinary Sciences
Shawn M. Chartrand, A. Mark Jellinek, Antero Kukko, Anna Grau Galofre, Gordon R. Osinski, Shannon Hibbard
Summary: This research reconstructs and analyzes the landscape development and channelization in the Muskox Valley region over the past 60 years using multiple sources of data and physical models. The results demonstrate that the presence of polygon fields in permafrost-rich environments plays a crucial role in shaping the establishment and evolution of stream networks.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Andrew D. Parsekian, Richard H. Chen, Roger J. Michaelides, Taylor D. Sullivan, Leah K. Clayton, Lingcao Huang, Yuhuan Zhao, Elizabeth Wig, Mahta Moghaddam, Howard Zebker, Kevin Schaefer
Summary: This study validates airborne SAR-derived ALT estimates in three regions of Alaska, USA using calibrated ground penetrating radar (GPR) geophysical data. The remotely sensed ALT estimates matched the field observations within uncertainty for 79% of locations, suggesting that SAR is an effective tool to monitor permafrost measurements.
Article
Environmental Studies
Alexander N. Fedorov, Pavel Y. Konstantinov, Nikolay F. Vasiliev, Nikolay I. Basharin, Andrei G. Shepelev, Varvara A. Andreeva, Valerii P. Semenov, Yaroslav I. Torgovkin, Alexey R. Desyatkin, Mikhail N. Zheleznyak, Igor P. Semiletov
Summary: This study focuses on the distribution of ground ice volumes in the upper layers of permafrost in Arctic Yakutia and compiles a map to assess the vulnerability of permafrost to global warming and anthropogenic impact, as well as forecast the evolution of permafrost landscapes. The results show that about 19% of the area is occupied by ultra ice-rich sediments, while very high ice volumes cover approximately 27% of the area and low ice volumes account for about 29% of Arctic Yakutia.
Article
Marine & Freshwater Biology
Manne Gopaiah, Rajarshi Saha, Iswar Chandra Das, Gummapu Jai Sankar, Kumranchat Vinod Kumar
Summary: This study focused on quantitatively assessing freshwater pockets in a near shore coastal aquifer on the east coast of India using ground penetrating radar (GPR) investigation and geospatial data. The results showed seasonal water table variation and differences in freshwater/saltwater interface zone. The study illustrates aquifer potential and overall groundwater dynamics in the area.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Water Resources
Ian T. Stevens, Tristram D. L. Irvine-Fynn, Philip R. Porter, Joseph M. Cook, Arwyn Edwards, Martin Smart, Brian J. Moorman, Andy J. Hodson, Andrew C. Mitchell
HYDROLOGICAL PROCESSES
(2018)
Article
Geography, Physical
Chris H. Hugenholtz, Ken Whitehead, Owen W. Brown, Thomas E. Barchyn, Brian J. Moorman, Adam LeClair, Kevin Riddell, Tayler Hamilton
Article
Water Resources
Pablo Wainstein, Brian Moorman, Ken Whitehead
HYDROLOGICAL PROCESSES
(2014)
Article
Geography, Physical
Ken Whitehead, Brian Moorman, Pablo Wainstein
JOURNAL OF GLACIOLOGY
(2014)
Article
Multidisciplinary Sciences
Terry Fei Fan Ng, Li-Fang Chen, Yanchen Zhou, Beth Shapiro, Mathias Stiller, Peter D. Heintzman, Arvind Varsani, Nikola O. Kondov, Walt Wong, Xutao Deng, Thomas D. Andrews, Brian J. Moorman, Thomas Meulendyk, Glen MacKay, Robert L. Gilbertson, Eric Delwart
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2014)
Article
Environmental Sciences
Eleanor A. Bash, Brian J. Moorman, Allison Gunther
Article
Geography, Physical
Stephen J. A. Jennings, Michael J. Hambrey, Brian J. Moorman, Tom O. Holt, Neil F. Glasser
Summary: Using satellite remote sensing, this study demonstrates the validity of using ground-based structural observations of small valley glaciers to interpret structures in larger-scale ice masses. The study focuses on glaciers on Bylot Island, Canada, and finds that structures identified in ground observations, such as longitudinal lineations and crevasses, can be observed in optical satellite imagery. The study also suggests that areas with strong foliation appear darker than areas with weak foliation in satellite imagery.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Environmental Sciences
Andrew Clark, Brian Moorman, Dustin Whalen, Goncalo Vieira
Summary: This study investigates the potential strengths and limitations of an object-based approach integrated with an automated workflow for monitoring Arctic coastal erosion. The study achieves high classification accuracies and demonstrates that deep learning convolutional neural networks have wider applicability. The findings of this study contribute towards the broad-scale monitoring of Arctic coastal erosion.
Article
Environmental Sciences
Eleanor A. Bash, Lakin Wecker, Mir Mustafizur Rahman, Christine F. Dow, Greg McDermid, Faramarz F. Samavati, Ken Whitehead, Brian J. Moorman, Dorota Medrzycka, Luke Copland
Summary: Terrestrial photographic imagery combined with structure-from-motion (SfM) provides an easy-to-implement method for monitoring environmental systems. However, in-situ positioning data collection and identification of control points are primary roadblocks for using SfM in difficult-to-access locations and time series. A novel approach is proposed for georeferencing point clouds from terrestrial overlapping photos to a reference dataset using a Discrete Global Grid System (DGGS) and a modified iterative closest point algorithm. Results from case studies demonstrate the promise of the approach for georeferencing point clouds with acceptable accuracy, enabling remote monitoring for change-detection.
Article
Remote Sensing
Andrew Clark, Brian J. Moorman, Dustin Whalen
Summary: Monitoring and quantifying rapid changes in Arctic coasts is crucial due to above average warming and increasing erosion rates which have dramatic impacts on coastal ecosystems and communities. This study utilized high-resolution imagery from Unoccupied Aerial Vehicles to analyze two coastal sites in Canada and made methodological improvements to Arctic coastal measurements. The research highlighted the importance of measurement techniques and considerations for broad-scale monitoring and quantification.
CANADIAN JOURNAL OF REMOTE SENSING
(2023)
Article
Environmental Sciences
Ian T. Stevens, Tristram D. L. Irvine-Fynn, Arwyn Edwards, Andrew C. Mitchell, Joseph M. Cook, Philip R. Porter, Tom O. Holt, Matthias Huss, Xavier Fettweis, Brian J. Moorman, Birgit Sattler, Andy J. Hodson
Summary: Melting glacier ice surfaces host active microbial communities that play important roles in glacial melt, biogeochemical cycling, and downstream ecosystems. However, these communities are still poorly understood. This study found similar microbial abundances in surface meltwaters from eight glaciers across Europe, North America, and western Greenland, and these abundances were correlated with suspended sediment concentration. It is predicted that a large number of these microbes will be released into downstream ecosystems in the next few decades.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Geography, Physical
Naomi E. Ochwat, Shawn J. Marshall, Brian J. Moorman, Alison S. Criscitiello, Luke Copland
Summary: In spring 2018, two firn cores were extracted from Kaskawulsh Glacier in Yukon and analyzed for ice layer stratigraphy and density. The cores showed evidence of deep meltwater percolation and refreezing, with a high ice content and liquid water present. The firn has become denser and more ice-rich over time, and a perennial firn aquifer was discovered, indicating how firn may be evolving in response to climate change.
Article
Geography, Physical
Eleanor A. Bash, Brian J. Moorman
Article
Remote Sensing
Ken Whitehead, Chris H. Hugenholtz, Stephen Myshak, Owen Brown, Adam LeClair, Aaron Tamminga, Thomas E. Barchyn, Brian Moorman, Brett Eaton
JOURNAL OF UNMANNED VEHICLE SYSTEMS
(2014)
Article
Geography, Physical
K. Whitehead, B. J. Moorman, C. H. Hugenholtz
Article
Engineering, Environmental
Mikael Schlumpf, Jordy Hendrikx, John Stormont, Ryan Webb
Summary: The formation of wet-snow slab avalanches is related to the liquid water content and strength of the snow layers. However, current studies disagree on this relationship and there is limited understanding of snow layers with a saturation level of θ=7% and above.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
William R. Jacobson
Summary: This study investigates the kinematics of deformation in debris bands associated with an overdeepened basin in Iceland. The research reveals the presence of multiple fabric types, suggesting a complex deformation history. Furthermore, pure shear-dominated strain was observed in an ice-free sediment ridge on the glacier surface.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Shanpeng Cao, Caichu Xia, Shuwei Zhou, Yao Zhang
Summary: Precise evaluation of frost heaving force and surrounding rock plastic zone is crucial for preventing freezing damage in cold-region tunnels. This paper presents a new elastoplastic solution for tunnel frost heaving force considering double non-uniform frost heave and intermediate principal stress, which can better guide the frost resistance design of tunnels in cold regions.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Sina Niazi, Aimane Najmeddine, Maryam Shakiba
Summary: This study investigates the mechanical response and damage of asphalt concrete under freezing temperatures. A coupled thermo-hydro-mechanical constitutive framework is proposed and validated through simulations and experiments. The effects of microstructural constituents on the mechanical response are also studied through parametric analysis.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Shi-chun Cai, Xiao-hua Yang, Fei Ye
Summary: A calculation method based on the Winkler foundation model is proposed for analyzing the stress and deformation in excavation support structures in seasonally frozen soil regions. The method considers various factors and has been validated to exhibit good applicability.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Guanjun Wei, Chuanjin Lei, Maoning Gao, Hongyu Zhou, Xin Li, Chaoyue Zhang
Summary: This study introduces a novel approach to improve the accuracy of deformation prediction in frozen soil areas by integrating post-processing deformation from InSAR with a frost heave model using the EnKF assimilation algorithm. Experimental results show that this approach reduces the RMSE to 0.247 mm, indicating its high feasibility and practicality.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Cheng Xu, Yugui Yang, Shanshan Hou, Hui Zhang, Chenxiang Li
Summary: This study investigates the properties and characteristics of frozen loess through nuclear magnetic resonance (NMR) tests and flexural tests. The results show that as the temperature decreases, the pore ice content in frozen loess rapidly increases, making the phase transition of residual unfrozen water difficult. The flexural strength, toughness, and roughness of the fracture surface of frozen loess vary under different freezing temperatures and water content conditions.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Jianguo Lu, Wansheng Pei, Mingyi Zhang, Xusheng Wan, Jiacheng Zhang, Yindong Wang
Summary: This paper investigates the effects of freeze-thaw cycles and salt erosion on the mechanical and microstructural properties of concrete modified with nano-TiO2 and nano-SiO2. The results show that the added nanoparticles and environment media significantly influence the overall performance of concrete samples. The SCF has the greatest influence on degradation, and the compressive strength of NS-modified concrete is lower than that of NT-modified concrete. The optimal nanoparticles ratios for NS and NT modified concretes are 1% and 2%, respectively. Furthermore, NS modification leads to better filling effect on pore structure and larger crystals on the concrete surface compared to NT modification. In the first 90 freeze-thaw cycles, the gel micro-pores increase while the macro-pores decrease, but this trend reverses within the 90-150 cycles. This research provides important insights into the erosion and frost resistance of nano-concretes in marine and cold region engineering.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Florian McLelland, Floris van Breugel
Summary: In this study, a proof-of-concept approach for automatically assessing qualitative aspects of snow type while skiing using strain sensors is explored. The algorithm developed achieves a 97% accuracy in correctly assigning qualitative labels to different segments of a skiing trajectory. This method has the potential for improving quantitative characterization of ski performance, providing snow-specific recommendations, and developing skis with automated stiffness tuning based on snow type.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Purushottam Kumar Garg, Aparna Shukla, Mohd. Farooq Azam
Summary: This study remotely investigates 25 well-distributed glaciers in the western Himalaya and finds that these glaciers were in an overall retreating phase from 1990 to 2015. The study also reveals changes in glacier dynamics before and after 2000, including reduced terminus retreat and deglaciation rates, increased surface velocity, and the presence of more glacial lakes and supraglacial debris. The study highlights the importance of topography and local surface conditions in the heterogeneity of glacier response to climate.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Junru Chen, Shuna Feng, Lang Jia, Jiagui Hou, Miles Dyck, Xiaobin Li, Qingbai Wu, Hailong He
Summary: The heat pulse method is commonly used to measure thermal properties of frozen soil, snow, or glaciers, but the phase change caused by ice melting affects the measurement accuracy. This study observed the thermal response of ice under different heating strategies and compared numerical simulations and analytical solutions. The results showed that optimizing phase change parameters improved accuracy and the numerical method effectively improved the calculation accuracy of ice thermal conductivity.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Kazuma Fukui, Chiemi Iba
Summary: By studying the evolution of pore water pressure in brick walls during cyclic freezing and thawing, we found that the water pressure in a south facing wall increases significantly during the night in cold regions. Incomplete freeze-thaw cycles are more damaging to building materials than a monotonous repetition of complete freezing and thawing.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Yasir A. Malik, Norbert Karpen, Elmar Bonaccurso, Ilia Roisman, Jeanette Hussong, Philippe Villedieu
Summary: This study quantitatively analyzes the accretion and shedding phenomena caused by ice crystal icing on heated and non-heated surfaces. Experimental findings show the accretion threshold and shed areas under different parametric conditions. The results not only consolidate previous studies, but also identify new phenomena on unheated surfaces with mixed-phase conditions at negative wet bulb temperatures and positive wet bulb temperatures.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
Ezieddin Madi, Kevin Pope, Weimin Huang
Summary: This study experimentally investigates the impact of ice thickness on the energy required for de-icing. It is found that an increase in ice thickness at the heater's edge leads to a significant increase in de-icing duration. The results suggest that employing a correlation between ice thickness at different locations can help reduce the thermal energy needed for ice removal from airfoil or cylindrical surfaces.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Environmental
K. Riska, R. Bridges
Summary: Understanding the properties and parameters of ice growth models is crucial for assessing the impact of ice on facilities and ship navigation. This paper investigates the theoretical formulations for ice growth and compares calculated results with measurement data. The study focuses on level sea ice growth models and their application in brash ice consolidation modeling, considering factors such as snow cover, salinity, porosity, and atmospheric boundary including wind effect. The findings contribute to a better understanding of ice growth and consolidation processes, informing modeling techniques for marine design and operations.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)