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
Geosciences, Multidisciplinary
Chukwuebuka Emeh, Ogbonnaya Igwe, Tochukwu A. S. Ugwoke
Summary: Gully erosion studies are usually complex and expensive due to multiple causative factors and heterogeneity of geologic materials. In developing countries with limited resources for environmental studies, thorough studies are rarely carried out, making it difficult to solve problems arising from this hazard. However, remotely sensed data can be utilized with geospatial analytical tools to solve complex gully erosion problems. A study in Anambra State, Nigeria integrated geomorphologic, environmental, and geotechnical data to analyze susceptibility to gullying. The results showed factors such as slope angle, soil plasticity, and population density contribute to soil's susceptibility to gully erosion.
Article
Geography, Physical
Shannon M. Hibbard, Gordon R. Osinski, Etienne Godin
Summary: Conspicuous Vermicular Ridge Features (VRFs) with unique morphology have been discovered along the coast of Dundas Harbour, Devon Island, Nunavut, Canada. These features are believed to be ring-ridge moraines formed by paraglacial processes, representing a first documentation of such features in Nunavut, Canada.
Article
Environmental Sciences
Keyvan Ranjbar, Norm T. O'Neill, Liviu Ivanescu, James King, Patrick L. Hayes
Summary: A dust plume reaching 1 km in altitude was detected over Lake Hazen in springtime Nunavut, Canada using satellite remote sensing techniques. This study highlights the significance of Arctic-adapted remote sensing technologies in identifying and characterizing locally generated dust plumes.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Environmental Sciences
Yi Luo, Aidi Huo, Luying Yang, Zhixin Zhao, Adnan Ahmed, Ahmed Elbeltagi, Mohamed EL-Sayed Abuarab, Hossein Ganjidoust
Summary: A study was conducted to quantify the erosion of a small watershed under the construction of a gully head landfill in the Loess Plateau. The results showed that the GCHP project positively influenced soil erosion control, with a decrease in annual runoff by 13.13% and sediment yield by 37.61% after gully head landfill. This study provides an effective verification method for soil loss control schemes and promotes ecological priority and efficient management in the Loess gully area, benefiting the ecological protection and high-quality development of the Yellow River Basin.
Review
Geography, Physical
Melanie E. Roberts, Ryan M. Burrows, Robin N. Thwaites, David P. Hamilton
Summary: This review synthesizes contemporary models for classical gully erosion and identifies nine opportunities for the development of gully erosion models.
Article
Environmental Sciences
Yanru Wen, Till Kasielke, Hao Li, Bin Zhang, Harald Zepp
Summary: Terracing of hillslopes can lead to gully erosion, as observed in the Black Soil Region of Northeast China. Improperly designed terraces can cause runoff concentration and eventually result in gully incision. Proper countermeasures are suggested to prevent further soil loss and land degradation on abandoned terraced hillslopes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Anne Kinsey-Henderson, Aaron Hawdon, Rebecca Bartley, Scott N. Wilkinson, Thomas Lowe
Summary: In-depth understanding of gully erosion processes is crucial for monitoring gully remediation efforts, and fine-scale monitoring can be achieved using Hand-held Laser Scanning systems (HLS). The study quantified errors in measuring gully morphology and erosion over a four year period, finding that HLS provided similar levels of accuracy and was relatively faster compared to TLS and RTK. Improvements in error rates could potentially be made by scanning during times of the year with less ground vegetation cover.
Article
Environmental Sciences
Jie Tang, Gang Liu, Yun Xie, Yongqiu Wu, Daan Wang, Yan Gao, Lingqin Meng
Summary: This study investigated the combined effects of tillage methods and topographic variation on gully erosion in three different geomorphic areas in the black soil region of Northeastern China. The results showed that topography was the dominant control on gully erosion and different tillage methods affected the frequency of gully occurrence. The study highlights the importance of considering both topographic variations and tillage methods to control gully erosion.
LAND DEGRADATION & DEVELOPMENT
(2022)
Article
Geosciences, Multidisciplinary
Jordan B. R. Eamer, David Didier, Dan Kehler, Ian Manning, David Colville, Gavin Manson, Alexandre Jagot, Vladimir E. Kostylev
Summary: The impacts of climate change, especially sea-level rise, will have a significant effect on small oceanic islands. This study looks at the changes in coastline position on Sable Island, Canada using 60 years of airphoto records. The majority of the coastline is found to be in retreat, with differences in response between the south and north sides of the island due to different beach-dune system morphologies. The projected loss of vegetative community due to shoreline retreat suggests island instability as a result of coastline migration.
CANADIAN JOURNAL OF EARTH SCIENCES
(2023)
Article
Environmental Sciences
Partha Modak, Mrinal Mandal, Susanta Mandi, Biswajit Ghosh
Summary: This study conducted an assessment on gully erosion vulnerability and estimated soil loss in the Rupai watershed of the eastern plateau fringe of India using the AHP model and geospatial technology. The results revealed that around 49% of the watershed belonged to the high to very high gully erosion vulnerability zone, and approximately 29% of the study area experienced high to very high soil erosion risk.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Geography, Physical
Anne Morgenstern, Pier Paul Overduin, Frank Gunther, Samuel Stettner, Justine Ramage, Lutz Schirrmeister, Mikhail N. Grigoriev, Guido Grosse
Summary: Through inventory and assessment of thermo-erosional valleys in ice-rich coastal lowlands adjacent to the Siberian Laptev Sea, it was found that thermo-erosional valleys are significant but often overlooked landforms of permafrost degradation, impacting biogeochemical cycling, sediment transport, and hydrology in the region.
PERMAFROST AND PERIGLACIAL PROCESSES
(2021)
Article
Geography, Physical
Robin N. Thwaites, Andrew P. Brooks, Timothy J. Pietsch, John R. Spencer
Summary: Research suggests that inconsistencies in the definition and classification of gullies have hindered the development of a unified theory in this field. By proposing to redefine and classify gullies based on morphogenetic attributes, an effective, practical, generic gully classification scheme has been established.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Environmental Sciences
Greg Robson, Paul Treitz, Scott F. Lamoureux, Kevin Murnaghan, Brian Brisco
Summary: By using DInSAR technology in combination with various data sources, it was found that in continuous permafrost environments, seasonal surface displacements mainly occur in low-lying, wet, and steep areas, with maximum magnitudes of up to 10 cm but generally less than 4 cm.
Article
Geosciences, Multidisciplinary
Andres Penuela, Antonio Hayas, Juan Infante-Amate, Pablo Ruiz-Montes, Arnaud Temme, Tony Reimann, Adolfo Pena-Acevedo, Tom Vanwalleghem
Summary: The cultivation of cereal and olives has had a significant impact on soil erosion in southern Spain since human settlement. The study of two catchments revealed a strong connection between agricultural land management practices and soil erosion over the past seven millennia.
Article
Geography, Physical
James Gray, Gautier Davesne, Daniel Fortier, Etienne Godin
PERMAFROST AND PERIGLACIAL PROCESSES
(2017)
Article
Astronomy & Astrophysics
Gordon R. Osinski, Melissa Battler, Christy M. Caudill, Raymond Francis, Timothy Haltigin, Victoria J. Hipkin, Mary Kerrigan, Eric A. Pilles, Alexandra Pontefract, Livio L. Tornabene, Pierre Allard, Joseph N. Bakambu, Katiyayni Balachandran, David W. Beaty, Daniel Bednar, Arya Bina, Matthew Bourassa, Fenge Cao, Peter Christoffersen, Byung-Hun Choe, Edward Cloutis, Kristen Cote, Matthew Cross, Bianca D'Aoust, Omar Draz, Bryce Dudley, Shamus Duff, Tom Dzamba, Paul Fulford, Etienne Godin, Jackie Goordial, Anna Grau Galofre, Taylor Haid, Elise Harrington, Tanya Harrison, Jordan Hawkswell, Dylan Hickson, Patrick Hill, Liam Innis, Derek King, Jonathan Kissi, Joshua Laughton, Yaozhu Li, Elizabeth Lymer, Catherine Maggiori, Matthew Maloney, Cassandra L. Marion, John Maris, Sarah Mcfadden, Scott M. McLennan, Anna Mittelholz, Zachary Morse, Jennifer Newman, Jonathan O'Callaghan, Alexis Pascual, Parshati Patel, Martin Picard, Ian Pritchard, Jordan T. Poitras, Catheryn Ryan, Haley Sapers, Elizabeth A. Silber, Sarah Simpson, Racel Sopoco, Matthew Svensson, Gavin Tolometti, Diego Uribe, Rebecca Wilks, Kenneth H. Williford, Tianqi Xie, William Zylberman
PLANETARY AND SPACE SCIENCE
(2019)
Article
Geography, Physical
Etienne Godin, Gordon R. Osinski, Tanya N. Harrison, Alexandra Pontefract, Michael Zanetti
PERMAFROST AND PERIGLACIAL PROCESSES
(2019)
Article
Astronomy & Astrophysics
Matthew Bourassa, Gordon R. Osinski, Livio L. Tornabene, Christy M. Caudill, Peter Christoffersen, Michael G. Daly, Etienne Godin, Eric A. Pilles, Catheryn Ryan
PLANETARY AND SPACE SCIENCE
(2019)
Article
Astronomy & Astrophysics
Christy M. Caudill, Alexandra J. Pontefract, Gordon R. Osinski, Livio L. Tornabene, Eric A. Pilles, Melissa Battler, Raymond Francis, Etienne Godin, Anna Grau Galofre, Timothy Haltigin, Victoria J. Hipkin, Anna Mittelholz, Jordan Poitras, Sarah L. Simpson, Matthew Svensson, Tianqi Xie, Zachary R. Morse
PLANETARY AND SPACE SCIENCE
(2019)
Article
Astronomy & Astrophysics
Shannon M. Hibbard, Nathan R. Williams, Matthew P. Golombek, Gordon R. Osinski, Etienne Godin
Summary: Viscous flow features, including lobate debris aprons and lineated valley fill, are common ice-related features found across the mid-latitudes of Mars. The sinuous and lobate features in Arcadia Planitia are believed to be buried debris-covered glaciers formed during higher obliquity periods in Mars' recent past. These features appear to be channelized ice that once flowed but currently reside in a flat-lying region.
Article
Astronomy & Astrophysics
R. J. Soare, S. J. Conway, J-P Williams, M. Philippe, L. E. Mc Keown, E. Godin, J. Hawkswell
Summary: Ice complexes are common landscapes in Arctic coastal plains on Earth, formed by freeze-thaw cycling of water and characterized by features like thermokarst terrain, lakes, basins, and ice-wedge polygons. The hypothesis of ice-rich terrain on Mars remains unvalidated due to lack of regolith samples. The similarities between ice and sand-wedge polygons on Mars have complicated the understanding of ice-wedge hypotheses.
Article
Geography, Physical
Shannon M. Hibbard, Gordon R. Osinski, Etienne Godin
Summary: Conspicuous Vermicular Ridge Features (VRFs) with unique morphology have been discovered along the coast of Dundas Harbour, Devon Island, Nunavut, Canada. These features are believed to be ring-ridge moraines formed by paraglacial processes, representing a first documentation of such features in Nunavut, Canada.
Article
Geography, Physical
Lin Chen, Clifford Voss, Daniel Fortier, Jeffrey M. McKenzie
Summary: Surface energy balance (SEB) strongly impacts the thermal state of permafrost, cryohydrological processes, and infrastructure stability. This study developed a SEB model using an experimental road section of the Alaska Highway to quantify surface energy components and ground surface temperature for different land cover types. Results showed that heat entering the embankment center and slope is mainly controlled by net radiation, and less by sensible heat flux, leading to earlier snowpack disappearance on the embankment slope in spring due to lateral heat flux from the center. Winter insulation from snow cover on the embankment slope reduces heat loss by three times compared to the embankment center.
PERMAFROST AND PERIGLACIAL PROCESSES
(2021)
Article
Environmental Sciences
A. Ola, D. Fortier, S. Coulombe, J. Comte, F. Domine
Summary: The distribution of soil carbon stocks varies among different geomorphological terrain units in glacial valleys of the Arctic, with the highest soil carbon and nitrogen content found in humid polygons. These findings are crucial for refining estimates of soil carbon and nitrogen stocks in the pan-Arctic region and improving climate models.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Article
Green & Sustainable Science & Technology
Lin Chen, Yuanming Lai, Daniel Fortier, Stuart A. Harris
Summary: This study investigates the impacts of snow cover on the air circulation pattern and finds that snow greatly weakens the cooling effect of closed embankment slopes. On the other hand, a U-shape closed embankment performs better in cooling due to stronger air convection in winter. The results suggest that a U-shape embankment can be a potential long-term solution to mitigate permafrost thaw.
Article
Plant Sciences
Lucas Deschamps, Vincent Maire, Lin Chen, Daniel Fortier, Gilles Gauthier, Amelie Morneault, Elisabeth Hardy-Lachance, Isabelle Dalcher-Gosselin, Francois Tanguay, Charles Gignac, Jeffrey M. McKenzie, Line Rochefort, Esther Levesque
Summary: Understanding the feedbacks caused by the release of carbon stored in permafrost and the direct impacts of climate variations on permafrost dynamics is crucial. Indirect effects of global change, such as changes in soil nutrient availability and grazing pressure, can also impact soil properties and heat transfer in the Arctic tundra, affecting the resilience of Arctic ecosystems.
JOURNAL OF ECOLOGY
(2023)
Article
Environmental Sciences
Lin Chen, Daniel Fortier, Jeffrey M. McKenzie, Clifford I. Voss, Pierrick Lamontagne-Halle
Summary: This study investigates the impact of heat advection on the formation of permafrost under road embankments using a coupled groundwater flow and energy transport numerical model. The results show that heat advection accelerates the rate of permafrost thawing and doubles the depth of the permafrost table. In a changing climate, mobile water flow will play a critical role in permafrost thaw and talik development under road embankments, leading to increased maintenance costs and reduced long-term stability of the infrastructure.
WATER RESOURCES RESEARCH
(2023)
Article
Geography, Physical
Frederic Bouchard, Daniel Fortier, Michel Paquette, Vincent Boucher, Reinhard Pienitz, Isabelle Laurion
Article
Geography, Physical
Gautier Davesne, Daniel Fortier, Florent Domine, James T. Gray
