Article
Geosciences, Multidisciplinary
Argha Banerjee, Chandan Sarangi, Irfan Rashid, Saurabh Vijay, Nadeem Ahmad Najar, Amit Singh Chandel
Summary: Tiny cryoconite holes commonly found on glacier surfaces have a significant impact on glacier mass balance and runoff. By modeling and in situ observations, it is discovered that the steady depth of these holes is approximately proportional to their radius, providing a useful tool for estimating their contribution to glacier mass balance and runoff.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
D. R. Rounce, R. Hock, R. W. McNabb, R. Millan, C. Sommer, M. H. Braun, P. Malz, F. Maussion, J. Mouginot, T. C. Seehaus, D. E. Shean
Summary: Supraglacial debris affects glacier mass balance by either enhancing or reducing surface melting. Accounting for debris can reduce sub-debris melt by up to 37%, impacting regional mass balance by 0.40 m water equivalent per year. Recent observations suggest differences in ice dynamics are the primary reason for thinning rates over debris-covered and clean ice glaciers.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Nigel Van Nieuwenhuizen, John B. Lindsay, Ben DeVries
Summary: Fine-resolution LiDAR DEMs can accurately represent surface features such as road and railway embankments. A novel algorithm was proposed to identify embankments in LiDAR DEMs, achieving moderate to high accuracy. The technique showed good performance on test DEMs from southwest Ontario, Canada, with acceptable processing times for practical applications.
Article
Environmental Sciences
Gunjan Silwal, Mohamed E. Ammar, Amrit Thapa, Barrie Bonsal, Monireh Faramarzi
Summary: This study developed a glacier melt, mass balance, and evolution modelling framework using three temperature index melt modelling approaches. The results showed that the most sensitive parameter is temperature Lapse rate (LR), but the parameter responses vary depending on the melt model structure and input data with increasing model complexity. This study provides important information for modelling glacier melt and evolution at a regional scale.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Caroline Aubry-Wake, Andre Bertoncini, John W. Pomeroy
Summary: The impacts of upwind wildfire activity on glacier melt were investigated, and it was found that the activities influenced surface glacier melt through deposition of soot on the glacier and the impact of smoke on atmospheric conditions. The study provides insights into the relationship between wildfires and glacier melt.
Article
Chemistry, Multidisciplinary
Ivan Vulic, Mirko Borisov, Radomir Prodanovic, Dejan Rancic, Vladimir M. Petrovic, Stevan Stankovski, Gordana Ostojic
Summary: The quality of DEMs is evaluated based on their spatial resolution and the type of terrain. This study analyzed LiDAR-based DEMs and compared them with radar recording method results. A model was developed to ensure the non-repudiation and protection of DEM data in security-sensitive systems, demonstrating the detection of even the smallest changes and proving data authenticity and the sender's non-repudiation.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Civil
Dhiraj Pradhananga, John W. Pomeroy
Summary: This article introduces a comprehensive glacier hydrology model developed within the Cold Regions Hydrological Modelling platform, which was applied to simulate the hydrology of glacier research basins in the Canadian Rockies. The model was successfully tested against observed data and found to accurately simulate various processes related to glacier hydrology. It also revealed that increased glacier ice melt contributions are the main reason for the increased discharge.
JOURNAL OF HYDROLOGY
(2022)
Article
Physics, Fluids & Plasmas
Marceau Henot, Vincent J. Langlois, Nicolas Plihon, Nicolas Taberlet
Summary: Dirt cones are meter-scale structures formed by ice cones covered with a layer of debris. We conducted field observations, laboratory experiments, and numerical simulations to understand the formation process. We found that the insulating properties of the debris layer reduce ice melting, leading to differential ablation and the formation of conical shapes. The cones reach a steady state when the insulation compensates for the heat flux. Our findings allowed us to develop a model that accurately reproduces field observations and experimental results.
Article
Environmental Sciences
Andrej Novak, Kristof Ostir
Summary: Alpine topography is shaped by complex geomorphological processes, with Quaternary sedimentary bodies being the youngest and most diverse landforms. The use of digital elevation models and visualization techniques such as analytical hillshading can aid in identifying and studying Quaternary sedimentary bodies and processes in alpine landscapes.
Article
Environmental Sciences
Antonio J. Ortiz-Villarejo, Luis-M Gutierrez Soler
Summary: This article presents a low-cost, easy way methodology for diachronically analyzing terrain to search for archaeological evidence, using orthophotographs, DEMs, and LiDAR data. It allows researchers with small budgets and basic GIS and photogrammetry knowledge to undertake aspects of their projects without specialist support.
Article
Environmental Sciences
Wang Panpan, Li Zhongqin, Xu Chunhai, Wang Puyu
Summary: The Karakoram Mountains are well known for their widespread surge-type glaciers and slight glacier mass gains. Glaciers are sensitive indicators of climate change and their shrinkage due to climate change can significantly affect regional water resources. A study on the Shaksgam River Basin showed that glacier area has decreased since 2000, with the southeast, east, and south directions being the most affected.
JOURNAL OF ARID LAND
(2021)
Article
Environmental Sciences
Joanna Gudowicz, Renata Paluszkiewicz
Summary: The study developed a GIS toolbox for automatically extracting 26 morphometric characteristics of concave landforms, successfully applied to 21 erosion-denudation valleys in a glacial area, showing a 12% average level difference in volume parameter assessment.
Article
Geography, Physical
Claudio Bravo, Andrew N. Ross, Duncan J. Quincey, Sebastian Cisternas, Andres Rivera
Summary: Research on the Southern Patagonia Icefield suggests that glacial ablation is influenced by energy balance, with significant differences in climatic conditions and energy fluxes between the western and eastern parts of the icefield.
JOURNAL OF GLACIOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Jakob F. Steiner, Philip D. A. Kraaijenbrink, Walter W. Immerzeel
Summary: Debris-covered glaciers, especially in high-mountain Asia, have been increasingly studied in recent years. Field-based observations of distributed mass loss are limited, and factors affecting melt under debris cover remain poorly understood. Research on the Lirung Glacier in the Himalayas utilized multi-year observations to quantify variables influencing melt, highlighting the sensitivity of melt to thermal conductivity and debris thickness. The study also developed a simple melt model applicable for larger scale studies, showing promise for quantifying melt from debris-covered glaciers at a catchment scale.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Water Resources
Sheng Wang, Tandong Yao, Jianchen Pu, Jinfeng Wang
Summary: This study focuses on the importance of future glacier changes for the sustainable use of regional water resources and the survival and development of the densely populated Tibetan Plateau and surrounding regions. A distributed energy-mass balance model is used to simulate the historical and future mass balance and ice volume of Qiyi Glacier from 1980 to 2100. The study aims to illuminate the spatial and temporal patterns of mass balance and energy balance, forecast future changes under different scenarios, and identify the timing of peak ice loss.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)