Results 21 to 30 of about 14,168 (295)
Maximizing friction in the erosion of glacial valleys
Journal of Glaciology, 2020 The cross-sectional profile of a glacial valley can be obtained with a variational principle in which the friction against the valley walls and the glacier bed is extremized, subject to a Lagrangian constraint.
Valerio Faraoni
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Journal of Glaciology, 2022 To understand snow structure and snowmelt timing, information about flows of liquid water within the snowpack is essential. Models can make predictions using explicit representations of physical processes, or through parameterization, but it is difficult
Alex Priestley +5 more
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Annals of Glaciology, 2019 Fast ice flow is associated with the deformation of subglacial sediment. Seismic shear velocities, Vs, increase with the rigidity of material and hence can be used to distinguish soft sediment from hard bedrock substrates.
Siobhan F. Killingbeck +5 more
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Contrasting geophysical signatures of a relict and an intact Andean rock glacier
The Cryosphere, 2022 Abstract. In semi-arid Chile, rock glaciers cover more surface area than glaciers and are potentially important water reserves. To understand their current and future hydrological role, it is necessary to characterize their internal structure (e.g. internal boundaries and ice, air, water and rock content).
G. de Pasquale +5 more
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Electrical and Electromagnetic Geophysical Prospecting for the Monitoring of Rock Glaciers in the Dolomites, Northeast Italy [PDF]
Sensors, 2021 The monitoring of rock glaciers plays a relevant role in relation to natural hazards in high mountain environments. Due to the climate warming, mountain permafrost is thawing, and its degradation is influencing the triggering and the evolvement of processes such as rockfalls, landslides, debris flows and floods.
Pavoni M., Sirch F., Boaga J.
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Acquisition of a 3 min, two-dimensional glacier velocity field with terrestrial radar interferometry
Journal of Glaciology, 2017 Outlet glaciers undergo rapid spatial and temporal changes in flow velocity during calving events. Observing such changes requires both high temporal and high spatial resolution methods, something now possible with terrestrial radar interferometry. While
DENIS VOYTENKO +7 more
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Frontiers in Earth Science, 2023 Rock glaciers are the most abundant (peri) glacial landform in the semiarid Andes (SA, 29–34°S), covering about three times the area of mountain glaciers.
Gonzalo Navarro +6 more
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Patterns in glacial-earthquake activity around Greenland, 2011–13
Journal of Glaciology, 2017 Glacial earthquakes are caused by large iceberg calving events, which are an important mechanism for mass loss from the Greenland ice sheet. The number of glacial earthquakes in Greenland has increased sixfold over the past two decades.
KIRA G. OLSEN, MEREDITH NETTLES
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Journal of Glaciology, 2021 Knowledge of glacier volume is crucial for ice flow modelling and predicting the impacts of climate change on glaciers. Rugged terrain, harsh weather conditions and logistic costs limit field-based ice thickness observations in the Himalaya.
Mohd Anul Haq +2 more
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Advances in geophysical exploration of ice sheets and glaciers [PDF]
Journal of Glaciology, 1975 AbstractThe techniques of geophysical exploration can be used in a number of ways to investigate the internal characteristics of ice bodies. The application of radio-echo sounding is discussed elsewhere by Robin (1975[a]) so is not considered here except for a few special cases.
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