Results 21 to 30 of about 216 (140)

The structural glaciology of Kongsvegen, Svalbard, and its role in landform genesis [PDF]

Journal of Glaciology, 1998
AbstractMapping of the structural glaciology of Kongsvegen, Svalbard, reveals evidence for four main deformational structures. These are stratification, longitudinal foliation, thrusts and crevasse traces. These structures are considered in terms of their contribution to debris entrainment, transport and subsequent landform development.
Neil F. Glasser, Michael J. Hambrey, Kevin R. Crawford, Matthew R. Bennett, David Huddart   +4 more
openaire   +1 more source

Internal structure of a Himalayan debris-covered glacier revealed by borehole optical televiewing

Journal of Glaciology, 2023
Characterising the structures within glaciers can give unique insight into ice motion processes. On debris-covered glaciers, traditional structural glaciological mapping is challenging because the lower glacier is hidden by the supraglacial debris layer.
Katie E. Miles, Bryn Hubbard, Evan S. Miles, Duncan J. Quincey, Ann V. Rowan   +4 more
doaj   +1 more source

A structural glaciological analysis of the 2002 Larsen B ice-shelf collapse [PDF]

Journal of Glaciology, 2008
AbstractThis study provides a detailed structural glaciological analysis of changes in surface structures on the Larsen B ice shelf on the Antarctic Peninsula prior to its collapse in February–March 2002. Mapped features include the ice-shelf front, rifts, crevasses, longitudinal linear surface structures and meltwater features.
N.F. Glasser, T.A. Scambos
openaire   +1 more source

The triggers of the disaggregation of Voyeykov Ice Shelf (2007), Wilkes Land, East Antarctica, and its subsequent evolution

Journal of Glaciology, 2021
The weakening and/or removal of floating ice shelves in Antarctica can induce inland ice flow acceleration. Numerical modelling suggests these processes will play an important role in Antarctica's future sea-level contribution, but our understanding of ...
Jennifer F. Arthur, Chris R. Stokes, Stewart S. R. Jamieson, Bertie W. J. Miles, J. Rachel Carr, Amber A. Leeson   +5 more
doaj   +1 more source

A Comparison of Plasticity Regularization Approaches for Geodynamic Modeling

Geochemistry, Geophysics, Geosystems, 2023
The emergence, geometry and activation of faults are intrinsically linked to frictional rheology. The latter is thus a central element in geodynamic simulations which aim at modeling the generation and evolution of fault zones and plate boundaries ...
Thibault Duretz, Ludovic Räss, René deBorst, Tim Hageman   +3 more
doaj   +1 more source

Airborne Snow Radar Data Simulation With Deep Learning and Physics-Driven Methods

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Monitoring properties of ice sheets in polar regions is one of the main challenges in glaciology. There is a large amount of heterogeneous radar data from the polar regions that have been gathered through expensive missions.
Masoud Yari, Oluwanisola Ibikunle, Debvrat Varshney, Tashnim Chowdhury, Argho Sarkar, John Paden, Jilu Li, Maryam Rahnemoonfar   +7 more
doaj   +1 more source

Topography reconstruction and evolution analysis of outlet glacier using data from unmanned aerial vehicles in Antarctica

International Journal of Applied Earth Observations and Geoinformation, 2023
Reconstruction of glacial topography is important for assessing the ice dynamics of glaciers in the past and understanding how they may respond to climate change in the future.
Gang Qiao, Xiaohan Yuan, Igor Florinsky, Sergey Popov, Youquan He, Hongwei Li   +5 more
doaj   +1 more source

Concentrated, ‘pulsed’ axial glacier flow: structural glaciological evidence from Kvíárjökull in SE Iceland [PDF]

Earth Surface Processes and Landforms, 2017
AbstractA detailed structural glaciological study carried out on Kvíárjökull in SE Iceland reveals that recent flow within this maritime glacier is concentrated within a narrow corridor located along its central axis. This active corridor is responsible for feeding ice from the accumulation zone on the south‐eastern side of Öræfajökull to the lower ...
Emrys Phillips, Jez Everest, David J.A. Evans, Andrew Finlayson, Marek Ewertowski, Ailsa Guild, Lee Jones   +6 more
openaire   +4 more sources

Structural, tectonic and glaciological controls on the evolution of fjord landscapes

Geomorphology, 2009
Abstract The fjord landscape of South America, stretching ~ 1500 km between Golfo Corcovado (~ 43°S) and Tierra del Fuego (~ 56°S), is the largest continuous fjord landscape on Earth. This paper presents the results of new structural geological and geomorphological mapping of this landscape using optical satellite images and digital elevation models.
Glasser, Neil F., Ghiglione, Matias
openaire   +2 more sources

Tectonic processes in Svalbard tide-water glacier surges: evidence from structural glaciology [PDF]

Journal of Glaciology, 1994
AbstractThe tectonic effects of a glacier surge differ from those of steady state because flow is driven by longitudinal stresses rather than shear stresses. The orientations of recently formed crevasses, indicating the directions of the principal stresses, have been used to investigate tectonic processes in glacier surges recorded by repeat aerial ...
Hodgkins Richard, Julian A. Dowdeswell
openaire   +1 more source