Results 1 to 10 of about 187 (113)
Structural glaciology of Isunguata Sermia, West Greenland
Journal of Maps, 2018 We present a 1:42,000 scale map of Isunguata Sermia, a land-terminating outlet glacier draining the western-sector of the Greenland Ice Sheet. Structure-from-Motion software applied to ∼3,600 aerial images collected by a fixed-wing unmanned aerial ...
Christine Jones +3 more
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Structural evolution during a surge in the Paulabreen glacier system, Svalbard
Journal of Glaciology, 2023 We assess the evolution of glaciological structures during the 2003–05 surge in the Paulabreen glacier system, Svalbard. Glaciological structures on the glacier surface were mapped using aerial photographs captured in the early stages of the surge (2003)
Harold Lovell, Edward J. Fleming
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Microstructures in a shear margin: Jarvis Glacier, Alaska
Journal of Glaciology, 2021 Microstructures, including crystallographic fabric, within the margin of streaming ice can exert strong control on flow dynamics. To characterize a natural setting, we retrieved three cores, two of which reached bed, from the flank of Jarvis Glacier ...
Christopher Gerbi +9 more
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Thermal refraction: implications for subglacial heat flux
Journal of Glaciology, 2021 In this study, we explore small-scale (~1 to 20 km) thermal-refractive effects on basal geothermal heat flux (BGHF) at subglacial boundaries resulting from lateral thermal conductivity contrasts associated with subglacial topography and geologic contacts.
Simon Willcocks +2 more
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Journal of Glaciology, 2022 Since the mid-20th century, ice shelves around the Antarctic Peninsula have declined in extent and thickness, and some have shown signs of structural instability.
Tom Holt, Neil F Glasser
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Journal of Glaciology, 2022 Polycrystalline ice is known to exhibit macroscopic anisotropy in relative permittivity (ɛ) depending on the crystal orientation fabric (COF). Using a new system designed to measure the tensorial components of ɛ, we investigated the dielectric anisotropy
Tomotaka Saruya, Shuji Fujita, Ryo Inoue
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A stratigraphy-based method for reconstructing ice core orientation
Annals of Glaciology, 2021 Ever since the first deep ice cores were drilled, it has been a challenge to determine their original, in-situ orientation. In general, the orientation of an ice core is lost as the drill is free to rotate during transport to the surface. For shallow ice
Julien Westhoff +8 more
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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 +4 more
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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 +5 more
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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 +3 more
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