Results 61 to 70 of about 985 (182)

Transition Between Mechanical and Geometric Controls in Glacier Crevassing Processes

Geophysical Research Letters
Herein, fast fracture initiation in glacier ice is modeled using a Material Point Method and a simplified constitutive law describing tensile strain softening.
Hugo Rousseau, Johan Gaume, Lars Blatny, Martin P. Lüthi   +3 more
doaj   +1 more source

Characterization of seasonal glacial seismicity from a single-station on-ice record at Holtedahlfonna, Svalbard

Annals of Glaciology, 2019
Glacial seismicity provides important insights into glacier dynamic processes. We study the temporal distribution of cryogenic seismic signals (icequakes) at Holtedahlfonna, Svalbard, between April and August 2016 using a single three-component sensor ...
Andreas Köhler, Valerie Maupin, Christopher Nuth, Ward van Pelt   +3 more
doaj   +1 more source

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, Jonathan Ryan, Tom Holt, Alun Hubbard   +3 more
doaj   +1 more source

Crevasse density, orientation and temporal variability at Narsap Sermia, Greenland. [PDF]

J Glaciol, 2023
Van Wyk de Vries M, Lea JM, Ashmore DW.
europepmc   +1 more source

Direct observations of melting, freezing, and ocean circulation in an ice shelf basal crevasse. [PDF]

Sci Adv, 2023
Washam P, Lawrence JD, Stevens CL, Hulbe CL, Horgan HJ, Robinson NJ, Stewart CL, Spears A, Quartini E, Hurwitz B, Meister MR, Mullen AD, Dichek DJ, Bryson F, Schmidt BE.   +14 more
europepmc   +1 more source

Horizontal force-balance calving laws: Ice shelves, marine- and land-terminating glaciers

Journal of Glaciology
Predicting calving in glacier models is challenging, as observations of diverse calving styles appear to contradict a universal calving law. Here, we generalize and apply the analytical Horizontal Force-Balance fracture model from ice shelves to land ...
Niall Bennet Coffey, Ching-Yao Lai
doaj   +1 more source

Crevasse refreezing and signatures of retreat observed at Kamb Ice Stream grounding zone. [PDF]

Nat Geosci, 2023
Lawrence JD, Washam PM, Stevens C, Hulbe C, Horgan HJ, Dunbar G, Calkin T, Stewart C, Robinson N, Mullen AD, Meister MR, Hurwitz BC, Quartini E, Dichek DJG, Spears A, Schmidt BE.   +15 more
europepmc   +1 more source

Assessing future ice shelf hydrofracture vulnerability in the ISMIP6 ensemble

Journal of Glaciology
Understanding the possibility of future ice shelf collapses similar to that of the Larsen B is critical for improving sea-level-rise projections due to the restraint on upstream flow that ice shelves provide.
Benjamin Reynolds, Sophie Nowicki
doaj   +1 more source

Heterogeneous melting near the Thwaites Glacier grounding line. [PDF]

Nature, 2023
Schmidt BE, Washam P, Davis PED, Nicholls KW, Holland DM, Lawrence JD, Riverman KL, Smith JA, Spears A, Dichek DJG, Mullen AD, Clyne E, Yeager B, Anker P, Meister MR, Hurwitz BC, Quartini ES, Bryson FE, Basinski-Ferris A, Thomas C, Wake J, Vaughan DG, Anandakrishnan S, Rignot E, Paden J, Makinson K.   +25 more
europepmc   +1 more source

Glacier processes from seismic recordings on Sørsdal Glacier, East Antarctica

Journal of Glaciology
A catalogue of seismic events is produced and analysed for Sørsdal Glacier, East Antarctica. Recordings were made using an irregular array of three broadband and eight short-period seismometers, with approximately 3 km aperture, deployed slightly ...
Jared C Magyar, Anya M Reading, Ross J Turner, Sue Cook, Bernd Kulessa, Sarah S. Thompson, Ian D Kelly, Christian Schoof   +7 more
doaj   +1 more source