Results 11 to 20 of about 8,101 (169)
Geophysical Journal International, 2021 SUMMARY Studies of glacial isostatic adjustment (GIA) provide important constraints on the Earth's mantle viscosity. Most GIA models assume Newtonian viscosity through the mantle, but laboratory experimental studies of rock deformation, observational studies of seismic anisotropy, and modelling studies of mantle dynamics show that in the
Kaixuan Kang +3 more
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Effects on post-glacial rebound from the hard rheology in the transition zone [PDF]
Geophysical Journal International, 1992 The effect of an increase of viscosity in the earth-mantle's transition zone between 420 and 670 km on the geophysical signatures induced by postglacial rebound was analyzed using a self-gravitating model consisting of an elastic lithosphere, a three-layer viscoelastic mantle, and an inviscid core.
SPADA, GIORGIO +3 more
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Quasi-static granular flow of ice mélange [PDF]
, 1936 We use Landsat 8 imagery to generate ice mélange velocity fields at Greenland’s three most productive outlet glaciers: Jakobshavn Isbræ, Helheim Glacier, and Kangerdlugssuaq Glacier.
Amundson, Jason M., Burton, J. C.
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Viscous and elastic buoyancy stresses as drivers of ice-shelf calving
Journal of Glaciology, 2020 The Antarctic Ice Sheet loses mass via its ice shelves predominantly through two processes: basal melting and iceberg calving. Iceberg calving is episodic and infrequent, and not well parameterized in ice-sheet models.
Cyrille Mosbeux +3 more
doaj +1 more source
Geochemistry, Geophysics, Geosystems, 2021 Accurate glacial isostatic adjustment (GIA) models are required for correcting measurements of mass change in Antarctica and for improving knowledge of the sub‐surface, especially in areas of large current ice loss such as the Amundsen Sea Embayment (ASE)
B. Blank +4 more
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Development of crystal orientation fabric in the Dome Fuji ice core in East Antarctica: implications for the deformation regime in ice sheets [PDF]
The Cryosphere, 2022 The crystal orientation fabric (COF) of a polar ice sheet has a significant effect on the rheology of the ice sheet. With the aim of better understanding the deformation regime of ice sheets, the work presented here investigates the COF in the upper 80 %
T. Saruya +11 more
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Magnetic anisotropy and debris-dependent rheological heterogeneity within stratified basal ice
Journal of Glaciology, 2019 Basal ice of glaciers and ice sheets frequently contains a well-developed stratification of distinct, semi-continuous, alternating layers of debris-poor and debris-rich ice.
Nathan R. Hopkins +5 more
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Journal of Glaciology, 2018 Ice rheology governs how glaciers flow and respond to environmental change. The rheology of glacier ice evolves in response to a variety of mechanisms, including damage, heating, melting and the development of crystalline fabric.
BRENT M. MINCHEW +4 more
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Modeling of the northern hemisphere ice sheets during the last glacial cycle and glaciological sensitivity [PDF]
, 2005 We present a new three-dimensional thermomechanically coupled ice sheet model of the northern hemisphere to reconstruct the Quaternary ice sheets during the last glacial cycle.
Huybrechts, Philippe, Zweck, C.
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Block Motion Changes in Japan Triggered by the 2011 Great Tohoku Earthquake [PDF]
, 2017 Plate motions are governed by equilibrium between basal and edge forces. Great earthquakes may induce differential static stress changes across tectonic plates, enabling a new equilibrium state.
Loveless, John P., Meade, Brendan J.
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