Results 91 to 100 of about 63,457 (214)

Galerkin Least-Squares Stabilization in Ice Sheet Modeling - Accuracy, Robustness, and Comparison to other Techniques

, 2017
We investigate the accuracy and robustness of one of the most common methods used in glaciology for the discretization of the $\mathfrak{p}$-Stokes equations: equal order finite elements with Galerkin Least-Squares (GLS) stabilization.
Ahlkrona, Josefin, Helanow, Christian
core   +1 more source

Testing Numerical Models of Glacier Flow [PDF]

Journal of Glaciology, 1979
AbstractThe recent glaciological literature contains a number of numerical simulations of ice-mass flow based on the mass conservation equation. Although rather complex ice masses have been modelled, there has been little discussion of the necessary tests for correct response time and amplitudes in the models. The analytical work of J. F.
openaire   +1 more source

Geometry and drainage of a retreating glacier overlying and recharging a karst aquifer, Tsanfleuron-Sanetsch, Swiss Alps

Acta Carsologica, 2010
Alpine glaciers store large amounts of freshwater contributing to groundwater recharge during warmer periods, but the inter­actions between glaciers and aquifers have rarely been inves­tigated in detail.
Vivian Gremaud, Nico Goldscheider
doaj   +1 more source

Rapid submarine ice melting in the grounding zones of ice shelves in West Antarctica. [PDF]

, 2016
Enhanced submarine ice-shelf melting strongly controls ice loss in the Amundsen Sea embayment (ASE) of West Antarctica, but its magnitude is not well known in the critical grounding zones of the ASE's major glaciers.
Khazendar, Ala, Mouginot, Jeremie, Rignot, Eric, Scheuchl, Bernd, Schodlok, Michael P, Schroeder, Dustin M, Seroussi, Helene, Sutterley, Tyler C, Velicogna, Isabella   +8 more
core   +1 more source

Using PlanetScope-derived time-series elevation models and orthophotos to track glacier 3D dynamics in mid-latitude mountain regions

GIScience & Remote Sensing
Assessing glacier surface height changes provides crucial insights into glacier mass loss and the impact of climate variability. Remote sensing images play a vital role in providing data points for monitoring.
Shengxi Gui, Rongjun Qin
doaj   +1 more source

Impact of ocean stratification on submarine melting of a major Greenland outlet glacier [PDF]

, 2011
Submarine melting is an important balance term for tidewater glaciers1,2 and recent observations point to a change in the submarine melt rate as a potential trigger for the widespread acceleration of outlet glaciers in Greenland3-5.
Claudia Cenedese, David Sutherland, Fiammetta Straneo, Gordon Hamilton, Kjetil Vaage, Leigh Stearns, Ruth Curry   +6 more
core   +1 more source

Earthquake‐triggered avalanche altered glacier flow [PDF]

Eos, Transactions American Geophysical Union, 2012
Landslides are common in areas with mountain glaciers and could affect the movement of glaciers. Shugar et al. used satellite radar imagery and numerical modeling to investigate the effects of earthquake‐triggered avalanches on the Black Rapids Glacier in central Alaska. Three avalanches were triggered there by the 2002 magnitude 7.9 Denali earthquake.
openaire   +1 more source

Diverse landscapes beneath Pine Island Glacier influence ice flow

Nature Communications, 2017
Projecting the future retreat and thus global sea level contributions of Antarctica’s Pine Island Glacier is hampered by a poor grasp of what controls flow at the ice base.
Robert G. Bingham, David G. Vaughan, Edward C. King, Damon Davies, Stephen L. Cornford, Andrew M. Smith, Robert J. Arthern, Alex M. Brisbourne, Jan De Rydt, Alastair G. C. Graham, Matteo Spagnolo, Oliver J. Marsh, David E. Shean   +12 more
doaj   +1 more source

Southern Ocean warming: Increase in basal melting and grounded ice loss [PDF]

, 2013
We apply a global finite element sea ice/ice shelf/ocean model (FESOM) to the Antarctic marginal seas to analyze projections of ice shelf basal melting in a warmer climate.
Determann, Jürgen, Hellmer, Hartmut, Timmermann, Ralph   +2 more
core  

Reconstructing Glacier Surge Kinematics Using a Numerical Ice‐Flow Model Applied to the Dusty Glacier, St. Elias Mountains, Canada

Geophysical Research Letters
Long‐term records of the flow patterns and dynamics of surge‐type glaciers improve our understanding of their underlying dynamic processes, and are critical to better resolve their contribution to a changing cryosphere.
Erik M. Young, Gwenn E. Flowers, Hester Jiskoot, H. Daniel Gibson   +3 more
doaj   +1 more source