Results 51 to 60 of about 5,356 (213)

Parameterization for subgrid-scale motion of ice-shelf calving fronts [PDF]

The Cryosphere, 2010
Abstract. A parameterization for the motion of ice-shelf fronts on a Cartesian grid in finite-difference land-ice models is presented. The scheme prevents artificial thinning of the ice shelf at its edge, which occurs due to the finite resolution of the model.
Albrecht, T., Martin, M., Haseloff, M., Winkelmann, R., Levermann, A.   +4 more
openaire   +6 more sources

Response of a marine-terminating Greenland outlet glacier to abrupt cooling 8200 and 9300 years ago [PDF]

, 2011
Long-term records of Greenland outlet-glacier change extending beyond the satellite era can inform future predictions of Greenland Ice Sheet behavior. Of particular relevance is elucidating the Greenland Ice Sheet's response to decadal- and centennial ...
Greg S. Babonis, Nicolás E. Young, Babonis, G.S., Robert C. Finkel, Rood, D.H., Csatho, B., Beata Csatho, Young, N.E., Axford, Y., Briner, J.P., Dylan H. Rood, Jason P. Briner, Yarrow Axford, Finkel, R.C.   +13 more
core   +1 more source

Calving driven by horizontal forces in a revised crevasse-depth framework [PDF]

The Cryosphere
Calving is a key process for the future of our ice sheets and oceans, but representing it in models remains challenging. Among numerous possible calving parameterisations, the crevasse-depth law remains attractive for its clear physical interpretation ...
D. A. Slater, T. J. W. Wagner
doaj   +1 more source

Crevasses triggered on Pine Island Glacier by drilling through an exceptional melt layer [PDF]

, 2010
The basic theory of crevasse formation suggests that crevasses initiate at or near the surface. However, due to variations in stress with depth, it has been suggested that it is possible for crevasses to initiate at depths of 10–30m.
Julian B. T. Scott, Vaughan, David, Scott, Julian B.T., Robert G. Bingham, Andrew M. Smith, Smith, Andrew, Smith, Andrew M., Bingham, Robert, Vaughan, David G., Scott, Julian, Bingham, Robert G., David G. Vaughan   +11 more
core   +1 more source

Marine ice-cliff instability modeling shows mixed-mode ice-cliff failure and yields calving rate parameterization [PDF]

, 2021
This work is from the DOMINOS project, a component of the International Thwaites Glacier Collaboration (ITGC). DOMINOS is supported by the Natural Environment Research Council (NERC: Grant NE/S006605/1). This article represents ITGC Contribution No. ITGC-
Crawford, Anna J, Crawford, Anna J., Åström, Jan A, Bassis, Jeremy N., Crawford, Anna, Benn, Douglas I., Zwinger, Thomas, Benn, Douglas I, Åström, Jan A., Todd, Joe, Bassis, Jeremy, Åström, Jan, Bassis, Jeremy N   +12 more
core   +1 more source

Thinning sea ice weakens buttressing force of iceberg mélange and promotes calving

Nature Communications, 2017
Observed sea-ice loss near ice sheets has, in many cases, been accompanied by accelerated iceberg calving. Here, using a new model, the authors show that iceberg calving from glaciers can be suppressed by a mélange of sea ice and icebergs, with an ...
Alexander A. Robel
doaj   +1 more source

Ice sheet extent and early deglacial history of the southwestern sector of the Greenland ice sheet [PDF]

, 2009
The offshore and coastal geomorphology of southwest Greenland records evidence for the advance and decay of the Greenland Ice Sheet during the Last Glacial Maximum.
Xu, S., Davies, Bethan J., Schnabel, C., Xu, Sheng, Sheng, X., Simpson, M.J.R., Simpson., M.J.R, Huybrechts, P., Roberts, David H., Long, A.J., Huybrechts, Philipe, Long, Antony J., Davies, B., Simpson, Matthew J.R., Schnabel, Christoph, Roberts, D.H., Davies, B.J.   +16 more
core   +1 more source

Iceberg calving of Thwaites Glacier, West Antarctica: full-Stokes modeling combined with linear elastic fracture mechanics [PDF]

The Cryosphere, 2017
Thwaites Glacier (TG), West Antarctica, has been losing mass and retreating rapidly in the past few decades. Here, we present a study of its calving dynamics combining a two-dimensional flow-band full-Stokes (FS) model of its viscous flow with linear ...
H. Yu, E. Rignot, E. Rignot, M. Morlighem, H. Seroussi   +4 more
doaj   +1 more source

A high‐altitude thermal infrared method for estimating moose abundance and demography in Rocky Mountain National Park, USA

Wildlife Biology, EarlyView.
Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley   +1 more source

A review of topographic controls on moraine distribution [PDF]

, 2014
Ice-marginal moraines are often used to reconstruct the dimensions of former ice masses, which are then used as proxies for palaeoclimate. This approach relies on the assumption that the distribution of moraines in the modern landscape is an accurate ...
Barr, Iestyn David, Barr, ID, Barr, Iestyn D., Lovell, Harold, Lovell, H   +4 more
core   +1 more source