Results 31 to 40 of about 70,309 (180)

Repeat Subglacial Lake Drainage and Filling Beneath Thwaites Glacier [PDF]

Geophysical Research Letters, 2020
AbstractActive subglacial lakes have been identified throughout Antarctica, offering a window into subglacial environments and their impact on ice sheet mass balance. Here we use high‐resolution altimetry measurements from 2010 to 2019 to show that a lake system under the Thwaites Glacier undertook a large episode of activity in 2017, only four years ...
G. Malczyk, N. Gourmelen, D. Goldberg, J. Wuite, T. Nagler   +4 more
openaire   +2 more sources

New gravity-derived bathymetry for the Thwaites, Crosson, and Dotson ice shelves revealing two ice shelf populations [PDF]

The Cryosphere, 2020
Ice shelves play a critical role in the long-term stability of ice sheets through their buttressing effect. The underlying bathymetry and cavity thickness are key inputs for modelling future ice sheet evolution.
T. A. Jordan, D. Porter, K. Tinto, R. Millan, A. Muto, K. Hogan, R. D. Larter, A. G. C. Graham, J. D. Paden   +8 more
doaj   +1 more source

Seismicity and Pn Velocity Structure of Central West Antarctica

Geochemistry, Geophysics, Geosystems, 2021
We have located 117 previously undetected seismic events mainly occurring between 2015 and 2017 that originated from glacial, tectonic, and volcanic processes in central West Antarctica using data recorded on Polar Earth Observing Network (POLENET/ANET ...
Erica M. Lucas, Andrew A. Nyblade, Andrew J. Lloyd, Richard C. Aster, Douglas A. Wiens, John Paul O'Donnell, Graham W. Stuart, Terry J. Wilson, Ian W. D. Dalziel, J. Paul Winberry, Audrey D. Huerta   +10 more
doaj   +1 more source

Dynamic (in)stability of Thwaites Glacier, West Antarctica [PDF]

Journal of Geophysical Research: Earth Surface, 2013
Thwaites Glacier, West Antarctica, has the potential to directly contribute ∼1 m to sea level and currently is losing mass and thinning rapidly. Here, we report on regional results for the Sea‐level Response to Ice Sheet Evolution (SeaRISE) experiments and investigate the impact of i) spatial resolution within existing data sets, ii) grounding‐zone ...
B. R. Parizek, K. Christianson, S. Anandakrishnan, R. B. Alley, R. T. Walker, R. A. Edwards, D. S. Wolfe, G. T. Bertini, S. K. Rinehart, R. A. Bindschadler, S. M. J. Nowicki   +10 more
openaire   +1 more source

Model setup for simulations of melting beneath Thwaites Glacier

, 2023
Model parameter and forcing files needed to simulate the ocean beneath Thwaites Glacier during the period 2011-2022 as described in the paper "Strong ocean melting feedback during the recent retreat of Thwaites Glacier" in Geophysical Research Letters by
Paul Holland, Suzanne Bevan, Adrian Luckman   +2 more
core   +2 more sources

Constraining the recent mass balance of Pine Island and Thwaites glaciers, West Antarctica, with airborne observations of snow accumulation [PDF]

The Cryosphere, 2014
In Antarctica, uncertainties in mass input and output translate directly into uncertainty in glacier mass balance and thus in sea level impact. While remotely sensed observations of ice velocity and thickness over the major outlet glaciers have improved ...
B. Medley, I. Joughin, B. E. Smith, S. B. Das, E. J. Steig, H. Conway, S. Gogineni, C. Lewis, A. S. Criscitiello, J. R. McConnell, M. R. van den Broeke, J. T. M. Lenaerts, D. H. Bromwich, J. P. Nicolas, C. Leuschen   +14 more
doaj   +1 more source

Increased rate of acceleration on Pine Island Glacier strongly coupled to changes in gravitational driving stress [PDF]

, 2009
Pine Island Glacier, Antarctica, has been undergoing several related changes for at least two decades; these include acceleration, thinning and grounding line retreat.
Scott, J. B. T., Vaughan, D G, Bingham, R. G., R. G. Bingham, Pritchard, H.D., Vaughan, D. G., Bingham, R.G., Pritchard, Hamish D., Scott, J.B.T., Smith, A. M., Vaughan, D.G., Pritchard, H. D., J. B. T. Scott, Gudmundsson, G H, Smith, A M, Pritchard, H D, Smith, A.M., Gudmundsson, G.H., D. G. Vaughan, Vaughan, David G., G. H. Gudmundsson, Scott, J B T, H. D. Pritchard, Bingham, R G, Gudmundsson, G. H., Gudmundsson, Hilmar, A. M. Smith, Bingham, Robert G.   +27 more
core   +2 more sources

Insights into the vulnerability of Antarctic glaciers from the ISMIP6 ice sheet model ensemble and associated uncertainty [PDF]

The Cryosphere, 2023
The Antarctic Ice Sheet represents the largest source of uncertainty in future sea level rise projections, with a contribution to sea level by 2100 ranging from −5 to 43 cm of sea level equivalent under high carbon emission scenarios estimated by the ...
H. Seroussi, V. Verjans, S. Nowicki, A. J. Payne, H. Goelzer, W. H. Lipscomb, A. Abe-Ouchi, C. Agosta, T. Albrecht, X. Asay-Davis, A. Barthel, R. Calov, R. Cullather, C. Dumas, B. K. Galton-Fenzi, B. K. Galton-Fenzi, B. K. Galton-Fenzi, R. Gladstone, N. R. Golledge, J. M. Gregory, J. M. Gregory, R. Greve, R. Greve, T. Hattermann, M. J. Hoffman, A. Humbert, A. Humbert, P. Huybrechts, N. C. Jourdain, T. Kleiner, E. Larour, G. R. Leguy, D. P. Lowry, C. M. Little, M. Morlighem, F. Pattyn, T. Pelle, S. F. Price, A. Quiquet, A. Quiquet, R. Reese, R. Reese, N.-J. Schlegel, N.-J. Schlegel, A. Shepherd, E. Simon, R. S. Smith, F. Straneo, S. Sun, L. D. Trusel, J. Van Breedam, P. Van Katwyk, R. S. W. van de Wal, R. S. W. van de Wal, R. Winkelmann, R. Winkelmann, C. Zhao, T. Zhang, T. Zwinger   +58 more
doaj   +1 more source

Damage intensity increases ice mass loss from Thwaites Glacier, Antarctica [PDF]

The Cryosphere
Ice damage, which results from the formation and development of crevasses on glaciers, plays a critical role in ice-shelf stability, grounding-line retreat, and subsequent sea-level rise. Yet, few ice-sheet models explicitly account for ice damage or its
Y. Li, V. Coulon, J. Blasco, G. Qiao, Q. Yang, F. Pattyn   +5 more
doaj   +1 more source

Inverting ice surface elevation and velocity for bed topography and slipperiness beneath Thwaites Glacier [PDF]

The Cryosphere, 2022
There is significant uncertainty over how ice sheets and glaciers will respond to rising global temperatures. Limited knowledge of the topography and rheology of the ice–bed interface is a key cause of this uncertainty as models show that small changes ...
H. Ockenden, R. G. Bingham, A. Curtis, D. Goldberg   +3 more
doaj   +1 more source