Results 31 to 40 of about 24,049 (264)

Residence Time and Transformation of Warm Circumpolar Deep Water on the Antarctic Continental Shelf

Geophysical Research Letters, 2021
Inflow of warm modified Circumpolar Deep Water (CDW) onto the Antarctic continental shelf and into ice shelf cavities is a key driver of Antarctic ice shelf mass loss.
V. Tamsitt, M. H. England, S. R. Rintoul, A. K. Morrison   +3 more
doaj   +1 more source

Marine ice in Larsen Ice Shelf [PDF]

Geophysical Research Letters, 2009
It is argued that Larsen Ice Shelf contains marine ice formed by oceanic freezing and other mechanisms. Missing basal returns in airborne radar soundings and observations of a smooth and healed surface coincide downstream of regions where an ocean model predicts freezing.
Holland, Paul, Corr, Hugh, Vaughan, David, Jenkins, Adrian, Skvarca, Pedro   +4 more
openaire   +3 more sources

Ice‐Front Retreat Controls on Ocean Dynamics Under Larsen C Ice Shelf, Antarctica

Geophysical Research Letters, 2023
Iceberg A‐68 separated from the Larsen C Ice Shelf in July 2017 and the impact of this event on the local ocean circulation has yet to be assessed.
M. Poinelli, Y. Nakayama, E. Larour, M. Vizcaino, R. Riva   +4 more
doaj   +1 more source

The DOE E3SM v1.2 Cryosphere Configuration: Description and Simulated Antarctic Ice‐Shelf Basal Melting

Journal of Advances in Modeling Earth Systems, 2022
The processes responsible for freshwater flux from the Antarctic Ice Sheet (AIS), ice‐shelf basal melting and iceberg calving, are generally poorly represented in current Earth System Models (ESMs).
Darin Comeau, Xylar S. Asay‐Davis, Carolyn Branecky Begeman, Matthew J. Hoffman, Wuyin Lin, Mark R. Petersen, Stephen F. Price, Andrew F. Roberts, Luke P. Van Roekel, Milena Veneziani, Jonathan D. Wolfe, Jeremy G. Fyke, Todd D. Ringler, Adrian K. Turner   +13 more
doaj   +1 more source

Simulating ice-shelf extent using damage mechanics

Journal of Glaciology, 2022
Inaccurate representations of iceberg calving from ice shelves are a large source of uncertainty in mass-loss projections from the Antarctic ice sheet. Here, we address this limitation by implementing and testing a continuum damage-mechanics model in a ...
Samuel B. Kachuck, Morgan Whitcomb, Jeremy N. Bassis, Daniel F. Martin, Stephen F. Price   +4 more
doaj   +1 more source

Getz Ice Shelf melt enhanced by freshwater discharge from beneath the West Antarctic Ice Sheet [PDF]

The Cryosphere, 2020
Antarctica's Getz Ice Shelf has been rapidly thinning in recent years, producing more meltwater than any other ice shelf in the world. The influx of fresh water is known to substantially influence ocean circulation and biological productivity, but ...
W. Wei, D. D. Blankenship, J. S. Greenbaum, N. Gourmelen, C. F. Dow, T. G. Richter, C. A. Greene, D. A. Young, S. Lee, T.-W. Kim, W. S. Lee, K. M. Assmann, K. M. Assmann   +12 more
doaj   +1 more source

Ephemeral grounding on the Pine Island Ice Shelf, West Antarctica, from 2014–2023 [PDF]

The Cryosphere
Ephemeral grounding refers to the intermittent contact between an ice shelf and elevated seafloor features. The evolution of ephemeral grounding of an ice shelf can affect buttressing, alter ice flow dynamics, and influence ice shelf stability. Long-term
Y. Chien, Y. Chien, Y. Chien, C. Zhou, C. Zhou, C. Zhou, S. Sun, Y. Chen, Y. Chen, Y. Chen, T. Wang, T. Wang, T. Wang, B. Zhang, B. Zhang, B. Zhang   +15 more
doaj   +1 more source

Ice Velocity Variations of the Cook Ice Shelf, East Antarctica, from 2017 to 2022 from Sentinel-1 SAR Time-Series Offset Tracking

Remote Sensing, 2023
The Cook Glacier drains a significant portion of the Wilkes Subglacial Basin, the largest subglacial basin in East Antarctica—which feeds the Cook Ice Shelf.
Siung Lee, Seohyeon Kim, Hyunjun An, Hyangsun Han   +3 more
doaj   +1 more source

Effects of calving and submarine melting on steady states and stability of buttressed marine ice sheets

Journal of Glaciology, 2022
Mass loss from ice shelves is a strong control on grounding-line dynamics. Here we investigate how calving and submarine melt parameterizations affect steady-state grounding-line positions and their stability.
Marianne Haseloff, Olga V. Sergienko
doaj   +1 more source

Diagnosing the sensitivity of grounding-line flux to changes in sub-ice-shelf melting [PDF]

The Cryosphere, 2020
Using a numerical ice flow model, we study changes in ice shelf buttressing and grounding-line flux due to localized ice thickness perturbations, a proxy for localized changes in sub-ice-shelf melting. From our experiments, applied to idealized (MISMIP+)
T. Zhang, S. F. Price, M. J. Hoffman, M. Perego, X. Asay-Davis   +4 more
doaj   +1 more source