Results 61 to 70 of about 51,075 (190)
On 26 September 2019, a massive iceberg broke off the west side of the Amery Ice Shelf (AIS) in East Antarctica. Since 1973, the AIS calving front has steadily advanced at a rate of 1.0 km yr−1. However, the advancement rate of the central portion of the
Zhaohui Chi, Andrew Klein
doaj +1 more source
Abstract Dense water formation in the Southern Ocean plays a key role in the global ocean overturning circulation, affecting the distribution of heat, carbon, oxygen, and nutrients. Fast ice stays immobile while blocking sea ice flow, favoring the opening of coastal polynyas, where intense air‐sea exchanges drive sea ice production and ocean ...
N. Pirlet +4 more
wiley +1 more source
Reassessing the Role of the Antarctic Slope Current in Poleward Ocean Heat Transport
Abstract The Antarctic Slope Current (ASC) is often considered a barrier to the poleward transport of Circumpolar Deep Water (CDW), yet its vast extent has hindered circumpolar analysis of this relationship. Here, we use a high‐resolution global ocean‐sea ice model that resolves the slope current to assess the link between variability in the ASC and ...
Wilton Aguiar +7 more
wiley +1 more source
Calving giant icebergs: old principles, new applications
Earth-orbiting satellites can now monitor calving of large icebergs from ice shelves bordering the marine West Antarctic Ice Sheet, and recent calving events have stimulated interest in calving mechanisms. To advance this interest pioneering work in brittle and ductile fracture mechanics is reviewed, leading to a new application to calving of giant ...
Kenneally, James P., Huges, Terence J.
openaire +3 more sources
The life cycle of small- to medium-sized icebergs in the Amundsen Sea Embayment
An object-based method for automatic iceberg detection has been applied to Advanced Synthetic Aperture Radar images in the Amundsen Sea Embayment (ASE), Antarctica.
Aleksandra K. Mazur +2 more
doaj +1 more source
Baffin Bay Freshwater Content Seasonal Variability and Budget: A Modeling Approach
Abstract Baffin Bay plays a significant role as an exporter of freshwater from the Arctic to the North Atlantic. However, we still do not completely understand how this freshwater is stored and transformed within the bay before it exits. Here, we use a six‐member ensemble built using the Nucleus for European Modelling of the Ocean (NEMO)—at 1/4 ...
L. H. Oliveira da Silva +2 more
wiley +1 more source
New Technique Reveals Iceberg Calving Process
Researchers used unmanned aerial vehicle data to model the growth of a fracture that broke a 1-kilometer-long iceberg off a Greenland glacier.
openaire +1 more source
Combining SAR images with an iceberg drift model for improving mass loss estimations caused by iceberg calving - a case study [PDF]
Recent estimations of mass loss caused by iceberg calving are limited to huge icebergs (>18.5km edge length) or are spatially limited. Since the 1970s, the course of huge icebergs is permanently tracked using satellite images by the National Ice Center ...
Rackow, Thomas +2 more
core +1 more source
Abstract Iceberg calving driven by crevasse propagation is an important source of ice loss from the Greenland and Antarctic ice sheets. However, simulating crevasse growth and interaction in 3D, spanning meters to kilometers length scales, remains computationally challenging for high‐fidelity models based on nonlocal continuum damage mechanics and ...
Abhinav Gupta +4 more
wiley +1 more source
Three-dimensional modelling of calving processes on Johnsons Glacier, Livingston Island, Antarctica. [PDF]
Iceberg calving is an important mass loss mechanism from ice shelves and tidewater glaciers for many mid and high-latitude glaciers and ice caps, yet the process is not well represented in prognostic models of ice dynamics.
Martin, Carlos +4 more
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