Results 41 to 50 of about 4,993 (205)

Tracking icebergs with time-lapse photography and sparse optical flow, LeConte Bay, Alaska, 2016–2017 [PDF]

open access: yes, 2019
We present a workflow to track icebergs in proglacial fjords using oblique time-lapse photos and the Lucas-Kanade optical flow algorithm. We employ the workflow at LeConte Bay, Alaska, where we ran five time-lapse cameras between April 2016 and ...
Amundson, Jason M.   +9 more
core   +2 more sources

Historical occurrence of Antarctic icebergs within mercantile shipping routes and the exceptional events of the 1890s

open access: yesJournal of Glaciology, 2023
A major consideration for maritime activity in the Southern Hemisphere is the northern limit of icebergs, or the Southern Ocean Limit Of Known Ice (SOLOKI).
Robert Keith Headland   +2 more
doaj   +1 more source

Calving giant icebergs: old principles, new applications

open access: yesAntarctic Science, 2006
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

Iceberg properties and distributions in three Greenlandic fjords using satellite imagery

open access: yesAnnals of Glaciology, 2017
Icebergs calved from tidewater glaciers represent about one third to one half of the freshwater flux from the Greenland ice sheet to the surrounding ocean. Using multiple satellite datasets, we quantify the first fjord-wide distributions of iceberg sizes
Daniel J. Sulak   +4 more
doaj   +1 more source

Efficient Location and Extraction of the Iceberg Calved Areas of the Antarctic Ice Shelves

open access: yesRemote Sensing, 2020
Continuous, rapid, and precise monitoring of calving events contributes to an in-depth understanding of calving mechanisms, which have the potential to cause significant mass loss from the Antarctic ice sheet.
Mengzhen Qi   +5 more
doaj   +1 more source

Seabed corrugations beneath an Antarctic ice shelf revealed by autonomous underwater vehicle survey: Origin and implications for the history of Pine Island Glacier [PDF]

open access: yes, 2013
Ice shelves are critical features in the debate about West Antarctic ice sheet change and sea level rise, both because they limit ice discharge and because they are sensitive to change in the surrounding ocean.
Dutrieux, Pierre   +7 more
core   +4 more sources

Numerical Modeling Shows Increased Fracturing Due to Melt-Undercutting Prior to Major Calving at Bowdoin Glacier

open access: yesFrontiers in Earth Science, 2020
Projections of future ice sheet mass loss and thus sea level rise rely on the parametrization of iceberg calving in ice sheet models. The interconnection between submarine melt-induced undercutting and calving is still poorly understood, which makes ...
Eef C. H. van Dongen   +5 more
doaj   +1 more source

Sensitivity of a calving glacier to ice–ocean interactions under climate change: new insights from a 3-D full-Stokes model [PDF]

open access: yesThe Cryosphere, 2019
Iceberg calving accounts for between 30 % and 60 % of net mass loss from the Greenland Ice Sheet, which has intensified and is now the single largest contributor to global sea level rise in the cryosphere.
J. Todd   +5 more
doaj   +1 more source

Iceberg calving from the Amery Ice Shelf, East Antarctica [PDF]

open access: yesAnnals of Glaciology, 2002
AbstractWe investigate the iceberg-calving cycle of the Amery Ice Shelf (AIS), East Antarctica, using evidence acquired between 1936 and 2000. The most recent major iceberg-calving event occurred between late 1963 and early 1964, when a large berg totalling about 10 000 km2 in area broke from the ice front.
Helen A. Fricker   +3 more
openaire   +1 more source

Response of Marine‐Terminating Glaciers to Forcing: Time Scales, Sensitivities, Instabilities, and Stochastic Dynamics [PDF]

open access: yes, 2018
Recent observations indicate that many marine‐terminating glaciers in Greenland and Antarctica are currently retreating and thinning, potentially due to long‐term trends in climate forcing.
Haseloff, Marianne   +2 more
core   +2 more sources

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