Results 21 to 30 of about 120,471 (247)

Glacier calving observed with time-lapse imagery and tsunami waves at Glaciar Perito Moreno, Patagonia

open access: yesJournal of Glaciology, 2018
Calving plays a key role in the recent rapid retreat of glaciers around the world. However, many processes related to calving are poorly understood since direct observations are scarce and challenging to obtain.
MASAHIRO MINOWA   +4 more
doaj   +2 more sources

The Chaos Beneath a Glacier’s Calving Front

open access: yesEos, 2021
For the first time, researchers have captured continuous data on the abrupt changes and activities happening at a glacier’s calving front.
Danielle Beurteaux
openaire   +2 more sources

Melt-under-cutting and buoyancy-driven calving from tidewater glaciers: new insights from discrete element and continuum model simulations [PDF]

open access: yesJournal of Glaciology, 2017
The simple calving laws currently used in ice-sheet models do not adequately reflect the complexity and diversity of calving processes. To be effective, calving laws must be grounded in a sound understanding of how calving actually works.
DOUGLAS I. BENN   +7 more
doaj   +6 more sources

Effects of undercutting and sliding on calving: a global approach applied to Kronebreen, Svalbard [PDF]

open access: yesThe Cryosphere, 2018
In this paper, we study the effects of basal friction, sub-aqueous undercutting and glacier geometry on the calving process by combining six different models in an offline-coupled workflow: a continuum–mechanical ice flow model (Elmer/Ice), a climatic
D. Vallot   +10 more
doaj   +5 more sources

A Deep Active Contour Model for Delineating Glacier Calving Fronts [PDF]

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2023
Choosing how to encode a real-world problem as a machine learning task is an important design decision in machine learning. The task of the glacier calving front modeling has often been approached as a semantic segmentation task.
Konrad Heidler   +5 more
semanticscholar   +1 more source

Glacier Calving Front Segmentation Using Attention U-Net [PDF]

open access: yes2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021
An essential climate variable to determine the tidewater glacier status is the location of the calving front position and the separation of seasonal variability from long-term trends.
M. Holzmann   +5 more
semanticscholar   +1 more source

Pixelwise Distance Regression for Glacier Calving Front Detection and Segmentation [PDF]

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2021
Glacier calving front position (CFP) is an important glaciological variable. Traditionally, delineating the CFPs has been carried out manually, which was subjective, tedious, and expensive.
Amirabbas Davari   +5 more
semanticscholar   +1 more source

On Mathews Correlation Coefficient and Improved Distance Map Loss for Automatic Glacier Calving Front Segmentation in SAR Imagery [PDF]

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2021
The vast majority of the outlet glaciers and ice streams of the polar ice sheets end in the ocean. Ice mass loss via calving of the glaciers into the ocean has increased over the last few decades.
Amirabbas Davari   +6 more
semanticscholar   +1 more source

Evaluation of low-cost Raspberry Pi sensors for structure-from-motion reconstructions of glacier calving fronts

open access: yesNatural Hazards and Earth System Sciences, 2023
. Glacier calving fronts are highly dynamic environments that are becoming ubiquitous as glaciers recede and, in many cases, develop proglacial lakes.
Liam S. Taylor   +2 more
semanticscholar   +1 more source

Deriving mass balance and calving variations from reanalysis data and sparse observations, Glaciar San Rafael, northern Patagonia, 1950–2005 [PDF]

open access: yesThe Cryosphere, 2011
Mass balance variations of Glaciar San Rafael, the northernmost tidewater glacier in the Southern Hemisphere, are reconstructed over the period 1950–2005 using NCEP-NCAR reanalysis climate data together with sparse, local historical observations of air ...
M. Koppes   +3 more
doaj   +1 more source

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