Results 91 to 100 of about 912 (179)

Calving as a Source of Acute and Persistent Kinetic Energy to Enhance Submarine Melting of Tidewater Glaciers

Geophysical Research Letters
Calving icebergs at tidewater glaciers release large amounts of potential energy. This energy—in principle—could be a source for submarine melting, which scales with near‐terminus water temperature and velocity.
M. F. Shaya, J. D. Nash, E. C. Pettit, J. M. Amundson, R. H. Jackson, D. A. Sutherland, D. Winters   +6 more
doaj   +1 more source

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

Journal 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, JAN ÅSTRÖM, THOMAS ZWINGER, JOE TODD, FAEZEH M. NICK, SUSAN COOK, NICHOLAS R. J. HULTON, ADRIAN LUCKMAN   +7 more
doaj   +1 more source

A Novel Approach to Automated Mapping Subweekly Calving Front of Petermann Glacier (2016–2023)—Using Sentinel-2 Satellite Data and Segment Anything Model (SAM)

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Monitoring glacier calving fronts is critical for understanding ice dynamics and their response to climate change. However, existing methods of mapping ice calving front face limitations in temporal resolution and positional accuracy, hindering effective
Daan Li, Liming Jiang, Shun Cai, Ronggang Huang, Xi Lu   +4 more
doaj   +1 more source

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

Journal 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, EVGENY A. PODOLSKIY, SHIN SUGIYAMA, DAIKI SAKAKIBARA, PEDRO SKVARCA   +4 more
doaj   +1 more source

Insights From Two Decades of Seismicity at Columbia Glacier

Geophysical Research Letters
We use Columbia Glacier as a case study to demonstrate how seismically cataloged calving events in Alaska can track glacier evolution over two decades. By combining this catalog—a serendipitous byproduct of earthquake monitoring—with terminus positions ...
Sebin John, Michael E. West, Martin Truffer   +2 more
doaj   +1 more source

Ice Front and Mélange Dynamics at Kangerlussuaq Glacier, Eastern Greenland, Since 1981, and Future Stability

Geophysical Research Letters
Calving is a critical factor in the dynamics of marine‐terminating glaciers, yet its long‐term behavior remains poorly understood. Existing models calibrate calving parameters with decadal observational periods and assume they remain constant ...
E. Y. H. Lippert, M. Morlighem, G. Cheng, D. L. Berg, J. Hassan, S. A. Khan   +5 more
doaj   +1 more source

Horizontal force-balance calving laws: Ice shelves, marine- and land-terminating glaciers

Journal of Glaciology
Predicting calving in glacier models is challenging, as observations of diverse calving styles appear to contradict a universal calving law. Here, we generalize and apply the analytical Horizontal Force-Balance fracture model from ice shelves to land ...
Niall Bennet Coffey, Ching-Yao Lai
doaj   +1 more source

Sequence of events that led to the South Lhonak lake outburst flood in Sikkim, India. [PDF]

Sci Rep
Mohanty LK, Gantayat P, Dixit A, Das Adhikari M, Biswas R, Singh VK.   +5 more
europepmc   +1 more source

Dynamics of calving glaciers: comparison of three models

Journal of Glaciology, 2006
A minimal model of a tidewater glacier based solely on mass conservation is compared with two one-dimensional numerical flowline models, one with the calving rate proportional to water depth, and the other with the flotation criterion as a boundary condition at the glacier terminus.
Nick, F.M., Oerlemans, J.
openaire   +2 more sources

Ice-marginal proglacial lakes enhance outlet glacier velocities across Greenland. [PDF]

Commun Earth Environ
Harpur CM, Smith MW, Carrivick JL, Quincey DJ, Taylor L.   +4 more
europepmc   +1 more source