Results 31 to 40 of about 9,444 (183)

The future is Nye: an extension of the perfect plastic approximation to tidewater glaciers

open access: yesJournal of Glaciology, 2016
Accurate modeling of calving glaciers relies on knowledge of many processes (ice flow, surface/submarine melting, calving, mélange interaction) and glacier-specific factors (air temperature, ocean circulation, precipitation rate, glacier geometry) that ...
LIZZ ULTEE, JEREMY BASSIS
doaj   +1 more source

Regional passive seismic monitoring reveals dynamic glacier activity on Spitsbergen, Svalbard [PDF]

open access: yesPolar Research, 2015
Dynamic glacier activity is increasingly observed through passive seismic monitoring. We analysed near-regional-scale seismicity on the Arctic archipelago of Svalbard to identify seismic icequake signals and to study their spatial–temporal distribution ...
Andreas Köhler   +4 more
doaj   +1 more source

CALVING DYNAMICS DERIVED FROM SATELLITE SAR DATA IN SUPPORT OF MASS BALANCE ESTIMATIONS IN LANGE GLACIER, ANTARCTICA [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
We present calving flux, calving rate, frontal retreat and volume change rate results in Lange Glacier from 2015 to 2017, including also velocity calculations in 2015, 2017 and 2018.
E. Johnson   +7 more
doaj   +1 more source

Calving controlled by melt-under-cutting: detailed calving styles revealed through time-lapse observations

open access: yesAnnals of Glaciology, 2019
We present a highly detailed study of calving dynamics at Tunabreen, a tidewater glacier in Svalbard. A time-lapse camera was trained on the terminus and programmed to capture images every 3 seconds over a 28-hour period in August 2015, producing a ...
Penelope How   +8 more
doaj   +1 more source

Meltwater Intrusions Reveal Mechanisms for Rapid Submarine Melt at a Tidewater Glacier [PDF]

open access: yes, 2019
Submarine melting has been implicated as a driver of glacier retreat and sea level rise, but to date melting has been difficult to observe and quantify. As a result, melt rates have been estimated from parameterizations that are largely unconstrained by ...
Amundson, Jason M.   +8 more
core   +1 more source

Asynchronous glacier dynamics during the Antarctic Cold Reversal in central Patagonia [PDF]

open access: yes, 2018
We present 14 new 10Be cosmogenic nuclide exposure ages quantifying asynchronous readvances during the Antarctic Cold Reversal from glaciers in the Baker Valley region of central Patagonia.
Davies, B.J.   +3 more
core   +1 more source

Assessment of glacial-earthquake source parameters

open access: yesJournal of Glaciology, 2017
Glacial earthquakes are slow earthquakes of magnitude M~5 associated with major calving events at near-grounded marine-terminating glaciers. These globally detectable earthquakes provide information on the grounding state of outlet glaciers and the ...
STEPHEN A. VEITCH, MEREDITH NETTLES
doaj   +1 more source

Are seasonal calving dynamics forced by buttressing from ice mélange or undercutting by melting? Outcomes from full-Stokes simulations of Store Glacier, West Greenland [PDF]

open access: yesThe Cryosphere, 2014
We use a full-Stokes 2-D model (Elmer/Ice) to investigate the flow and calving dynamics of Store Glacier, a fast-flowing outlet glacier in West Greenland.
J. Todd, P. Christoffersen
doaj   +1 more source

Intermittent structural weakening and acceleration of the Thwaites Glacier Tongue between 2000 and 2018 [PDF]

open access: yes, 2020
Evolving conditions at the terminus of Thwaites Glacier will be important in determining the rate of its future sea-level contribution over the coming decades.
Gudmundsson, Hilmar   +5 more
core   +6 more sources

Glacier dynamics near the calving front of Bowdoin Glacier, northwestern Greenland [PDF]

open access: yes, 2015
To better understand recent rapid recession of marine-terminating glaciers in Greenland, we performed satellite and field observations near the calving front of Bowdoin Glacier, a 3 km wide outlet glacier in northwestern Greenland.
Daiki Sakakibara   +5 more
core   +1 more source

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