Simulated retreat of Jakobshavn Isbræ since the Little Ice Age controlled by geometry
نویسندگان
چکیده
منابع مشابه
Varve and radiocarbon dating support the rapid advance of Jakobshavn Isbr during the Little Ice Age
Large outlet glaciers draining the Greenland Ice Sheet significantly influence overall ice sheet mass balance. Considerable short term (years to decades) retreat and fluctuations in velocity of Jakobshavn Isbræ, western Greenland, illustrate the complex nature by which large outlet glaciers respond to climate change, making predictions of future ice sheet change challenging. To provide a longer...
متن کاملRapid viscoelastic uplift in southeast Alaska caused by post-Little Ice Age glacial retreat
Our observations show that extreme uplift in southeast Alaska began about 1770 AD, with relative sea level (RSL) change to 5.7 m and current uplift rates to 32 mm/yr. This region experienced widespread glacial melting following the Little Ice Age (LIA), with the collapse of the Glacier Bay Icefield alone equivalent to 8 mm of global sea level rise. Geodynamic modelling links the uplift to post-...
متن کاملIce mélange dynamics and implications for terminus stability, Jakobshavn Isbræ, Greenland
[1] We used time-lapse imagery, seismic and audio recordings, iceberg and glacier velocities, ocean wave measurements, and simple theoretical considerations to investigate the interactions between Jakobshavn Isbræ and its proglacial ice mélange. The mélange behaves as a weak, granular ice shelf whose rheology varies seasonally. Sea ice growth in winter stiffens the mélange matrix by binding ice...
متن کاملUsing proglacial-threshold lakes to constrain fluctuations of the Jakobshavn Isbræ ice margin, western Greenland, during the Holocene
The future response of the Greenland Ice Sheet (GIS) and its potential contribution to sea level rise are uncertain. Rapid changes of Greenland’s outlet glaciers over the past decade have made it difficult to extrapolate ice sheet change into the future. This significant short-term variability highlights the need for longer-term, geologic (e.g., Holocene) records of ice margin fluctuations. How...
متن کاملLittle Ice Age
Volume 1, The Earth system: physical and chemical dimensions of global environmental change, pp 504–509
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ژورنال
عنوان ژورنال: The Cryosphere
سال: 2018
ISSN: 1994-0424
DOI: 10.5194/tc-12-2249-2018