Results 41 to 50 of about 1,622 (202)

Modeling Antarctic subglacial lake filling and drainage cycles [PDF]

The Cryosphere, 2016
The growth and drainage of active subglacial lakes in Antarctica has previously been inferred from analysis of ice surface altimetry data. We use a subglacial hydrology model applied to a synthetic Antarctic ice stream to examine internal controls on the
C. F. Dow, M. A. Werder, S. Nowicki, R. T. Walker   +3 more
doaj   +1 more source

Incorporation of particulates into accreted ice above subglacial Vostok lake, Antarctica [PDF]

, 2005
The nature of microscopic particulates in meteoric and accreted ice from the Vostok (Antarctica) ice core is assessed in conjunction with existing ice-core data to investigate the mechanism by which particulates are incorporated into refrozen lake water.
Priscu, JC, Royston-Bishop, G, Siegert, MJ, Tranter, M, Christner, BC, Lee, V, Christner, B., Priscu, J. C., Siegert, M. J., Royston-Bishop, G., Tranter, M., Lee, V.   +11 more
core   +1 more source

A temperate former West Antarctic ice sheet suggested by an extensive zone of bed channels [PDF]

, 2014
We present radio-echo sounding data and satellite imagery, revealing a series of ancient large sub-parallel subglacial channels preserved in the region between the Möller and Foundation Ice Streams, West Antarctica.
Martin J. Siegert, Tom A. Jordan, Rippin, David M., Jordan, Tom A., Ross, N, Siegert, MJ, Corr, HFJ, Siegert, Martin J., Rippin, DM, Le Brocq, Anne, Hugh F.J. Corr, Jordan, TA, Kathryn C. Rose, Le Brocq, Anne M., Rose, Kathryn C., Bingham, RG, Le Brocq, AM, Anne M. Le Brocq, Ross, Neil, Fausto Ferraccioli, Rose, KC, Ferraccioli, F, Ferraccioli, Fausto, Corr, Hugh F.J., Robert G. Bingham, Neil Ross, David M. Rippin, Bingham, Robert G.   +27 more
core   +1 more source

(Table 1) Ice thickness of new subglacial lakes identified in the ICECAP RES data and of previously known subglacial lakes [PDF]

, 2012
Subglacial hydrology in East Antarctica is poorly understood, yet may be critical to the manner in which ice flows. Data from a new regional airborne geophysical survey (ICECAP) have transformed our understanding of the topography and glaciology ...
Wright, Andrew P, Andrew P Wright (8010812)   +1 more
core   +1 more source

Analysis of long-term dynamic changes of subglacial lakes in the Recovery Ice Stream, Antarctica [PDF]

The Cryosphere
The dynamic activity of subglacial lakes plays a crucial role in modulating glacial processes and the mass balance of the Antarctic ice sheet. The Recovery Ice Stream (RIS), projected to experience significant mass loss in East Antarctica during coming ...
T. Feng, T. Feng, H. Dong, H. Dong, Y. Chen, Y. Chen, T. Hao, T. Hao   +7 more
doaj   +1 more source

Evidence of active subglacial lakes under a slowly moving coastal region of the Antarctic Ice Sheet [PDF]

The Cryosphere
Active subglacial lakes beneath the Antarctic Ice Sheet provide insights into the dynamic subglacial environment, with implications for ice-sheet dynamics and mass balance.
J. F. Arthur, C. Shackleton, G. Moholdt, K. Matsuoka, J. van Oostveen   +4 more
doaj   +1 more source

cryotools/subglacial-overdeepenings: An inventory of future glacial lakes in High Mountain Asia in shapefile format, v1.0 [PDF]

, 2020
An inventory of future glacial lakes in High Mountain Asia including mass movement impact hazard assessments to anticipate emerging threats. This dataset comprises two shapefiles: a subset of all subglacial overdeepenings with a surface area >105 m2 ...
David Loibl, Wilhelm Furian
core   +1 more source

Drainage networks, lakes and water fluxes beneath the Antarctic ice sheet

Annals of Glaciology, 2016
Antarctica Bedmap2 datasets are used to calculate subglacial hydraulic potential and the area, depth and volume of hydraulic potential sinks. There are over 32 000 contiguous sinks, which can be thought of as predicted lakes.
Ian C. Willis, Ed L. Pope, Gwendolyn J.-M.C. Leysinger Vieli, Neil S. Arnold, Sylvan Long   +4 more
doaj   +1 more source

The influence of a model subglacial lake on ice dynamics and internal layering [PDF]

The Cryosphere, 2016
As ice flows over a subglacial lake, the drop in bed resistance leads to an increase in ice velocities and a draw down of isochrones and cold ice. The ice surface flattens as it adjusts to the lack of resisting forces at the base. The rapid transition in
E. Gudlaugsson, A. Humbert, T. Kleiner, J. Kohler, K. Andreassen   +4 more
doaj   +1 more source

Clean access, measurement, and sampling of Ellsworth Subglacial Lake: A method for exploring deep Antarctic subglacial lake environments [PDF]

Reviews of Geophysics, 2012
Antarctic subglacial lakes are thought to be extreme habitats for microbial life and may contain important records of ice sheet history and climate change within their lake floor sediments. To find whether or not this is true, and to answer the science questions that would follow, direct measurement and sampling of these environments are required. Ever
Siegert, Martin J., Clarke, Rachel J., Mowlem, Matt, Ross, Neil, Hill, Christopher S., Tait, Andrew, Hodgson, Dominic, Parnell, John, Tranter, Martyn, Pearce, David, Bentley, Michael J., Cockell, Charles, Tsaloglou, Maria-Nefeli, Smith, Andy, Woodward, John, Brito, Mario P., Waugh, Ed   +16 more
openaire   +4 more sources