Results 41 to 50 of about 2,939 (220)

Subglacial Lake Ellsworth: a candidate for in situ exploration in West Antarctica [PDF]

, 2004
Radio-echo sounding reveals a 10 km-long lake beneath similar to3.4 km of ice near the Ellsworth Mountains in West Antarctica, 20 km from the ice divide. Subglacial Lake Ellsworth is located within a distinct topographic hollow, which is similar to1.5 km
Corr, H., Woodward, J., Payne, AJ, Joughin, I., King, Edward, Smith, Andrew, Siegert, MJ, King, E. C., Smith, A., Siegert, Martin J., Woodward, J, Hindmarsh, RCA, Corr, Hugh, Woodward, John, King, E, Payne, Antony J., Corr, H, King, Edward C., Payne, A. J., Hindmarsh, Richard, Joughin, Ian, Siegert, Martin, Siegert, M. J., Joughin, I, Smith, Andy, Smith, AM, Hindmarsh, R.   +26 more
core   +1 more source

Sediment behavior controls equilibrium width of subglacial channels

Journal of Glaciology, 2017
Flow-frictional resistance at the base of glaciers and ice sheets is strongly linked to subglacial water pressure. Understanding the physical mechanisms that govern meltwater fluxes in subglacial channels is hence critical for constraining variations in ...
ANDERS DAMSGAARD, JENNY SUCKALE, JAN A. PIOTROWSKI, MORGANE HOUSSAIS, MATTHEW R. SIEGFRIED, HELEN A. FRICKER   +5 more
doaj   +1 more source

Penetration of Antarctic subglacial lakes by VHF electromagnetic pulses: Information on the depth and electrical conductivity of basal water bodies [PDF]

, 1999
Owing to the high level of absorption of very high frequency radio waves in water, previous investigators of airborne radio echo sounding (RES) data from Antarctica have assumed that the depth of subglacial lakes cannot be measured directly by this ...
Martin J. Siegert, Siegert, M. J., Michael R. Gorman, Gorman, M. R.   +3 more
core   +1 more source

Short-term variability in Greenland Ice Sheet motion forced by time-varying meltwater inputs: implications for the relationship between subglacial drainage system behavior and ice velocity. [PDF]

, 2012
High resolution measurements of ice motion along a 120 km transect in a land-terminating section of the GrIS reveal short-term velocity variations (<1 day), which are forced by rapid variations in meltwater input to the subglacial drainage system from
Cowton, Thomas, Bartholomew, Ian, Nienow, Peter, Sole, A., Mair, Douglas, Mair, D., Sole, Andrew, King, Matt A., Cowton, T., Bartholomew, I., King, M.A., Nienow, P.   +11 more
core   +1 more source

Preliminary analysis of life within a former subglacial lake sediment in Antarctica [PDF]

, 2013
Since the first descriptions of Antarctic subglacial lakes, there has been a growing interest and awareness of the possibility that life will exist and potentially thrive in these unique and little known environments. The unusual combination of selection
Thorne, Michael A. S., Charles Cockell, Cockell, Charles S., Charles S. Cockell, Michael Thorne, Cockell, Charles, Gavin Burns, Hodgson, Dominic A., Michael A. S. Thorne, Burns, Gavin, Hodgson, Dominic, Pearce, David, Pearce, David A., David Pearce, David A. Pearce, Dominic A. Hodgson, Thorne, Michael, Dominic Hodgson   +17 more
core   +1 more source

Ice stream subglacial access for ice-sheet history and fast ice flow: the BEAMISH Project on Rutford Ice Stream, West Antarctica and initial results on basal conditions

Annals of Glaciology, 2021
Three holes were drilled to the bed of Rutford Ice Stream, through ice up to 2154 m thick, to investigate the basal processes and conditions associated with fast ice flow and the glacial history of the West Antarctic Ice Sheet.
A. M. Smith, P. G. D. Anker, K. W. Nicholls, K. Makinson, T. Murray, S. Rios-Costas, A. M. Brisbourne, D. A. Hodgson, R. Schlegel, S. Anandakrishnan   +9 more
doaj   +1 more source

Influence of subglacial drainage system evolution on glacier surface motion: Haut Glacier d'Arolla, Switzerland [PDF]

, 2002
The relationship between the evolution of subglacial drainage system morphology and spatial patterns of glacier surface velocity was investigated using dye tracing experiments and ground surveying throughout the 1995 melt season at Haut Glacier d'Arolla,
Ian Willis, Sharp, M., Wohlleben, T., Peter Nienow, Mair, D., Martin Sharp, Willis, I., Trudy Wohlleben, Douglas Mair, Nienow, P.   +9 more
core   +1 more source

Hydrological controls on diurnal ice flow variability in valley glaciers [PDF]

, 2005
This paper uses a combination of field data and three-dimensional modeling to investigate the spatial variability in basal conditions required to induce observed fluctuations in diurnal ice velocity at Haut Glacier d'Arolla, Switzerland.
Hubbard, A. L., Sharp, M. J., Chandler, D. M., Mair, D. W. F., Nienow, P. W., Willis, I. C., Hubbard, B. P.   +6 more
core   +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

Microbiology: lessons from a first attempt at Lake Ellsworth [PDF]

, 2015
During the attempt to directly access, measure and sample Subglacial Lake Ellsworth in 2012–2013, we conducted microbiological analyses of the drilling equipment, scientific instrumentation, field camp and natural surroundings.
Magiopoulos, Iordanis, Mowlem, Matt, Pearce, David, Woodward, John, Tranter, Martyn, Siegert, Martin, Holt, Giles   +6 more
core   +1 more source