Results 31 to 40 of about 1,622 (202)

The "tipping" temperature within Subglacial Lake Ellsworth, West Antarctica and its implications for lake access. [PDF]

, 2011
We present results from new geophysical data allowing modelling of the water flow within Subglacial Lake Ellsworth (SLE), West Antarctica. Our simulations indicate that this lake has a novel temperature distribution due to significantly thinner ice than ...
Woodward, J., Mayer, Christoph, Woodward, John, Smith, A.M., Smith, Andrew, Ross, Neil, Thoma, M., Ross, N., K. Grosfeld, Grosfeld, Klaus, C. Mayer, N. Ross, M. Thoma, Smith, A. M., Mayer, C., Grosfeld, K., Smith, Andy, A. M. Smith, J. Woodward, Thoma, Malte   +19 more
core   +1 more source

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

Clean subglacial access: prospects for future deep hot-water drilling [PDF]

, 2015
Accessing and sampling subglacial environments deep beneath the Antarctic Ice Sheet presents several challenges to existing drilling technologies. With over half of the ice sheet believed to be resting on a wet bed, drilling down to this environment must
Smith, Andrew, Tranter, Martyn, Smith, Andrew M, Mowlem, M., Ross, N., Hodgson, Dominic A., Ross, N, Parnell, J, Rose, Mike, Mowlem, Matt, Bentley, Michael J., Siegert, MJ, Parnell, John, Mowlem, Matthew, Pearce, D., Hodgson, D.A., Siegert, M.J., Siegert, Martin J., Bentley, M.J., Tranter, M., Tranter, M, Rose, M, Smith, A.M., Ross, Neil, Smith, Andrew M., Makinson, K, Hodgson, DA, Makinson, Keith, Bentley, Michael, Hodgson, Dominic, Mowlem, M, Rose, M., Pearce, David, Pearce, D, Makinson, K., Siegert, Martin, Smith, AM, Parnell, J., Bentley, MJ   +38 more
core   +1 more source

An ice-sheet scale comparison of eskers with modelled subglacial drainage routes [PDF]

, 2015
Eskers record the signature of channelised meltwater drainage during deglaciation providing vital information on the nature and evolution of subglacial drainage.
Stokes, C.R., C.D. Clark (630927), Storrar, RD, Clark, CD, Tarasov, L, Stokes, Chris R., Hillier, J.K., Clark, C.D., Livingstone, SJ, Clark, Chris D., C.R. Stokes (630946), Tarasov, L., Livingstone, S.J., Stephen J. Livingstone (3691018), Tarasov, Lev, Livingstone, Stephen J., John Hillier (1254873), Storrar, Robert D., R. Storrar (630947), Hillier, JK, Hillier, John K., L. Tarasov (7191965), Storrar, R.D., Stokes, CR   +23 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

Active subglacial lakes in the Canadian Arctic identified by multi-annual ice elevation changes [PDF]

The Cryosphere
Subglacial lakes influence glacier hydrology, dynamics, and mass balance; however, they are poorly documented outside the polar ice sheets. Here we use high-resolution digital elevation models during 2011–2021 and regression analysis to characterize ...
W. Zheng, W. Zheng, W. Van Wychen, T. Li, T. Yamanokuchi   +4 more
doaj   +1 more source

Antarctic subglacial lakes drain through sediment-floored canals: theory and model testing on real and idealized domains [PDF]

The Cryosphere, 2017
Over the past decade, satellite observations of ice surface height have revealed that active subglacial lake systems are widespread under the Antarctic Ice Sheet, including the ice streams. For some of these systems, additional observations of ice-stream
S. P. Carter, H. A. Fricker, M. R. Siegfried   +2 more
doaj   +1 more source

Brief communication: Subglacial lake drainage beneath Isunguata Sermia, West Greenland: geomorphic and ice dynamic effects [PDF]

The Cryosphere, 2019
We report three active subglacial lakes within 2 km of the lateral margin of Isunguata Sermia, West Greenland, identified by differencing time-stamped ArcticDEM strips.
S. J. Livingstone, A. J. Sole, R. D. Storrar, D. Harrison, N. Ross, J. Bowling   +5 more
doaj   +1 more source

Aerogeophysical characterization of an active subglacial lake system in the David Glacier catchment, Antarctica [PDF]

The Cryosphere, 2020
In the 2016–2017 austral summer, the University of Texas Institute for Geophysics (UTIG) and the Korea Polar Research Institute (KOPRI) collaborated to perform a helicopter-based radar and laser altimeter survey of lower David Glacier with the goals of ...
L. E. Lindzey, L. E. Lindzey, L. E. Lindzey, L. H. Beem, D. A. Young, E. Quartini, E. Quartini, E. Quartini, D. D. Blankenship, D. D. Blankenship, C.-K. Lee, W. S. Lee, J. I. Lee, J. Lee   +13 more
doaj   +1 more source

Hydrodynamics and hydrogeochemistry of Werenskiold Glacier forefield, SW Spitsbergen [PDF]

Polish Polar Research, 2023
In the 2008 ablation season, subglacial springs discharge, flow rate and profiling of the proglacial river, physical-chemical parameters (pH, temperature, electrical conductivity) and chemical composition (HCO3−, SO42−, Cl−, NO3−, NO2−, PO43−, Ca2+, Mg2+,
Magdalena Modelska, Sebastian Buczyński
doaj   +1 more source