Results 31 to 40 of about 257,875 (187)

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.
Holt, G., Woodward, J., Pearce, D. A., Tranter, Martyn, Mowlem, M., Siegert, Martin J, Siegert, M.J., Siegert, M. J., Magiopoulos, I., Pearce, D.A., Tranter, M., Woodward, J, Woodward, John, Holt, Giles, Magiopoulos, Iordanis, Mowlem, Matt, Pearce, David, Siegert, Martin   +17 more
core   +3 more sources

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   +2 more sources

Exploring subglacial Antarctic lake environments [PDF]

Eos, Transactions American Geophysical Union, 2005
While subglacial lakes have been suspected, and speculated about, for more than 50 years, recent analyses of historical and new data have shown that liquid water environments are common beneath the vast Antarctic Ice Sheet. Airborne radar surveys have now documented more than 145 subglacial lakes, the largest being Lake Vostok located 4 km beneath the ...
Priscu, J. C., Kennicutt, M. C., Bell, Robin E., Bulat, S. A., Ellis-Evans, J. C., Lukin, V. V., Petit, J.-R., Powell, R. D., Siegert, M. J., Tabacco, I.   +9 more
openaire   +4 more sources

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

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

Physiological Ecology of Microorganisms in Subglacial Lake Whillans [PDF]

Frontiers in Microbiology, 2016
Subglacial microbial habitats are widespread in glaciated regions of our planet. Some of these environments have been isolated from the atmosphere and from sunlight for many thousands of years. Consequently, ecosystem processes must rely on energy gained from the oxidation of inorganic substrates or detrital organic matter.
Trista J Vick-Majors, Trista J Vick-Majors, Andrew C Mitchell, Amanda M Achberger, Brent C Christner, Brent C Christner, John E Dore, Alexander Bryce Michaud, Alexander Bryce Michaud, Jill A Mikucki, Alicia M Purcell, Alicia M Purcell, Mark L Skidmore, John C Priscu   +13 more
openaire   +3 more sources

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

Models of ice melting and edifice growth during subglacial basaltic eruptions. [PDF]

, 2007
Models of the early stages of basaltic eruptions beneath temperate glaciers are presented that consider the evolving sizes of volcanic edifices emplaced within subglacial cavities.
Tuffen, Hugh
core   +4 more sources

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

Monitoring the Hydrological Activities of Antarctic Subglacial Lakes Using CryoSat-2 and ICESat-2 Altimetry Data

Remote Sensing, 2022
Monitoring the hydrological activities of subglacial lakes is critical to understanding the subglacial hydrological system and evaluating the internal mass changes of the Antarctic ice sheet.
Yi Fan, Weifeng Hao, Baojun Zhang, Chao Ma, Shengjun Gao, Xiao Shen, Fei Li   +6 more
doaj   +1 more source