Results 121 to 130 of about 19,515,932 (251)

Defining Petrophysical Units of the Palmer Deep Sites from Leg 178 [PDF]

, 2002
Palmer Deep, on the inner continental shelf southwest of Anvers Island off the Antarctic Peninsula, is a glacially overdeepened basin consisting of three subbasins. Two sites, 1098 and 1099, were drilled in the Palmer Deep area.
Evans, A.J., Harvey, P.K., Hatfield, K.L.   +2 more
core   +1 more source

Glacitectonism, subglacial and glacilacustrine processes during a Neoproterozoic panglaciation, north‐east Svalbard

, 2016
Palaeoenvironmental reconstruction of Neoproterozoic successions has been the subject of long‐standing debate, particularly concerning the interpretation of diamictites.
E. Fleming, D. Benn, C. Stevenson, M. Petronis, M. Hambrey, I. Fairchild   +5 more
semanticscholar   +1 more source

Glacial erosion: status and outlook

Annals of Glaciology, 2019
Glacier-erosion rates range across orders of magnitude, and much of this variation cannot be attributed to basal sliding rates. Subglacial till acts as lubricating ‘fault gouge’ or ‘sawdust’, and must be removed for rapid subglacial bedrock erosion. Such
R. B. Alley, K. M. Cuffey, L. K. Zoet
doaj   +1 more source

A preliminary Scanning Electron Microscope (SEM) study of magnetite surface microtextures from the Wahianoa moraines, Mt Ruapehu, New Zealand. [PDF]

, 2010
Scanning electron microscope (SEM) of quartz micro‐textures has routinely been used to identify the depositional environment of sediments in areas of former ice‐sheet glaciation.
Brook, Martin S, Mandolla, Stephanie
core  

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

, 2014
Several recent studies predict that the West Antarctic Ice Sheet will become increasingly unstable under warmer conditions. Insights on such change can be assisted through investigations of the subglacial landscape, which contains imprints of former ice ...
Anne M. Le Brocq, Bamber, Bartholomew, Bartholomew, Cook, Cowton, David M. Rippin, DeConto, Dowsett, Fausto Ferraccioli, Fowler, Fretwell, Haran, Hugh F.J. Corr, Jordan, Joughin, Kathryn C. Rose, Le Brocq, Lewis, Martin J. Siegert, Miller, Mote, Naish, Neil Ross, Nitsche, Pritchard, Raymo, Rignot, Robert G. Bingham, Ross, Ross, Schoof, Shepherd, Smith, Sugden, Tom A. Jordan, Trusel, Wingham, Wright, Wright, Young, Zachos   +41 more
core   +2 more sources

Topography and accumulation rate as controls of asynchronous surging behaviour in the eastern and western branches of the Western Kunlun Glacier, Northwestern Tibetan Plateau

International Journal of Digital Earth
The western Kunlun main peak region is among the areas in High Mountain Asia where surge-type glaciers are highly concentrated. Here, we analyse the surging characteristics of the eastern and western branches of the Western Kunlun Glacier and the factors
Yongpeng Gao, Pengbin Liang, Miaomiao Qi, Xiaojun Yao, Xinggang Ma, Jianxin Mu, Lintao Li   +6 more
doaj   +1 more source

Subglacial Processes and Subglacial Hydrology

, 2016
The hydrology of glaciers is known to have a significant influence on glacier dynamics. Rapid variations in dynamics can occur due to changes in the glacial and subglacial hydrology. However, our understanding of the subglacial drainage system is based on few direct and usually short-term observations.
openaire   +1 more source

Simulating seasonal evolution of subglacial hydrology at a surging glacier in the Karakoram

Journal of Glaciology
Glacier motion, retreat and glacier hazards such as surges and glacial lake outburst floods (GLOFs) are likely underpinned by subglacial hydrology. Recent advances in subglacial hydrological modeling allow us to shed light on subglacial processes that ...
Neosha G. Narayanan, Aleah N. Sommers, Winnie Chu, Jakob F. Steiner, Muhammad Adnan Siddique, Colin R. Meyer, Brent Minchew   +6 more
doaj   +1 more source

Transient glacier dynamics and subglacial hydro-mechanical processes

, 2023
The Cryosphere, encompassing elements like sea ice, permafrost, snow, glaciers, and ice sheets, faces a grave threat from ongoing climate change and can significantly impact ecosystems, human lives, and livelihoods. Understanding their dynamics is essential to predict their future and inform mitigation strategies.
openaire   +2 more sources

Ice mass discharge through the Antarctic subglacial hydrographic network as a trigger for cryoseismicity

Journal of Glaciology
We analyse seismic time series collected during experimental campaigns in the area of the David Glacier, Victoria Land, Antarctica, between 2003 and 2016.
Stefania Danesi, Simone Salimbeni, Alessandra Borghi, Stefano Urbini, Achille Zirizzotti, Massimo Frezzotti   +5 more
doaj   +1 more source