Results 81 to 90 of about 2,939 (220)

Characterization of glacial silt and clay using automated mineralogy

Annals of Glaciology, 2019
Glacial erosion produces vast quantities of fine-grained sediment that has a far-reaching impact on Earth surface processes. To gain a better understanding of the production of glacial silt and clay, we use automated mineralogy to quantify the ...
Jeff W. Crompton, Gwenn E. Flowers, Brendan Dyck   +2 more
doaj   +1 more source

Teleseismic S‐Wave Coda Autocorrelation and vp/vs ${v}_{p}/{v}_{s}$ Distribution Over the Antarctic Ice Sheet

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Accurate characterization of the compressional to shear (P‐to‐S) wave‐speed ratio (vp/vs ${v}_{p}/{v}_{s}$) within the Antarctic Ice Sheet (AIS) is crucial for understanding its internal structure, mechanical stability, and vulnerability to a changing climate.
Ammu Sanjayan, Thanh‐Son Phạm, Hrvoje Tkalčić   +2 more
wiley   +1 more source

A wireless multi-sensor subglacial probe: design and preliminary results [PDF]

, 2006
This paper introduces a new way to investigate in situ processes, the wireless multi-sensor probe, as part of an environmental sensor network. Instruments are housed within a 'probe' which can move freely and so behave like a clast.
Martinez, Kirk, Ong, Royan, Rose, Kathryn C., Hart, Jane K., Rose, K.C., Ong, R., Padhy, Paritosh, Martinez, K., Riddoch, A., Padhay, P., Hart, J.K., Riddoch, Alistair   +11 more
core   +1 more source

Characterization of seismicity from different glacial bed types: machine learning classification of laboratory stick-slip acoustic emissions

Annals of Glaciology
Subglacial seismicity presents the opportunity to monitor inaccessible glacial beds at the epicentral location and time. Glaciers can be underlain by rock or till, a first order control on bed mechanics.
Seth Saltiel, Nathan Groebner, Theresa Sawi, Christine McCarthy   +3 more
doaj   +1 more source

Modeling saline-fluid flow through subglacial channels [PDF]

The Cryosphere
Subglacial hydrological systems impact ice dynamics, biological environments, and sediment transport. Previous numerical models of channelized subglacial flow have focused on freshwater in temperate ice without considering variable fluid chemistry and ...
A. Jenson, A. Jenson, M. Skidmore, L. Beem, M. Truffer, S. McCalla   +5 more
doaj   +1 more source

Meteoric 10Be as a tracer of subglacial processes and interglacial surface exposure in Greenland [PDF]

Quaternary Science Reviews, 2018
Abstract In order to test whether sediment emerging from presently glaciated areas of Greenland was exposed near or at Earth's surface during previous interglacial periods, we measured the rare isotope 10Be contained in grain coatings of sediment collected at five ice marginal sites. Such grain coatings contain meteoric 10Be (10Bemet), which forms in
Joseph A. Graly, Lee B. Corbett, Paul R. Bierman, Andrea Lini, Thomas A. Neumann   +4 more
openaire   +1 more source

Capturing Runoff‐Driven Seasonal Velocity Variations of Fast‐Flowing Outlet Glaciers in Coupled Ice‐Hydrology Simulations

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The seasonal evolution of the subglacial drainage system is a critical control on velocity variations of Greenland marine‐terminating glaciers. Yet numerical models struggle to reproduce observed seasonal behavior, because fast flow suppresses channelization in subglacial hydrology models.
A. Jenson, J. M. Amundson, M. Truffer, A. Pohle, L. Ultee   +4 more
wiley   +1 more source

Quantification of Heat and Salt Budgets in the Western Ross Ice Shelf Cavity and Polynya System

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract The Ross Ice Shelf Polynya (RISP) is one of the primary production sites of the High Salinity Shelf Water (HSSW), the precursor of Antarctic Bottom Water (AABW) that drives the lower limb of global meridional overturning circulation. Utilizing a multi‐platform historical data set gathered over the western Ross Sea continental shelf, this study
Chuning Wang, Zhaoru Zhang, Meng Zhou
wiley   +1 more source

Supraglacial forcing of subglacial drainage in the ablation zone of the Greenland ice sheet [PDF]

, 2011
Peer ...
Steven Palmer, Peter Nienow, Mair, Douglas, Mair, D., Wadham, J., S., Palmer, Douglas Mair, Ian Bartholomew, Sole, Andrew, Andrew Sole, Thomas Cowton, T., Cowton, Nienow, Peter, Jemma Wadham, Palmer, Steven, Wadham, JL, Cowton, Thomas, Bartholomew, Ian, Sole, A., Palmer, S., P., Nienow, Wadham, Jemma, Cowton, T., Bartholomew, I., A., Sole, Nienow, P.   +25 more
core   +1 more source

Reactivation of a Subglacial Channel Around the Grounding Zone of Roi Baudouin Ice Shelf, Antarctica

Geophysical Research Letters
Subglacial water beneath the Antarctic Ice Sheet is often funneled via subglacial channels, which inject freshwater into ice‐shelf cavities where it interacts with ocean water.
Yan Zhou, Steven Franke, Thomas Kleiner, Reinhard Drews, Angelika Humbert, Daniela Jansen, Daniel Steinhage, Olaf Eisen   +7 more
doaj   +1 more source