Modeling Antarctic subglacial lake filling and drainage cycles [PDF]
The Cryosphere, 2016 The growth and drainage of active subglacial lakes in Antarctica has previously been inferred from analysis of ice surface altimetry data. We use a subglacial hydrology model applied to a synthetic Antarctic ice stream to examine internal controls on the
C. F. Dow +3 more
doaj +1 more source
Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data [PDF]
, 2017 In order to reveal provenance of detrital sediments supplied by West Antarctic Ice Sheet (WAIS), 19 glaciomarine cores of Last Glacial Maximum age were analyzed from Eastern Ross Sea and Sulzberger Bay.
Andreucci, Benedetta +4 more
core +2 more sources
Subglacial hydrology and the formation of ice streams [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014 Antarctic ice streams are associated with pressurized subglacial meltwater but the role this water plays in the dynamics of the streams is not known. To address this, we present a model of subglacial water flow below ice sheets, and particularly below ice streams.
Andrew C. Fowler +3 more
openaire +4 more sources
Ice fabric in an Antarctic ice stream interpreted from seismic anisotropy [PDF]
, 2017 Here we present new measurements of an anisotropic ice fabric in a fast moving (377 ma−1) ice stream in West Antarctica. We use ∼6000 measurements of shear wave splitting observed in microseismic signals from the bed of Rutford Ice Stream, to show that ...
Alan F. Baird +40 more
core +3 more sources
High basal melting forming a channel at the grounding line of Ross Ice Shelf, Antarctica [PDF]
, 2016 Antarctica's ice shelves are thinning at an increasing rate, affecting their buttressing ability. Channels in the ice shelf base unevenly distribute melting, and their evolution provides insight into changing subglacial and oceanic conditions.
Catania, Ginny +6 more
core +1 more source
Tidal controls on the flow of ice streams [PDF]
Geophysical Research Letters, 2016 AbstractThe flow of many Antarctic ice streams is known to be significantly influenced by tides. In the past, modeling studies have implemented the tidal forces acting on a coupled ice stream/ice shelf system in a number of different ways, but the consequences that this has on the modeled response of ice streams to tides have, until now, not been ...
Rosier, Sebastian H.R. +1 more
openaire +3 more sources
Array processing in cryoseismology: a comparison to network-based approaches at an Antarctic ice stream [PDF]
The Cryosphere, 2023 Seismicity at glaciers, ice sheets, and ice shelves provides observational constraint on a number of glaciological processes. Detecting and locating this seismicity, specifically icequakes, is a necessary first step in studying processes such as basal ...
T. S. Hudson +4 more
doaj +1 more source
Spatiotemporal Dynamics of Ice Streams Due to a Triple-Valued Sliding Law [PDF]
, 2010 We show that a triple-valued sliding law can be heuristically motivated by the transverse spatial structure of an ice-stream velocity field using a simple one-dimensional model.
Sayag, Roiy, Tziperman, Eli
core +1 more source
Stream hydrology controls on ice cliff evolution and survival on debris-covered glaciers [PDF]
Earth Surface DynamicsIce cliffs are melt hot spots that contribute disproportionately to melt on debris-covered glaciers. In this study, we investigate the impact of supraglacial stream hydrology on ice cliffs using in situ and remote sensing observations, streamflow ...
E. Petersen +3 more
doaj +1 more source
A geomorphological overview of glacial landforms on the Icelandic continental shelf [PDF]
, 2009 The availability of a bathymetric database that covers about 80% of the Icelandic shelf has made it possible to produce a geomorphological map of the glacial landforms.
Clark, C.D., Spagnolo, M.
core +1 more source