Results 51 to 60 of about 8,984 (223)

Active-source seismic characterization of subglacial lakes: numerical modeling, field validation, and implications for Antarctic exploration [PDF]

The Cryosphere
Subglacial lakes offer unique opportunities to study ice sheet dynamics, microbial life, and climate evolution. Motivated by the upcoming seismic survey of Qilin Subglacial Lake, this study constructs a representative subglacial lake model and extends it
K. Lu, Y. Chen
doaj   +1 more source

Ice-marginal lake hydrology and the seasonal dynamical evolution of Kennicott Glacier, Alaska

Journal of Glaciology, 2020
Glacier basal motion is responsible for the majority of ice flux on fast-flowing glaciers, enables rapid changes in glacier motion and provides the means by which glaciers shape alpine landscapes. In an effort to enhance our understanding of basal motion,
William H. Armstrong, Robert S. Anderson
doaj   +1 more source

Climatic control on the peak discharge of glacier outburst floods

, 2007
Lakes impounded by natural ice dams occur in many glacier regions. Their sudden emptying along subglacial paths can unleash similar to 1 km(3) of floodwater, but predicting the peak discharge of these subglacial outburst floods ('jokulhlaups') is ...
Liu, S., Mavlyudov, B., Ng, F.S.L., Wang, Y.   +3 more
core   +1 more source

Monitoring Subglacial Lake Activity in the David Glacier Region, East Antarctica, Using a DInSAR Displacement Integration Approach

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Subglacial lakes significantly influence ice sheet dynamics, necessitating precise monitoring of their activity. This study presents a novel approach that integrates differential interferometric synthetic aperture radar (DInSAR) displacements from ...
Taewook Kim, Hyangsun Han, Hoonyol Lee, Hyeontae Ju   +3 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

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

, 2011
Peer reviewedPublisher ...
Alley, Andrew Sole, Bartholomew, Box, Catania, Collins, Das, Douglas Mair, Fenn, Hock, Ian Bartholomew, Jemma Wadham, Kamb, McMillan, Nienow, Palmer, Parizek, Peter Nienow, Pfeffer, Pimentel, Schoof, Shepherd, Shreve, Skidmore, Steven Palmer, Sundal, Sundal, Swift, Thomas Cowton, Van de Wal, van der Veen, Zwally   +31 more
core   +4 more sources

The Glacial Legacy of the Geneva Basin: Morphology and implications of an intricate tunnel valley system revealed from 3D seismic data

Journal of Quaternary Science, EarlyView.
ABSTRACT Like other perialpine basins and glaciated margins, the Geneva Basin in SW Switzerland is characterised by buried tunnel valleys, which are elongated incisions widely attributed to subglacial meltwater erosion beneath continental ice sheets. However, an inclusive understanding of the geological control on the evolution of the glacial landscape
Ovie Emmanuel Eruteya, Emna Meftah, Andrea Moscariello   +2 more
wiley   +1 more source

NEW FRONTIERS OF ANTARCTIC SUBGLACIAL LAKES EXPLORATION

Geography, Environment, Sustainability, 2013
Antarctic subglacial aquatic environment have become of great interest to the science community because they may provide unique information about microbial evolution, the past climate of the Earth, and the formation of the Antarctic ice sheet.
Pavel Talalay, Alexey Markov, Mikhail Sysoev   +2 more
doaj   +1 more source

A double continuum hydrological model for glacier applications [PDF]

, 2014
Peer reviewedPublisher ...
de Fleurian, B., Durand, G., Gagliardini, O., Le Meur, E., Mair, D., Raback, P., Zwinger, T.   +6 more
core   +2 more sources

Out in the cold? A review of Early Middle Palaeolithic settlements in northern Central Europe, age data and geological preconditions for site formation and preservation

Boreas, EarlyView.
The characteristics of settlement of Neanderthals in northern Central Europe during the earlier phases of the Middle Palaeolithic (Marine Isotope Stage 8–6) have been a matter of debate for decades, specifically regarding the population dynamics at such latitudes during the coldest phases. In this paper, we review the known archaeological record of the
Gianpiero Di Maida, Jutta Winsemann, Malte Hoffmann, Tobias Lauer, Utz Böhner, Thomas Terberger   +5 more
wiley   +1 more source