Results 31 to 40 of about 800 (174)

Assessment of thermobaric state and change of the mass balance in the subgkacial Lake Vostok after drilling-in

open access: yesЛëд и снег, 2015
Estimation of temperature and pressure conditions in the subglacial reservoirs is one of the most important tasks of modern subglacial research, since it provides an adequate tool for predicting the process of their accessing.
A. N. Markov, P. G. Talalay
doaj   +1 more source

The "tipping" temperature within Subglacial Lake Ellsworth, West Antarctica and its implications for lake access [PDF]

open access: yesThe Cryosphere, 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 ...
M. Thoma   +5 more
doaj   +1 more source

Who discovered the Lake Vostok?

open access: yesЛëд и снег, 2016
A history of the subglacial lake Vostok that had been revealed near this Soviet Antarctic Station is briefly described in the paper. Three participants of the Soviet Antarctic Expeditions played a significant part in the history of the Lake discovery ...
V. M. Kotlyakov, V. A. Krenev
doaj   +1 more source

Analysis of long-term dynamic changes of subglacial lakes in the Recovery Ice Stream, Antarctica [PDF]

open access: yesThe Cryosphere
The dynamic activity of subglacial lakes plays a crucial role in modulating glacial processes and the mass balance of the Antarctic ice sheet. The Recovery Ice Stream (RIS), projected to experience significant mass loss in East Antarctica during coming ...
T. Feng   +7 more
doaj   +1 more source

Discovery of relict subglacial lakes and their geometry and mechanism of drainage

open access: yesNature Communications, 2016
Our understanding of subglacial lake drainage events is limited by a lack of direct observations. Here, the authors use ground penetrating radar to identify a relict subglacial lake and infer drainage mechanisms based on geomorphological features.
Stephen J. Livingstone   +6 more
doaj   +1 more source

Subglacial flood path development during a rapidly rising jökulhlaup from the western Skaftá cauldron, Vatnajökull, Iceland

open access: yesJournal of Glaciology, 2017
Discharge and water temperature measurements in the Skaftá river and measurements of the lowering of the ice over the subglacial lake at the western Skaftá cauldron, Vatnajökull, Iceland, were made during a rapidly rising glacial outburst flood ...
BERGUR EINARSSON   +4 more
doaj   +1 more source

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

open access: yesThe 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

open access: yesJournal 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

Antarctic subglacial lakes drain through sediment-floored canals: theory and model testing on real and idealized domains [PDF]

open access: yesThe 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   +2 more
doaj   +1 more source

Geochronological reconstruction of the Lateglacial deglaciation in the Arve Valley (Northern French Alps)

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT The timing and spatial patterns of glaciers retreat in the Northern French Alps during the Lateglacial (19.0–11.7 ka) remain debated, reflecting discrepancies among available chronological data sets. The complex interactions between major glaciers, such as the Rhône and Arve glaciers to the north and the Isère glacier to the south, represent a
Quentin Portal   +3 more
wiley   +1 more source

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