Results 31 to 40 of about 4,948 (179)

Age estimates of isochronous reflection horizons by combining ice core, survey, and synthetic radar data. [PDF]

open access: yes, 2004
Ice core records and ice-penetrating radar data contain complementary information on glacial subsurface structure and composition, providing various opportunities for interpreting past and present environmental conditions.
Eisen, Olaf   +3 more
core   +1 more source

Inversion for the density–depth profile of Dome A, East Antarctica, using frequency-modulated continuous wave radar

open access: yesJournal of Glaciology, 2021
The density–depth relationship of the Antarctic ice sheet is important for establishing a high-precision surface mass balance model and predicting future ice-sheet contributions to global sea levels.
Wangxiao Yang   +8 more
doaj   +1 more source

A framework for attenuation method selection evaluated with ice-penetrating radar data at South Pole Lake

open access: yesAnnals of Glaciology, 2020
All radar power interpretations require a correction for attenuative losses. Moreover, radar attenuation is a proxy for ice-column properties, such as temperature and chemistry. Prior studies use either paired thermodynamic and conductivity models or the
Benjamin H. Hills   +2 more
doaj   +1 more source

Polarimetric multi-offset radio-echo sounding with a radio frequency-over-fiber ApRES system

open access: yesJournal of Glaciology
Polarimetric multi-offset radio-echo sounding offers improved constraints on englacial thermal conditions, basal properties and ice crystal orientation compared to standard monostatic observations.
Daniel F. May   +9 more
doaj   +1 more source

Report of the Wintering Party of the 12th Japanese Antarctic Research Expedition in 1971-1972

open access: yesAntarctic Record, 1974
1. The 12th wintering party consisting of 29 members was in charge of research activities at Syowa Station for the period from March 1971 to February 1972.
Takasi OGUTI
doaj   +1 more source

Assessing the subglacial lake coverage of Antarctica

open access: yesAnnals of Glaciology, 2016
Lakes beneath the Antarctic Ice Sheet are known to decrease traction at the ice base and therefore can have a great impact on ice dynamics. However, the total extent of Antarctic subglacial lakes is still unknown.
Sebastian Goeller   +3 more
doaj   +1 more source

Automated detection and characterization of Antarctic basal units using radar sounding data: demonstration in Institute Ice Stream, West Antarctica

open access: yesAnnals of Glaciology, 2020
Basal units – visibly distinct englacial structures near the ice-bed interface – warrant investigation for a number of reasons. Many are of unknown composition and origin, characteristics that could provide substantial insight into subglacial processes ...
Madison L. Goldberg   +5 more
doaj   +1 more source

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

open access: yes, 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.
Hart, J.K.   +5 more
core   +1 more source

Glacier changes in the Bavarian Alps from 1989/90 to 2006/07 [PDF]

open access: yes, 2008
The five glaciers in Bavaria which today cover a total area of less than one square kilometer were frequently monitored by geodetic methods from the mid of the 20th century. In this paper, the record is extended by new surveys in 1999 and 2006.
Hagg, Wilfried   +2 more
core   +1 more source

Rates of Sea‐Level Rise Are Highly Sensitive to Ice Viscosity Parameters in Model Benchmarks

open access: yesAGU Advances, Volume 7, Issue 2, April 2026.
Abstract Glacier flow plays a major role in current and future rates of globally averaged sea‐level rise. The viscosity of glacial ice, controlling the rate of flow, decreases as stress increases and is highly sensitive to the value of the stress exponent, n $n$, in the constitutive equation for viscous flow.
D. F. Martin   +5 more
wiley   +1 more source

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