Results 31 to 40 of about 47,826 (311)

Development of a low-temperature immersion microscopy technique for ice research

open access: yesAnnals of Glaciology, 2023
Perennial ice can be studied for many purposes, including paleoclimate records or rheological properties. For most of those purposes, the ice microstructure must be studied, often through optical microscopy.
Bittor Muniozguren-Arostegi   +2 more
doaj   +1 more source

Upstream flow effects revealed in the EastGRIP ice core using Monte Carlo inversion of a two-dimensional ice-flow model [PDF]

open access: yesThe Cryosphere, 2021
The Northeast Greenland Ice Stream (NEGIS) is the largest active ice stream on the Greenland Ice Sheet (GrIS) and a crucial contributor to the ice-sheet mass balance.
T. A. Gerber   +8 more
doaj   +1 more source

Neutron diffraction and NMR relaxation studies of structural variation and phase transformations for water/ice in SBA-15 silica: I. The over-filled case [PDF]

open access: yes, 2006
Neutron diffraction and NMR relaxation measurements have been made of water/ice in SBA-15, a mesoporous silica constituting an ordered array of cylindrical mesopores of pore diameter similar to 86 angstrom, over the temperature range 180-300 K in a ...
Webber, J. Beau W.   +18 more
core   +1 more source

A novel conceptual model for Dansgaard–Oeschger event dynamics based on ice-core data [PDF]

open access: yesClimate of the Past
This study introduces a novel dynamical systems model designed to capture the highly non-periodic nature of Dansgaard–Oeschger (DO) events. Such events are difficult to model adequately due to their variable durations (some lasting around 1 century ...
J. O. Melcher   +5 more
doaj   +1 more source

An assessment of key model parametric uncertainties in projections of Greenland Ice Sheet behavior [PDF]

open access: yes, 2012
Lack of knowledge about the values of ice sheet model input parameters introduces substantial uncertainty into projections of Greenland Ice Sheet contributions to future sea level rise.
Stone, Emma J.   +17 more
core   +1 more source

Measuring temperature of the ice surface during its formation by using infrared instrumentation [PDF]

open access: yes, 2007
A non-destructive remote sensing technique was used to measure the surface temperature of a thin macroscopic water film flowing on a growing asymmetric ice accretion during its formation inside an icing research wind tunnel.
Kollar, László E.   +2 more
core   +1 more source

Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream

open access: yesScientific Reports, 2018
The Barents Sea Ice Sheet was a marine-based ice sheet, i.e., it rested on the Barents Sea floor during the Last Glacial Maximum (21 ky BP). The Bjørnøyrenna Ice Stream was the largest ice stream draining the Barents Sea Ice Sheet and is regarded as an ...
Michele Petrini   +9 more
doaj   +1 more source

Strengthening ice through cyclic loading

open access: yesJournal of Glaciology, 2017
New experiments reveal that the flexural strength of fresh water, columnar-grained ice loaded normal to the columns may be increased by about a factor of two upon reversed cyclic loading at a frequency of ~0.1 Hz at stress amplitudes of 1.3–2.6 MPa.
DANIEL ILIESCU   +3 more
doaj   +1 more source

Freezing nucleation apparatus puts new slant on study of biological ice nucleators in precipitation [PDF]

open access: yes, 2014
For decades, drop-freezing instruments have contributed to a better understanding of biological ice nucleation and its likely implications for cloud and precipitation development. Yet, current instruments have limitations.
Stopelli, Emiliano   +12 more
core   +1 more source

Pore Accessibility in Amorphous Solid Water

open access: yesThe Astrophysical Journal, 2022
The porous nature of amorphous solid water (ASW) can significantly effect the chemical evolution of any planetary or astrophysical surface it forms on due to its ability to trap and retain volatiles. The amount of volatiles that can enter an ASW grain or
Rebecca A. Carmack   +2 more
doaj   +1 more source

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