Results 21 to 30 of about 194,023 (268)
Dynamics of colloidal particles in ice [PDF]
The Journal of Chemical Physics, 2011 We use x-ray photon correlation spectroscopy (XPCS) to probe the dynamics of colloidal particles in polycrystalline ice. During freezing, the dendritic ice morphology and rejection of particles from the ice created regions of high particle density, where some of the colloids were forced into contact and formed disordered aggregates.
Spannuth, Melissa +3 more
openaire +5 more sources
Geophysical Research Letters, 2023 Sea‐ice extent is predicted to decrease in a warming climate. However, despite global warming over the past century, total Antarctic sea ice remained relatively stable from 1979 until 2015, before strongly melting.
Quentin Dalaiden +5 more
doaj +1 more source
Evidence for dynamic kagome ice [PDF]
Nature Communications, 2018 AbstractThe search for two-dimensional quantum spin liquids, exotic magnetic states remaining disordered down to zero temperature, has been a great challenge in frustrated magnetism over the last few decades. Recently, evidence for fractionalized excitations, called spinons, emerging from these states has been observed in kagome and triangular ...
E. Lhotel +7 more
openaire +7 more sources
The internal structure of the Brunt Ice Shelf from ice-penetrating radar analysis and implications for ice shelf fracture [PDF]
The Cryosphere, 2018 The rate and direction of rift propagation through ice shelves depend on both the stress field and the heterogeneity (or otherwise) of the physical properties of the ice.
E. C. King +4 more
doaj +1 more source
An Age Scale for the First Shallow (Sub-)Antarctic Ice Core from Young Island, Northwest Ross Sea
Geosciences, 2021 The climate of the sub-Antarctic is important in understanding the environmental conditions of Antarctica and the Southern Ocean. However, regional climate proxy records from this region are scarce.
Dorothea Elisabeth Moser +10 more
doaj +1 more source
Morphology and Dynamics of Ice Rises [PDF]
Journal of Glaciology, 1980 AbstractProfile surveys are presented of four ice rises on the east coast of the Antarctic Peninsula. On Butler Island velocity measurements were also made. The ice rises behave as miniature ice caps frozen to flat horizontal bedrock and provide a simple system for the study of laws of ice flow. Deformation is principally by shear through the ice mass.
Martin, P.J., Sanderson, T. J.O.
openaire +2 more sources
Stochastic ice stream dynamics [PDF]
Proceedings of the National Academy of Sciences, 2016 Significance Ice streams form the backbone of the flow field of ice sheets. They are known to exhibit a complex spatiotemporal dynamics, which is largely not well understood. Understanding the controls on such dynamics is crucial to sea level change projections as well as to the interpretation of paleorecords.
MANTELLI, ELISA +2 more
openaire +3 more sources
First evidence of industrial fly-ash in an Antarctic ice core
Scientific Reports, 2023 Spheroidal carbonaceous particles (SCPs) are a component of fly-ash, the particulate by-product of industrial high temperature combustion of fuel-oil and coal-series fuels.
E. R. Thomas +4 more
doaj +1 more source
Dynamic Ic and Dynamic Programming [PDF]
SSRN Electronic Journal, 2019 This paper develops a dynamic programming method when the one-stage deviation principle in the sense of mechanism design literature doesn’t hold. The commonly used dynamic programming method is valid only if the one-stage deviation principle in the sense of mechanism design literature is satisfied; it doesn't hold in every model, and the one-stage ...
openaire +2 more sources
The dynamic tensile strength of ice and ice‐silicate mixtures [PDF]
Journal of Geophysical Research: Solid Earth, 1983 We determined the dynamic tensile strength of ice and ice silicate mixtures at strain rates of ∼104 s−1. At these strain rates, ice has a tensile strength of ∼17 MPa, and ice‐silicate mixtures with 5 and 30 wt % sand content have strengths of ∼20 and 22 MPa, respectively. These values lie significantly above tensile strengths of ∼1.6 MPa for ice and of
Lange, Manfred A., Ahrens, Thomas J.
openaire +2 more sources