Results 61 to 70 of about 1,030 (174)

Wind enhances differential air advection in surface snow at sub-meter scales [PDF]

The Cryosphere, 2017
Atmospheric pressure gradients and pressure fluctuations drive within-snow air movement that enhances gas mobility through interstitial pore space.
S. A. Drake, J. S. Selker, C. W. Higgins
doaj   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

Advanced Materials Technologies, Volume 11, Issue 10, 22 May 2026.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani, Carlo Antonini, Teresa Gatti, Mengjiao Wang   +3 more
wiley   +1 more source

Stratified Pit Features at the Presbytère de l'Ancienne‐Lorette (CeEu‐11) and the Fort Odanak (CaFe‐7) Sites in Québec, Canada: A Comparative Geoarchaeological Analysis

Geoarchaeology, Volume 41, Issue 3, May/June 2026.
ABSTRACT A geoarcheological study of two large, stratified Indigenous pit features discovered at two Jesuit mission sites in Québec (Canada) was carried out to offer a detailed documentation of their contents and better understand their use over time. One of the pits is a 17th c.
Sarah Robert, Allison Bain, Najat Bhiry
wiley   +1 more source

Microorganisms Associated With Dust on Alpine Snow

Frontiers in Earth Science, 2020
We investigated snow microstructure and microbial composition from snow samples collected from western Colorado, a region that experiences frequent dust-on-snow deposition events.
Zoe R. Courville, Ross M. Lieblappen, Ross M. Lieblappen, Alison K. Thurston, Robyn A. Barbato, John M. Fegyveresi, John M. Fegyveresi, Lauren B. Farnsworth, Jeff Derry, R. M. Jones, Stacey J. Doherty, Shelby A. Rosten   +11 more
doaj   +1 more source

Unraveling the Mystery of Melt Migration in Migmatites: From Channeling Instability to Pattern Formation

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Melt migration in partially molten rocks is commonly described by porous flow models controlled by the hydro‐mechanical compaction length, which effectively explains melt extraction at mid‐ocean ridges. However, this framework cannot account for the paradoxical accumulation of small melt fractions into rhythmic leucosome–melanosome bands in ...
Qingpei Sun, Manman Hu, Roberto Weinberg, Klaus Regenauer‐Lieb   +3 more
wiley   +1 more source

Ice Spheres as Model Snow: Tumbling, Sintering, and Mechanical Tests

Frontiers in Earth Science, 2019
The snow microstructure is crucial for the mechanical behavior of snow, but is usually simplified in numerical models. In Discrete Element Models (DEM), often used in snow mechanics, the microstructure is typically represented by sphere assemblies.
Carolin Willibald, Sophia Scheuber, Henning Löwe, Jürg Dual, Martin Schneebeli   +4 more
doaj   +1 more source

Fabric, Texture, and Bubble Characteristics of the Million‐Year Old Allan Hills Blue Ice Core ALHIC1901

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Ice cores from the Allan Hills blue ice area in Antarctica have been dated to several million years of age. However, the stratigraphy of these cores is often disturbed, and age reversals are common, hampering the interpretation of the derived climate records.
Nicolas Stoll, Marguerite Shaya, Liam Kirkpatrick, Johannes Freitag, Valens Hishamunda, John‐Morgan Manos, Daniela Jansen, Ilka Weikusat, John Fegyveresi, Bradley Paul Lipovsky, Ed Brook, Sarah Shackleton, John Higgins, T. J. Fudge   +13 more
wiley   +1 more source

Microstructure-based modelling of snow mechanics: experimental evaluation of the cone penetration test [PDF]

The Cryosphere
Snow is a complex porous material presenting a variety of microstructural patterns. This microstructure largely controls the mechanical properties of snow, although the relation between the micro and macro properties remains to be better understood ...
C. Herny, C. Herny, P. Hagenmuller, G. Chambon, I. Peinke, J. Roulle   +5 more
doaj   +1 more source

In Situ Raman Spectroscopy of a Silica Gel‐Templated Hydration Pathway in CO2‐Activated Cement

Journal of the American Ceramic Society, Volume 109, Issue 5, May 2026.
ABSTRACT This study investigates early‐age carbonate mineralization in cementitious systems using in situ Raman microspectroscopy. In the presence of dissolved CO2, clinker phases undergo accelerated dissolution, decomposing to form various calcium carbonate polymorphs and a transient amorphous silica gel network.
Marcin Hajduczek, Yogiraj Sargam, Sean Monkman, Vishnu Chaudhari, Santiago El Awad, Franz‐Josef Ulm, Admir Masic   +6 more
wiley   +1 more source

Measurement of Microstructure of Snow from Surface Sections

Defence Science Journal, 1995
A new approach to modelling the microstructure of snow is presented. The features involved in this formulation include skeletonising of the granular material and the modelling of the necks as a system of truncated cones. The skeletonising involves the process of representing the granular structure by a series of lines describing the grains and the
M.Q. Edens, R.L. Brown
openaire   +1 more source