Results 51 to 60 of about 1,003 (174)

Microstructure-based simulations of the viscous densification of snow and firn

The Cryosphere, 2023
Abstract. Accurate models for the viscous densification of snow and firn under mechanical stress are of primary importance for various applications, including avalanche prediction and the interpretation of ice cores. Formulations of snow and firn compaction in models are still largely empirical, instead of using microstructures from micro-computed ...
K. Fourteau, K. Fourteau, J. Freitag, M. Malinen, H. Löwe   +4 more
openaire   +4 more sources

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

Snow water equivalent retrieved from X- and dual Ku-band scatterometer measurements at Sodankylä using the Markov Chain Monte Carlo method [PDF]

The Cryosphere
Radar at high frequency is a promising technique for fine-resolution snow water equivalent (SWE) mapping. In this paper, we extend the Bayesian-based Algorithm for SWE Estimation (BASE) from passive to active microwave (AM) application and test it using ...
J. Pan, J. Pan, M. Durand, J. Lemmetyinen, D. Liu, J. Shi   +5 more
doaj   +1 more source

Study of a temperature gradient metamorphism of snow from 3-D images: time evolution of microstructures, physical properties and their associated anisotropy [PDF]

The Cryosphere, 2014
We carried out a study to monitor the time evolution of microstructural and physical properties of snow during temperature gradient metamorphism: a snow slab was subjected to a constant temperature gradient in the vertical direction for 3 weeks in a cold
N. Calonne, F. Flin, C. Geindreau, B. Lesaffre, S. Rolland du Roscoat   +4 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

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

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

Presenting Snow Grain Size and Shape Distributions in Northern Canada Using a New Photographic Device Allowing 2D and 3D Representation of Snow Grains

Frontiers in Earth Science, 2020
Geophysical properties of snow are known to be sensitive to climate variability and are of primary importance for hydrological and climatological process simulations.
Alexandre Langlois, Alexandre Langlois, Alain Royer, Alain Royer, Benoit Montpetit, Alexandre Roy, Alexandre Roy, Martin Durocher   +7 more
doaj   +1 more source

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