Results 71 to 80 of about 1,030 (174)

Impact of spatial averaging on radar reflectivity at internal snowpack layer boundaries

Journal of Glaciology, 2016
Microwave radar amplitude within a snowpack can be strongly influenced by spatial variability of internal layer boundaries. We quantify the impact of spatial averaging of snow stratigraphy and physical snowpack properties on surface scattering from near ...
N. RUTTER, H.-P. MARSHALL, K. TAPE, R. ESSERY, J. KING   +4 more
doaj   +1 more source

Snow mechanics: from snow microstructure to avalanche formation

, 2022
Snow is a fascinating material. Its composition is relatively simple, mainly air and ice, but the arrangement of these components in three dimensions is extremely diverse. This diversity of microstructure, often reduced to discrete snow types, originates from different snowflake growth mechanisms in the atmosphere and the continuous evolution of snow ...
openaire   +1 more source

On the Influence of Mineral Dust on Glacial Albedo at Nevado Huascarán (Cordillera Blanca, Peru)

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract In addition to warming and hydrological changes, glacier retreat is influenced by mineral dust and other light absorbing impurities. However, very little is known about the presence of mineral dust in the tropical Andes, making it difficult to model the radiative impact of dust on glacial surfaces.
Austin M. Weber, Emilie Beaudon, M. Roxana Sierra‐Hernández, Mary Davis, Don Kenny, Tal Y. Shutkin, Lonnie G. Thompson   +6 more
wiley   +1 more source

Spectral measurements of surface hoar crystals

Journal of Glaciology, 2017
Surface hoar crystals are common on the surface of mountain snow covers. Once buried, layers of large plate-shaped surface hoar crystals are prone to releasing dangerous snow-slab avalanches. Since snow microstructure influences the optical properties of
SIMON HORTON, BRUCE JAMIESON
doaj   +1 more source

Microporous Microgel Assemblies Facilitating the Recruitment and Osteogenic Differentiation of Progenitor Cells for Bone Regeneration

Advanced Functional Materials, Volume 36, Issue 31, 16 April 2026.
There is a significant need for biomaterials with well‐defined stability and bioactivity to support tissue regeneration. In this study, we developed a tunable microgel platform that enables the decoupling of stiffness from porosity, thereby promoting bone regeneration.
Silvia Pravato, Haishuo Guan, Bianca M. Carrara, Mira Jacobs, Matteo Monticelli, Lukas Moser, Thomas Moragues, Andrew J. deMello, Tomaso Zambelli, Martin Ehrbar   +9 more
wiley   +1 more source

Development of a handheld integrating sphere snow grain sizer (HISSGraS)

Annals of Glaciology
We developed a Handheld Integrating Sphere Snow Grain Sizer (HISSGraS) for field use to measure the specific surface area (SSA) of snow. In addition to snow samples, HISSGraS can directly measure snow surfaces and snow pit walls.
Teruo Aoki, Akihiro Hachikubo, Motoshi Nishimura, Masahiro Hori, Masashi Niwano, Tomonori Tanikawa, Konosuke Sugiura, Ryo Inoue, Satoru Yamaguchi, Sumito Matoba, Rigen Shimada, Hiroshi Ishimoto, Jean-Charles Gallet   +12 more
doaj   +1 more source

On the compressive strength of weak snow layers of depth hoar

Journal of Glaciology
We determined the compressive strength of weak layers of faceted crystals and depth hoar using artificially grown samples with a wide range of microstructural morphologies in a cold laboratory setup.
Jakob Schöttner, Melin Walet, Philipp Rosendahl, Philipp Weissgraeber, Valentin Adam, Benjamin Walter, Florian Rheinschmidt, Henning Löwe, Jürg Schweizer, Alec van Herwijnen   +9 more
doaj   +1 more source

Simulation of Arctic snow microwave emission in surface-sensitive atmosphere channels [PDF]

The Cryosphere
Accurate simulations of snow emission in surface-sensitive microwave channels are needed to separate snow from atmospheric information essential for numerical weather prediction.
M. Sandells, N. Rutter, K. Wivell, R. Essery, S. Fox, C. Harlow, G. Picard, A. Roy, A. Royer, P. Toose   +9 more
doaj   +1 more source

Observing the effect of morphology on the elastic properties of new snow using a non-contacting laser ultrasound system

Journal of Glaciology
Quantifying micromechanical and microstructural properties of snow is crucial, as they control bulk thermal, electrical and mechanical properties.
James Chris McCaslin, Thomas Dylan Mikesell, Hans-Peter Marshall, Zoe Courville   +3 more
doaj   +1 more source

Analysis of QualitySpec Trek Reflectance from Vertical Profiles of Taiga Snowpack

Geosciences, 2018
Snow microstructure is an important factor for microwave and optical remote sensing of snow. One parameter used to describe it is the specific surface area (SSA), which is defined as the surface-area-to-mass ratio of snow grains.
Leena Leppänen, Anna Kontu
doaj   +1 more source