Results 71 to 80 of about 2,322 (261)

Experimental study on the unconfined apparent shear strength of compacted snow

Journal of Glaciology
To address the scarcity of data on compacted snow shear damage under complex conditions, unconfined shear tests were conducted in Northeast China. This study examined apparent shear strength variations with density (300–550 kg·m−3), temperature (−17.4°C ...
Jie Wei, Peng Lu, Hongwei Han, Qingkai Wang, Xuewei Li, Miao Yu, Puzhen Huo, Zhijun Li   +7 more
doaj   +1 more source

Snow particle motion in process of cornice formation [PDF]

The Cryosphere
Snow cornices are a common snow pattern in cold regions, and their fracture and collapse can easily trigger avalanches. Despite numerous observations and experimental simulations on their formation process, the microscopic mechanism of their initial ...
H. Yu, H. Yu, L. Guang, B. Walter, J. Huang, N. Huang, M. Lehning, M. Lehning   +7 more
doaj   +1 more source

A talus rock glacier in Nantlle Valley, North Wales

Journal of Quaternary Science, EarlyView.
ABSTRACT Landforms comprising mixtures of fine and coarse sediment and deposited during late glacial times are ubiquitous in the British mountains. In many cases, their interpretation has often proved contentious; as a result, the non‐generic term discrete debris accumulations (DDA) has been used to describe them and, over the last 50 years, some have ...
Stephan Harrison, Ed Anderson
wiley   +1 more source

New Schmidt hammer exposure‐age dating calibrations for the Last Glacial Termination in NW Scotland: Development and application to undated Torridon Group sandstone surfaces in Wester Ross

Journal of Quaternary Science, EarlyView.
ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry, David Small, Oliver T. Bartlett, Jonathan Newitt   +3 more
wiley   +1 more source

Assessing plant water status: Part 2 – Non‐destructive and remote sensing approaches

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Precise, real time and non‐destructive assessment of plant water status is important for advancing plant physiological understanding, optimizing water usage, improving crop resilience and supporting precision agriculture in the face of increasingly variable climatic conditions.
Naila Farooq, Bo Zhang, Bastian Leander Franzisky, Tasawer Abbas, Jochen Taiber, Martin Koch, Ian C Dodd, Christoph‐Martin Geilfus   +7 more
wiley   +1 more source

Particle tracking in snow avalanches with in situ calibrated inertial measurement units

Annals of Glaciology
In the course of an artificially triggered avalanche, a particle tracking procedure is combined with supplementary measurements, including Global Navigation Satellite System (GNSS) positioning, terrestrial laser ...
Robert Winkler, Michael Neuhauser, Rene Neurauter, Felix Erlacher, Walter Steinkogler, Jan-Thomas Fischer   +5 more
doaj   +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

Validating antler‐ and movement‐based estimates of caribou reproduction using video camera collars Validation des estimations de la reproduction du caribou basées sur la rétention des bois et  sur le déplacement à l'aide de colliers‐caméras

The Journal of Wildlife Management, EarlyView.
We used GPS video camera collar data from barren‐ground caribou in the Porcupine and Western Arctic herds to validate antler‐ and movement‐based methods for estimating annual reproductive metrics. Antler retention was highly accurate for estimating parturition, but the movement methods we tested performed marginally for estimating parturition and ...
Heather E. Johnson, Emily C. Racenet, Gabrielle L. Coulombe, Matthew D. Cameron, Kyle Joly, Martin Kienzler, Michael J. Suitor   +6 more
wiley   +1 more source

Testing the Strength of Buried Surface Hoar Weak Layers Under Combined Compression and Shear Loading

Geophysical Research Letters
We experimentally determined the multiaxial strength of weak layers of buried surface hoar using displacement‐controlled tests under combined normal and shear loading on a custom testing machine.
Jakob Schöttner, Marcel Piecuch, Philipp L. Rosendahl, Melin Walet, Valentin Adam, Philipp Weißgraeber, Jürg Schweizer, Alec vanHerwijnen   +7 more
doaj   +1 more source

Possible erosion mechanisms in snow avalanches

Annals of Glaciology, 2004
AbstractSnow erosion and entrainment processes in avalanches are classified according to their mechanisms, the flow regimes in which they occur, and their spatial position within the avalanche. Simple, but process-specific, models are proposed for erosion by impacts, abrasion, plowing and blasting.
Gauer, Peter, Issler, Dieter
openaire   +2 more sources