Results 51 to 60 of about 6,218 (231)

Optical determination of snow density via sub-surface scattering

Communications Physics
The physical properties of snow, such as its stiffness, reflectivity, and thermal conductivity, are critical components in feedback processes of the Earth’s system and useful proxies for various applications in environmental science, ranging from ...
Lars Mewes, Henning Löwe, Martin Schneebeli, Benjamin Walter   +3 more
doaj   +1 more source

Snow in a very steep rock face: accumulation and redistribution during and after a snowfall event

Frontiers in Earth Science, 2015
Terrestrial laser scanning was used to measure snow thickness changes (perpendicular to the surface) in a rock face. The aim was to investigate the accumulation and redistribution of snow in extremely steep terrain (>60°).
Christian Gabriel Sommer, Christian Gabriel Sommer, Michael eLehning, Michael eLehning, Rebecca eMott   +4 more
doaj   +1 more source

On the relation between avalanche occurrence and avalanche danger level [PDF]

The Cryosphere, 2020
In many countries with seasonally snow-covered mountain ranges warnings are issued to alert the public about imminent avalanche danger, mostly employing an ordinal, five-level danger scale.
J. Schweizer, C. Mitterer, F. Techel, A. Stoffel, B. Reuter, B. Reuter   +5 more
doaj   +1 more source

Proglacial lake records of Holocene glacier behaviour and catchment processes in Slettedalen, Northeast Greenland

Journal of Quaternary Science, EarlyView.
ABSTRACT Constraining Arctic catchment response to Holocene climate change is vital for understanding future environments. We present detailed sedimentological, geochemical and grain size end‐member analysis of two Holocene (~7.0 ka to present) lake sequences, S1 and S2, close to Zackenberg, Northeast Greenland.
Kathryn Adamson, Matt Carney, Stamatia Galata, Tom Bishop, Timothy Lane, Vikas Mackevicius, Rochelle Taylor   +6 more
wiley   +1 more source

Intercomparison of snow density measurements: bias, precision, and vertical resolution [PDF]

, 2016
Density is a fundamental property of porous media such as snow. A wide range of snow properties and physical processes are linked to density, but few studies have addressed the uncertainty in snow density measurements.
C. Fierz, M. Schneebeli, Rutter, Nick, Proksch, Martin, Fierz, Charles, M. Proksch, Schneebeli, Martin, N. Rutter   +7 more
core   +1 more source

A casting method using contrast-enhanced diethylphthalate for micro-computed tomography of snow

Journal of Glaciology, 2021
Casting snow is necessary to prevent metamorphism and deformation prior to X-ray micro-computed tomography (μCT) imaging. Current methods are insufficient for large-scale field sampling of snow due to safety considerations associated with the casting ...
Michael Lombardo, Martin Schneebeli, Henning Löwe   +2 more
doaj   +1 more source

Evaluating Testability of Permafrost Models Through Physical and Thermal Testing in Complex Mountain Terrain, Yukon, Canada

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Due to its subsurface nature, permafrost cannot be directly observed with the naked eye or optical remote sensing. Consequently, accurately describing its distribution and thermal state is challenging. This is especially true in vast, remote environments, where obtaining comprehensive field data is demanding or improbable.
Ria Nicholson, Philip P. Bonnaventure, Nick C. Noad, Madeleine C. Garibaldi, Rabecca Thiessen, Will Kochtitzky   +5 more
wiley   +1 more source

Mortality rates of the Alpine Chamois : the influence of snow-meteorological factors

, 2008
Especially for animals inhabiting alpine areas, winter environmental conditions can be limiting. Cold temperatures, hampered food availability and natural perils are just three of many potential threats that mountain ungulates face in winter ...
Jenny, H., Geiger, F., Jonas, T.
core   +1 more source

Strategies for Assessing Post‐Wildfire Geomorphic Resilience in Semiarid Rivers

River Research and Applications, EarlyView.
ABSTRACT We review and summarize diverse components of a catchment that can be monitored after wildfire to assess the geomorphic resilience of the river corridor in semiarid regions. We distinguish upland portions of river catchments from river corridors.
Ellen Wohl, Shayla Triantafillou, Alex Thornton‐Dunwoody, Connor Mertz, Katie Larkin, William Keenan, Steven Griffin, Dylan Davis, Lindsey Blehm   +8 more
wiley   +1 more source

Using Airborne Laser Scanning and Sentinel‐2 to Understand Subcanopy Light Regimes and Understory Diversity of Vascular Plants in Temperate Mountain Forests

Remote Sensing in Ecology and Conservation, EarlyView.
This study demonstrates that not just Airborne Laser Scanning, but also Sentinel‐2 can effectively estimate absolute canopy cover and canopy cover heterogeneity ‐ structural metrics that determine the subcanopy light regime, found to be linked to the vascular plant species richness in the understory of temperate mountain forests.
Felix Wieland‐Glasmann, Cornelius Senf, Kristin H. Braziunas, Rupert Seidl, Peter Annighöfer   +4 more
wiley   +1 more source