Results 21 to 30 of about 1,264,049 (211)

Micro-mechanical insights into the dynamics of crack propagation in snow fracture experiments

open access: yesScientific Reports, 2021
Dry-snow slab avalanches result from crack propagation in a highly porous weak layer buried within a stratified and metastable snowpack. While our understanding of slab avalanche mechanisms improved with recent experimental and numerical advances ...
Grégoire Bobillier   +5 more
doaj   +1 more source

The Chernobyl Reference Horizon (?) in the Greenland Ice Sheet [PDF]

open access: yes, 1989
Published reports of the presence of radioactive debris from the Chernobyl reactor accident in snow on the Greenland ice sheet raised the strong prospect that such debris might constitute a valuable time stratigraphic marker all over the ice sheet. Large
Dibb, Jack E.
core   +2 more sources

Reconstruction of four-dimensional rockfall trajectories using remote sensing and rock-based accelerometers and gyroscopes [PDF]

open access: yesEarth Surface Dynamics, 2019
This work focuses on the in-depth reconstruction of the full set of parameters of interest in single-block rockfall trajectories. A comprehensive understanding of rockfall trajectories holds the promise to enhance the application of numerical models for ...
A. Caviezel   +9 more
doaj   +1 more source

Estimating snow cover from publicly available images [PDF]

open access: yes, 2015
In this paper we study the problem of estimating snow cover in mountainous regions, that is, the spatial extent of the earth surface covered by snow. We argue that publicly available visual content, in the form of user generated photographs and image ...
Camerada, Alessandro   +3 more
core   +2 more sources

The RHOSSA campaign: multi-resolution monitoring of the seasonal evolution of the structure and mechanical stability of an alpine snowpack [PDF]

open access: yesThe Cryosphere, 2020
The necessity of characterizing snow through objective, physically motivated parameters has led to new model formulations and new measurement techniques.
N. Calonne   +9 more
doaj   +1 more source

From research to national expansion: 20 years' experience of community-based management of childhood pneumonia in Nepal

open access: yesBulletin of the World Health Organization
PROBLEM: Pneumonia is a leading cause of mortality of children aged under five in Nepal. Research conducted by John Snow Inc. in the 1980s determined that pneumonia case management by community-based workers decreased under-five mortality by 28 ...
P Dawson   +5 more
doaj   +1 more source

A review of Central Asian glaciochemical data [PDF]

open access: yes, 1990
The glaciers of central Asia provide suitable locations from which to recover continuous, high-resolution glaciochemical records on a continental scale.
Mayewski, Paul A   +2 more
core   +3 more sources

Strengthening person-centered care through quality improvement: a mixed-methods study examining implementation of the Person-Centered Care Assessment Tool in Zambian health facilities

open access: yesHIV Research & Clinical Practice
Introduction Person-centered care (PCC) is considered a fundamental approach to address clients’ needs. There is a dearth of data on specific actions that HIV treatment providers identify as priorities to strengthen PCC.
Amy Casella   +7 more
doaj   +1 more source

Micromechanical modeling of snow failure [PDF]

open access: yesThe Cryosphere, 2020
Dry-snow slab avalanches start with the formation of a local failure in a highly porous weak layer underlying a cohesive snow slab. If followed by rapid crack propagation within the weak layer and finally a tensile fracture through the slab, a slab ...
G. Bobillier   +7 more
doaj   +1 more source

Multiscale assimilation of Advanced Microwave Scanning Radiometer-EOS snow water equivalent and Moderate Resolution Imaging Spectroradiometer snow cover fraction observations in northern Colorado [PDF]

open access: yes, 2012
Eight years (2002–2010) of Advanced Microwave Scanning Radiometer–EOS (AMSR-E) snow water equivalent (SWE) retrievals and Moderate Resolution Imaging Spectroradiometer (MODIS) snow cover fraction (SCF) observations are assimilated separately or jointly ...
Arsenault, Kristi R   +6 more
core   +2 more sources

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