Results 51 to 60 of about 725,140 (236)

Activation of rock avalanches in the Central Caucasus and their impact on the dynamics of glaciers and debris flows

open access: yesЛëд и снег, 2020
We analyzed multi-time satellite images of the Central Caucasus glacial zone and interpreted more than thirty rock avalanche events in the 21st century with a total damage area of more than 25 km2 (including the collapse zone of the Kolka Glacier ...
M. D. Dokukin   +4 more
doaj   +1 more source

Brief communication: A ~50 Mm3 ice-rock avalanche on 22 March 2021 in the Sedongpu valley, southeastern Tibetan Plateau

open access: yes, 2021
. On 22 March 2021, a ~50 M m3  ice-rock avalanche occurred from 6500 m asl in the Sedongpu basin, southeastern Tibet. The avalanche transformed into a highly mobile flow which temporarily blocked the Yarlung Tsangpo river.
Chuanxi Zhao   +8 more
semanticscholar   +1 more source

A talus rock glacier in Nantlle Valley, North Wales

open access: yesJournal 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

Zero‐Dimensional Perovskite‐Inspired Scintillator‐Based High‐Radiation‐Resistant Radionuclide Analyzer Free From Irreversible Degradation

open access: yesLaser &Photonics Reviews, EarlyView.
A zero‐dimensional perovskite‐inspired scintillator (Cs3Cu2I5) is developed as a high‐radiation‐resilient radionuclide analyzer capable of operating under extreme γ‐ray environments. Even after 200 kGy irradiation, the device fully restores its original spectroscopic performance through simple thermal annealing, demonstrating intrinsic defect ...
Jiwon Seo   +9 more
wiley   +1 more source

Kinematic Processes and Fragmentation Characteristics of Walai Rock Avalanche Landslide in Tibet

open access: yes工程科学与技术, 2020
Fragmentation is a very common phenomenon in high-speed long runout landslides, which is not only the basis of the granular flow hypothesis, but also related to energy dissipation and transmission of landslide.
Jian CHEN   +4 more
doaj  

Distinct element analysis for rock avalanche

open access: yesInternational Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1989
The mechanical behavior of a particle assembly is described based on Cundall's distinct element method which uses an explicit numerical scheme. Particle interaction was detected at every contact, and particle motion modelled for each particle in an assembly.We used Cundall's simulation method to study the mechanism of slope collapse.
Lucia CASAVERDE M.   +3 more
openaire   +2 more sources

Disposition Model for Permafrost Degradation in Mountainous Regions

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT Permafrost is a widespread thermal phenomenon in Arctic and high mountain regions that, in combination with steep terrain, exerts a key control on slope stability. Its degradation in response to climatic warming can modify the likelihood and timing of rockfall, debris flow and related mass movements. Robust information on the current state and
Peter Mani   +4 more
wiley   +1 more source

Estimating the travel distance of channelized rock avalanches using genetic programming method

open access: yesOpen Geosciences
A number of channelized rock avalanche events triggered by the Wenchuan earthquake resulted in considerable destruction. Identifying the factors affecting the travel distances of channelized rock avalanches and predicting their travel distances are ...
Zhang Yong   +3 more
doaj   +1 more source

Segregation‐Induced Flow Transitions in Rock‐Ice Mixtures: Implications for Rock‐Ice Avalanche Dynamics

open access: yesJournal of Geophysical Research - Earth Surface
Global climate change has been intensifying the scale and frequency of rock‐ice avalanches and similar catastrophic mass movements in high‐mountain regions.
Gordon G. D. Zhou   +6 more
semanticscholar   +1 more source

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

open access: yesPermafrost 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   +5 more
wiley   +1 more source

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