نتایج جستجو برای: rock avalanches

تعداد نتایج: 42846  

2006
A. Mangeney

Numerical simulation can provide a useful tool for investigating the dynamics of phenomena like rock avalanches, within realistic geological contexts and in the framework of a better risk assessment and decision making. Difficulties in numerical modelling of a heterogeneous moving mass are mainly linked to the simulation of the complex behaviour assumed by the mass during propagation. The numer...

Journal: :Earth surface dynamics 2021

Abstract. Rock avalanches produce exceptionally long run-outs that correlate with their rock volume. This relationship has been attributed to the size-dependent dynamic lowering of effective basal friction. However, it also observed similar volumes can span several orders magnitude, suggesting additional controlling factors. Here, we analyse analogue models avalanches, experiments designed test...

Journal: :Geosciences 2022

Gravitational mass movements such as rockfalls, landslides, rock avalanches, or debris flows are increasingly endangering settlement areas and infrastructure facilities in the Alpine region a result of climate change. An essential component counteracting dangers events is construction suitable protective structures. However, dimensioning these structures requires in-depth knowledge impact proce...

Journal: :Frontiers in Earth Science 2022

Travel distance is a significant indicator for evaluating the mobility of rock avalanches and usually used to identify approximate delineation potentially endangered regions. The deflection-type avalanche typical laterally confined characterized by obvious changes in travel path. In this study, we selected that occurred Wenchuan earthquake area as research object statistically analyzed 54 colle...

Journal: :Geomorphology 2023

The frequency of large supraglacial landslides (rock avalanches) occurring in glacial environments is thought to be increasing due feedbacks with climate warming and permafrost degradation. However, it difficult (i) test this; (ii) establish cause–effect relationships; (iii) determine associated lag-times, both temporal spatial biases detection rates. Here we applied the Google Earth Engine deb...

Journal: :Geosciences 2022

Rock avalanches and landslides lead to gravitational flow into their runout areas, which poses increasing danger settlement areas infrastructure in the Alpine region as a result of climate change. In recent years, significant increase extreme events has been registered Alps due These changes threat have resulted need for construction sustainable protective structures. Many structures are rigid,...

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