David Amitrano
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View article: Rockfall Forecasting using Ensemble Deep Learning and Temporal Gradient-Based Explanations
Rockfall Forecasting using Ensemble Deep Learning and Temporal Gradient-Based Explanations Open
International audience
View article: Guidelines for the FAIRt publication of Terrestrial Laser Scanner Data in Geomorphic Research
Guidelines for the FAIRt publication of Terrestrial Laser Scanner Data in Geomorphic Research Open
The increasing dissemination of data from Terrestrial or Permanent Laser Scanning (TLS/PLS) topographic surveys in geomorphology requires the establishment of clear recommendations for their publication. The work presented here proposes a …
View article: Rockfall detection using lidar point clouds: identification of geometric distortions during acquisition and proposed processing to enable a low detection threshold
Rockfall detection using lidar point clouds: identification of geometric distortions during acquisition and proposed processing to enable a low detection threshold Open
The C2R-IA project (www.c2r-ia.fr) is aimed to better account for the influence of weather conditions on the level of rockfall hazards and to anticipate temporary increases in hazard levels during storms and other specific weather conditio…
View article: Enhancing Rockfall Detection Using Permanent LiDAR Scanner (PLS) Data and Automated Workflows at St. Eynard Cliff (Grenoble, France)
Enhancing Rockfall Detection Using Permanent LiDAR Scanner (PLS) Data and Automated Workflows at St. Eynard Cliff (Grenoble, France) Open
The ANR C2R-IA (anrc2ria.fr) project aims to develop reliable decision-making tools for dynamic rockfall risk management, such as restricting access to hazardous zones during critical periods. To achieve this, we aim to develop a predictiv…
View article: Effect of quenched heterogeneity on creep lifetimes of disordered materials
Effect of quenched heterogeneity on creep lifetimes of disordered materials Open
We revisit the problem of describing creep in heterogeneous materials by an effective temperature by considering more realistic (and complex) non-mean-field elastic redistribution kernels. We show first, from theoretical considerations, th…
View article: Effect of quenched heterogeneity on creep lifetimes of disordered materials
Effect of quenched heterogeneity on creep lifetimes of disordered materials Open
We revisit the problem of describing creep in heterogeneous materials by an effective temperature by considering more realistic (and complex) non-mean-field elastic redistribution kernels. We show first, from theoretical considerations, th…
View article: History effects in the creep of a disordered brittle material
History effects in the creep of a disordered brittle material Open
International audience
View article: Logarithmic versus Andrade's transient creep: Role of elastic stress redistribution
Logarithmic versus Andrade's transient creep: Role of elastic stress redistribution Open
International audience
View article: Transient Brittle Creep Mechanism Explains Early Postseismic Phase of the 2011 Tohoku‐Oki Megathrust Earthquake: Observations by High‐Rate GPS Solutions
Transient Brittle Creep Mechanism Explains Early Postseismic Phase of the 2011 Tohoku‐Oki Megathrust Earthquake: Observations by High‐Rate GPS Solutions Open
The early stage of the postseismic phase is characterized by a large deformation rate. Its analysis is thus key to decipher the role played by different mechanisms (afterslip and viscoelasticity) at various time scales. Here, we process GP…
View article: History effects in the creep of a disordered brittle material
History effects in the creep of a disordered brittle material Open
We study the creep behavior of a disordered brittle material (concrete) under successive loading steps, using acoustic emission and ultrasonic sensing to track internal damage. The primary creep rate is observed to follow a (Omori-type) po…
View article: Logarithmic vs Andrade's transient creep: the role of elastic stress redistribution
Logarithmic vs Andrade's transient creep: the role of elastic stress redistribution Open
Creep is defined as time-dependent deformation and rupture processes taking place within a material subjected to a constant applied stress smaller than its athermal, time-independent strength. This time-dependence is classically attributed…
View article: Transient Brittle Creep mechanism explains early postseismic phase of the 2011 Tohoku-Oki megathrust earthquake: observations by high-rates GPS solutions
Transient Brittle Creep mechanism explains early postseismic phase of the 2011 Tohoku-Oki megathrust earthquake: observations by high-rates GPS solutions Open
The early stage of the postseismic phase is characterized by a large deformation rate. Its analysis is thus key to decipher the role played by different mechanisms (afterslip and viscoelasticity) at various time scales. Here, we process GP…
View article: Seismic Analysis of the Detachment and Impact Phases of a Rockfall and Application for Estimating Rockfall Volume and Free‐Fall Height
Seismic Analysis of the Detachment and Impact Phases of a Rockfall and Application for Estimating Rockfall Volume and Free‐Fall Height Open
We analyzed 21 rockfalls that occurred in limestone cliffs of the Chartreuse Massif (French Alps). These rockfalls were detected both by Terrestrial Laser Scanning or photogrammetry and by a local seismological network. The combination of …
View article: From plastic flow to brittle fracture: Role of microscopic friction in amorphous solids
From plastic flow to brittle fracture: Role of microscopic friction in amorphous solids Open
Plasticity in soft amorphous materials typically involves collective deformation patterns that emerge on intense shearing. The microscopic basis of amorphous plasticity has been commonly established through the notion of "Eshelby"-type eve…
View article: Damage and Strain Localization Around a Pressurized Shallow‐Level Magma Reservoir
Damage and Strain Localization Around a Pressurized Shallow‐Level Magma Reservoir Open
Structures developing above long‐term growing shallow‐level magma reservoirs, such as resurgent domes, may contain information on the reservoir itself. To understand the formation of such tectonic features, we have investigated the deforma…
View article: Compressive Failure as a Critical Transition: Experimental Evidence and Mapping onto the Universality Class of Depinning
Compressive Failure as a Critical Transition: Experimental Evidence and Mapping onto the Universality Class of Depinning Open
Acoustic emission (AE) measurements performed during the compressive loading of concrete samples with three different microstructures (aggregate sizes and porosity) and four sample sizes revealed that failure is preceded by an acceleration…
View article: Towards a standard typology of endogenous landslide seismic sources
Towards a standard typology of endogenous landslide seismic sources Open
The objective of this work is to propose a standard classification of seismic signals generated by gravitational processes and detected at close distances (1 Hz) where most of the seismic energy is recorded at the 1 km sensor to source dis…
View article: Compressive failure as a critical transition: Experimental evidences and universality
Compressive failure as a critical transition: Experimental evidences and universality Open
Acoustic emission (AE) measurements performed during the compressive loading of concrete samples with three different microstructures (aggregate sizes and porosity) and four sample sizes revealed that failure is preceded by an acceleration…
View article: Damage-based long term modelling of a large alpine rock slope
Damage-based long term modelling of a large alpine rock slope Open
Alpine rock slopes evolve over long time in changing morpho-climatic settings. In suitable topographic and geomechanical conditions, weakening and increased hydraulic conductivity associated to rock mass damage under gravitational load can…
View article: Towards a standard typology of endogenous landslide seismic sources
Towards a standard typology of endogenous landslide seismic sources Open
In the last decade, numerous studies focused on the analysis of seismic waves generated by Earth surface processes such as landslides. The installation of seismometers on unstable slopes revealed a variety of seismic signals suspected to b…
View article: Damage‐Based Time‐Dependent Modeling of Paraglacial to Postglacial Progressive Failure of Large Rock Slopes
Damage‐Based Time‐Dependent Modeling of Paraglacial to Postglacial Progressive Failure of Large Rock Slopes Open
Large alpine rock slopes undergo long‐term evolution in paraglacial to postglacial environments. Rock mass weakening and increased permeability associated with the progressive failure of deglaciated slopes promote the development of potent…
View article: Fiber bundle model under fluid pressure
Fiber bundle model under fluid pressure Open
Internal fluid pressure often plays an important role in the rupture of brittle materials. This is a major concern for many engineering applications and for natural hazards. More specifically, the mechanisms through which fluid pressure, a…