The contribution of experimental volcanology to the study of the physics of eruptive processes, and related scaling issues: A review
O Roche, G Carazzo - Journal of Volcanology and Geothermal Research, 2019 - Elsevier
The experimental approach has become a major tool increasingly used by volcanologists in
recent decades to investigate the physics of eruptive processes in complement to field and …
recent decades to investigate the physics of eruptive processes in complement to field and …
On the run-out distance of geophysical gravitational flows: Insight from fluidized granular collapse experiments
We present the results of laboratory experiments on the emplacement of gravitational
granular flows generated from axisymmetrical release of columns of fine (~ 75μm) or coarse …
granular flows generated from axisymmetrical release of columns of fine (~ 75μm) or coarse …
Experimental observations of water‐like behavior of initially fluidized, dam break granular flows and their relevance for the propagation of ash‐rich pyroclastic flows
The physics of ash‐rich pyroclastic flows were investigated through laboratory dam break
experiments using both granular material and water. Flows of glass beads of 60–90 μm in …
experiments using both granular material and water. Flows of glass beads of 60–90 μm in …
Pore fluid pressure and internal kinematics of gravitational laboratory air‐particle flows: Insights into the emplacement dynamics of pyroclastic flows
The emplacement dynamics of pyroclastic flows were investigated through noninvasive
measurements of the pore fluid pressure in laboratory air‐particle flows generated from the …
measurements of the pore fluid pressure in laboratory air‐particle flows generated from the …
Mechanics of granular column collapse in fluid at varying slope angles
This paper investigates the effect of initial volume fraction on the runout characteristics of
collapse of granular columns on slopes in fluid. 2-D sub-grain scale numerical simulations …
collapse of granular columns on slopes in fluid. 2-D sub-grain scale numerical simulations …
Experimental study of dense pyroclastic density currents using sustained, gas-fluidized granular flows
We present the results of laboratory experiments on the behaviour of sustained, dense
granular flows in a horizontal flume, in which high-gas pore pressure was maintained …
granular flows in a horizontal flume, in which high-gas pore pressure was maintained …
Effects of pore pressure in pyroclastic flows: numerical simulation and experimental validation
Pyroclastic flows are mixtures of volcanic gases and particles that can be very hazardous
owing to their fluid‐like behavior. One possible mechanism to explain this behavior is the …
owing to their fluid‐like behavior. One possible mechanism to explain this behavior is the …
Pore fluid pressure diffusion in defluidizing granular columns
S Montserrat, A Tamburrino, O Roche… - Journal of Geophysical …, 2012 - Wiley Online Library
Pore fluid pressure variations play an important role in the motion of natural granular flows
like debris and pyroclastic flows. Pore pressure in a defluidizing air‐particle bed was …
like debris and pyroclastic flows. Pore pressure in a defluidizing air‐particle bed was …
Topographic controls on pyroclastic density current dynamics: insight from 18 May 1980 deposits at Mount St. Helens, Washington (USA)
Our ability to interpret the deposits of pyroclastic density currents (PDCs) is critical for
understanding the transport and depositional processes that control PDC dynamics. This …
understanding the transport and depositional processes that control PDC dynamics. This …
Autofluidization of pyroclastic flows propagating on rough substrates as shown by laboratory experiments
C Chedeville, O Roche - Journal of Geophysical Research …, 2014 - Wiley Online Library
This study investigates the influence of the substrate surface roughness on the emplacement
mechanisms of pyroclastic flows. We carried out laboratory experiments on gravitational …
mechanisms of pyroclastic flows. We carried out laboratory experiments on gravitational …