搜索结果: 1-11 共查到“理学 Pyroclastic”相关记录11条 . 查询时间(0.039 秒)
Assessment of motion-induced fluidization of dense pyroclastic gravity currents
pyroclastic flow fluidization gravity current
2015/9/10
The paper addresses some fundamental aspects of the dynamics of dense granular flows down inclines relevant
to pyroclastic density currents. A simple mechanistic framework is presented to analyze the...
Surface roughness of pyroclastic deposits at Mt. Etna by 3D laser scanning
surface roughness pyroclastic deposits Laser 3D
2015/9/1
The terrestrial 3D Laser Scanning technique has been applied to analyse the surface roughness of pyroclastic deposits on volcanic surfaces at Mt. Etna. This technique allowed the construction of high ...
New developments in the analysis of column-collapse pyroclastic density currents through numerical simulations of multiphase flows
column-collapse pyroclastic density currents numerical simulations of multiphase flows
2015/1/4
A granular multiphase model has been used to evaluate the action of differently sized particles on the dynamics of fountains and associated pyroclastic density currents. The model takes into account t...
New developments in the analysis of column-collapse pyroclastic density currents through numerical simulations of multiphase flows
column-collapse pyroclastic density multiphase fl ows
2015/1/4
A granular multiphase model has been used to
evaluate the action of differently sized particles on the dynamics of fountains and associated pyroclastic density currents.
Pyroclastic Flow from Soufrière Hills Volcano, Montserrat: Solid Block Model
Landslide Dynamics Solid Block Model Soufrière Hills Volcano
2013/3/7
The solid block model is applied to describe the motion of the pyroclastic flow under the joint action of gravity and Coulomb friction. Special attention is paid to characteristics of the pyroclastic ...
Observations and modelling of soil slip-debris flow initiation processes in pyroclastic deposits:the Sarno 1998 event
Observations modelling soil slip-debris flow initiation processes pyroclastic deposits
2009/12/11
Pyroclastic soils mantling a wide area of the Campanian Apennines are subjected to recurrent instability phenomena. This study analyses the 5 and 6 May 1998 event which affected the Pizzo d’Alvano (Ca...
Fall-experiments on Merapi basaltic andesite and constraints on the generation of pyroclastic surges
Fall-experiments Merapi basaltic andesite pyroclastic surges
2009/10/22
We have performed fall-experiments with basaltic andesite rock samples from Merapi volcano, using an apparatus designed to analyze samples heated up to 850°C. Relative pressure changes during impact a...
Seismic characterization of pyroclastic flow activity at Soufrière Hills Volcano,Montserrat,8 January 2007
Seismic characterization pyroclastic flow activity Soufrière Hills Volcano
2009/12/30
A partial dome collapse with concurrent pyroclastic flow (PF) activity occurred at Soufrière Hills Volcano (SHV), Montserrat on 8 January 2007. Pyroclastic density currents were observed to propagate ...
Residential building and occupant vulnerability to pyroclastic density currents in explosive eruptions
Residential building occupant vulnerability pyroclastic density explosive eruptions
2009/12/30
A major hazard during the eruption of explosive volcanoes is the formation of pyroclastic density currents (PDCs). Casualties and physical building damage from PDCs are caused by the temperature, pres...
Fall-experiments on Merapi basaltic andesite and constraints on the generation of pyroclastic surges
Fall-experiments Merapi basaltic andesite constraints pyroclastic surges
2010/9/28
We have performed fall-experiments with basaltic andesite rock samples from Merapi volcano, using an apparatus designed to analyze samples heated up to 850°C. Relative pressure changes during impact a...
Zeolites in Pre-Caldera Pyroclastic Rocks of the Santorini Volcano, Aegean Sea, Greece
Clinoptilolite Diagenesis Mordenite Pyroclastic Tuff Zeolite
2012/1/6
The vitric matrix of pre-caldera acid tuff and tuff breccia of the Santorini volcano, Aegean Sea, Greece has been generally replaced by one or more of the following authigenic minerals: K-rich and (K,...