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Formation processes of the 1909 Tarumai and the 1944 Usu lava domesin Hokkaido,Japan
lava domes Tarumai volcano Usu volcano squeeze of magma growth rate of domes Hagen-Poiseuille's Law
2015/9/11
The formation of the two particular lava domes in Hokkaido, Japan is described and interpreted mainly from geophysical viewpoints. The 1909 eruption of Tarumai volcano was not violent but produced a l...
Growth rates of lava domes with respect to viscosity of magmas
lava domes squeeze of magma growth rates of domes Hagen-Poiseuille Law macroscopic viscosity
2015/9/10
In the discussion of lava dome formation, viscosity of magma plays an important role. Measurements of viscosity
of magmas in field and laboratory are briefly summarized. The types of lava dome emplac...
The flank eruption history of Etna (1610-2006) as a constraint on lava flow hazard
flow hazard Etna
2015/8/27
Data of the flank eruptions of Etna from over the last 400 years were extracted from the new geological map for the lava flow extensions and vent positions, and from the catalogs of historical eruptio...
Cooling of a channeled lava flow with non-Newtonian rheology: crust formation and surface radiance
Rheology Magmas Thermodynamics Lava flow Effusion rate
2015/8/27
We present here the results from dynamical and thermal models that describe a channeled lava flow as it cools by radiation. In particular, the effects of power-law rheology and of the presence of bend...
DOWNFLOW code and LIDAR technology for lava flow analysis and hazard assessment at Mount Etna
DOWNFLOW code LIDAR technology
2015/8/27
The use of a lava-flow simulation (DOWNFLOW) probabilistic code and airborne light detection and ranging (LIDAR) technology are combined to analyze the emplacement of compound lava flow fields at Moun...
Numerical simulation of lava flow using a GPU SPH model
GPGPU modeling HPC SPH hazard lava
2015/8/27
A smoothed particle hydrodynamics (SPH) method for lava-flow modeling was implemented on a graphical processing unit (GPU) using the compute unified device architecture (CUDA) developed by NVIDIA. Thi...
Retrospective validation of a lava-flow hazard map for Mount Etna volcano
Lava flow paths MAGFLOW simulator fitting scores temporal validation
2015/8/27
This report presents a retrospective methodology to validate a long-term hazard map related to lava-flow invasion at Mount Etna, the most active volcano in Europe. A lava-flow hazard map provides the ...
Eruption column height estimation of the 2011-2013 Etna lava fountains
Electromagnetic noise by railways Man-made electromagnetic noise Quiet days noise analysis
2015/8/17
In this paper, we use calibrated images collected by the video-surveillance system of the Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo, to retrieve the height of the eruption col...
Lava Geochemistry as a Probe into Crustal Formation at the East Pacific Rise
Lava Geochemistry Crustal Formation East Pacific Rise
2015/7/14
Basalt lavas comprise the greatest volume of volcanic rocks on Earth, and most of them erupt along the world's mid-ocean ridges (MORs). These MOR basalts (MORBs) are generally thought to be relatively...
LAVA FLOW MONITORING USING TET-1 SATELLITE
Volcanic Thermal Anomalies Lava Flow Stromboli Small Satellites
2015/5/7
Lava flow monitoring using satellites provides information on the temporal evolution of volcanic activity. It is usually done using metrological satellites because of the lack of more suitable satel...
Petit-spot lava fields off the central Chile trench induced by plate flexure
hpetit-spot Chile trench alkali-basalt Nazca plate Juan Fernández hotspot
2017/4/11
In 2009, petit-spot submarine volcanoes were discovered off the oceanward slope of the central Chile trench, offshore
from Valparaiso, Chile, at around 33°S. Ar–Ar dating of mugearite and alkali-basa...
Experimental Study on the Mechanics Character of Lava in the Area of Xujiaweizi
Rock mechanics Lithology Lava Experimental study
2009/12/3
The Xujiaweizi rift in the north of Songliao Basin is the largest volcanic gas reservoir in China, and because themechanics character of lava largely influences the production and development of the o...
Modelling lava flows by Cellular Nonlinear Networks (CNN):preliminary results
lava flows Cellular Nonlinear Networks (CNN) preliminary results
2009/11/9
The forecasting of lava flow paths is a complex problem in which temperature, rheology and flux-rate all vary with space and time. The problem is more difficult to solve when lava runs down a real top...
Response of Lake Kivu stratification to lava inflow and climate warming
Lake Kivu stratification lava inflow climate warming
2014/5/14
During the eruption of Nyiragongo Volcano in January 2002 about 106 m3 of lava entered Lake Kivu. The high concentrations of CO2 and CH4 dissolved in the deep waters of Lake Kivu raised serious concer...
Morphology and maturation of melt inclusions in quartz phenocrysts in afrom the Badlands rhyolite lava flow, southwestern Idaho
Morphology maturation of melt inclusions phenocrysts Badlands rhyolite lava flow southwestern Idaho
2012/4/5
Morphologiesofprimary rhyolitic meltinclusions in three successive populations of quartz phenocrysts in asinglevolcanic unit illustrate the changeofinclusion shape after trapping. The 14MaBadlandslava...