On the influence of topography on plume dispersal

1981 ◽  
Vol 21 (2) ◽  
pp. 137-157 ◽  
Author(s):  
P. J. Mason ◽  
R. I. Sykes
Keyword(s):  
Plume Dispersal

Numerical Simulations of Volcanic Ash Plume Dispersal from Kelud Volcano in Indonesia on February 13, 2014

2016 ◽  
Vol 11 (1) ◽  
pp. 31-42 ◽  
Author(s):  
Hiroshi L. Tanaka ◽  
◽  
Masato Iguchi ◽  
Setsuya Nakada ◽  
◽  
...  
Keyword(s):  
Volcanic Ash ◽  
Model Simulation ◽  
Ground Deformation ◽  
Dispersion Model ◽  
Danger Zone ◽  
2014 Eruption ◽  
Southern Half ◽  
Ash Dispersion ◽  
Plume Dispersal ◽  
Ash Plume

In order to evaluate airborne ash densities, a real-time volcanic ash dispersion model, PUFF, is applied to the February 13, 2014 eruption of Kelud volcano in Indonesia. The emission rate of the ash mass from the vent is estimated based on the empirical formulae tested at Sakurajima volcano using ground deformation and seismic monitoring data.According to the result of the PUFF model simulation, the circular shape of the anvil ash cloud 17 km in height extends during the first two hours over a radius of 200 km from the volcano. The core region within 50 km of the volcano shows an airborne ash density of 1000 mg/m3. Three hours after the initial eruption, the area with 100 mg/m$^bm 3$ extends 300 km to the west, covering Yogyakarta Airport. Due to low-level winds, Surabaya Airport to the northeast also becomes part of the area with 100 mg/m3. The result of the ash plume dispersal 7 hours into the eruption indicates that the entire island of Java is in the danger zone for commercial airliners, as ash exceeds 10 mg/m3. Although satellite images show that the ash plume is located only in the southern half of western Java, the simulation results quantitatively indicate much wider extents of the aircraft danger zone.

Modelling atmospheric effects on performance and plume dispersal from natural draft wet cooling towers

2015 ◽  
Vol 136 ◽  
pp. 151-164 ◽  
Author(s):  
A. Chahine ◽  
P. Matharan ◽  
D. Wendum ◽  
L. Musson-Genon ◽  
R. Bresson ◽  
...  
Keyword(s):  
Atmospheric Effects ◽  
Cooling Towers ◽  
Natural Draft ◽  
Plume Dispersal

Statistical assessment and modeling of the effects of weather conditions on H2S plume dispersal from Icelandic geothermal power plants

Geothermics ◽  
2013 ◽  
Vol 45 ◽  
pp. 31-40 ◽  
Author(s):  
Throstur Thorsteinsson ◽  
Julia Hackenbruch ◽  
Einar Sveinbjörnsson ◽  
Thorsteinn Jóhannsson
Keyword(s):  
Power Plants ◽  
Weather Conditions ◽  
Statistical Assessment ◽  
Plume Dispersal ◽  
Geothermal Power
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