NUMERICAL MODELING OF THE QUASISTATIONARY
REGIME OF ERUPTION OF A VOLCANO AT THE
INITIAL STAGE

N. A. Kudryashov,a G. S. Romanov,b  
and A. F. Shevyakova 

UDC 519.6

Under the assumption of axial symmetry, the quasistationary 
phase of the initial stage of a volcanic eruption is modeled. The 
constructed model allows calculation of the distribution of the regimes 
of magma flow in the volcanic channel and the quasistationary distribution 
of a suspension of gas-dust volcanic ejections in the atmosphere from 
the prescribed parameters of the magmatic source. The model can be 
used for evaluation of the parameters of the atmosphere above an erupting 
volcano, the height of a dust column during the quasistationary phase 
of eruption, the thickness of the layer of ash fallen on the earth, 
and other forms of action of volcanic eruptions on the environment.

aMoscow Engineering-Physics Institute (Technical University), Moscow, Russia; 
bA. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of
Belarus, Minsk, Belarus. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, 
No. 4, pp. 46-52, July-August, 2003. Original article submitted November 13, 2002.