Table 2 Variables and parameters used in the simulations.

From: Long-lived compositional heterogeneities in magma chambers, and implications for volcanic hazard

E

Total Specific Energy

[Jkg−1]

 

J

diffusion flux

[kgm−2s−1]

 

T

temperature

[K]

 

Y

mass fraction

  

h

specific enthalpies

[Jkg−1]

 

p

pressure

[Pa]

 

q

heat flux

[Wm−2]

 

t

time

[s]

 

v

velocity

[ms−1]

 

x

mole fraction

  

μ

viscosity

[Pas]

 

ρ

density

[kgm−3]

 

σ

stress tensor

[Nm−2]

 

c p

specific heat at constant pressure

[Jkg−1K−1]

 

c v

specific heat at constant volume

[Jkg−1K−1]

 

D

mass diffusion coefficient

[m2s−1]

10−9

g

gravitational acceleration

[m/s2]

9.81

κ

thermal conductivity

[Wm−1K−1]

1.2