A laboratory volcano (7): application to Kilauea
Gas flux in magma chamber Qg:
gas flux = f(a, d, area)
Qg
=
(1 - a) d2 (rliq - rgas) g
18 m
a
S
a: gas volume fraction in reservoir
S: area of magma
chamber (m2)
m: viscosity (Pa.s)
rliq: liquid density (kg.m-3)
d: bubble diameter
(m)
g: gravity
Qg: gas flux (m3/s)
from bubble rise velocity vb :
Qg = a vb S