Linked from
The 14 pages that link to Volcanic gas monitoring, each with the reason it gives.
Volcanic ventRelated: Changes in vent emissions can signal shifts in magma or volcanic activity.
Lava lakeRelated: Gas flux and composition help interpret activity at exposed lava lakes.
PopocatépetlRelated: Gas observations complement seismic and visual monitoring at Popocatépetl.
MayonRelated: Gas trends can help assess whether Mayon’s magma system is changing.
Volcán de ColimaRelated: Gas measurements can reveal shifts in magma degassing at Colima.