
Originally Posted by
Yatta
Seismic travel-time tomography, magnetotelluric resistivity imaging, etc. Indirect observations, but computationally intensive and not practical for quick/blow by blow warning.
Very difficult to enumerate/type here using a fone. But we have techniques to monitor a volcano's activity. Ground deformation (gps, edm, satelite interferometry, gravity, precise leveling), geochemistry, seismic, electeomagnetics, visuals, etc.
Sent from my Mi A1 using Tapatalk