Seismometers for monitoring volcanic activity

https://www.usgs.gov/programs/earthquake-hazards/science/using-distant-seismometers-monitor-and-analyze-volcanic

Seismometers are used to detect upcoming volcanic eruptions, by measuring precursory earthquakes. They're most effective in a large quantity, at a close range, constantly maintained in person. They can foretell if an eruption is happening soon (five days for example) or if there could be multiple eruptions. Some precursory earthquakes cannot be detected by seismometers if they are too far away, resulting in a missed warning sign. 

In one recorded example, earthquakes seem to happen in a scattered form, before merging towards the volcano. After the eruption concluded, the low magnitude earthquakes moved towards the southeast, implying magma flow deep underground rather than any further eruptions.

This last part could be important, because our A.I. should distinguish between warning earthquakes and safe earthquakes.

Since many seismometers are checked remotely, I believe an A.I. can seamlessly fit into this type of system, by taking the resulting measurements every interval, and setting off an alert if it notices a measurement over a certain threshold.

https://eos.org/articles/sound-waves-help-scientists-track-volcanic-eruptions

Seismometers can detect acoustic sound waves as well as physical quakes. 

Deep down, only seismic waves are produced. Further up is when seismic and acoustic waves are made, which is used to tell if a lot of ash is about to be produced.

There are distinctions between acoustic waves caused by eruptions, and waves caused by external events such as meteors and ocean waves. The required signals are much lighter and emerge from the direction of a known volcano.

With a lot of seismometers around, our A.I. can easily distinguish between volcanic sound waves and general sound waves by checking where the waves come from relative to the volcano.

https://www.usgs.gov/faqs/can-earthquakes-trigger-volcanic-eruptions

Usually, for an earthquake to trigger a volcanic eruption, the volcano must be ready to erupt in the first place. Without a pressure buildup, there won't be an explosion. Without enough magma, the eruption can't reach the surface.

What this means is that an earthquake should be seen as a warning sign if other warning signs exist as well.