Seismic regulator
A seismic regulator was a device used to control seismic activity in a planet's crust, generally to prevent earthquakes.

Seismic regulators were being installed in a subterranean cavern under the city of San Francisco on Earth in 2368 when a work crew discovered the severed head of Data, which had been buried there for five centuries. ()

Risa was equipped with seismic regulators to stop any earthquakes from occurring. In 2373, Pascal Fullerton cited the regulators as being an example of the illusion that was Risa. ()

See also
 Seismic stabilizer

External link
 

de:Seismischer Regulator
Tools
Geology