Damper field
From Tardis Wiki, the free Doctor Who reference
Ruslan used a damper field around his mines on Syra to cover up the damage. River Song was able to detect this using her sonic screwdriver. (AUDIO: The Sonomancer)
There was a damper field around the Vatican catacombs which kept River from using her vortex manipulator to escape. (AUDIO: The Doomsday Chronometer)
