Turbulence
From Tardis Wiki, the free Doctor Who reference
The TARDIS will often experienced turbulence while traveling through the Time Vortex, resulting in violent shaking in the TARDIS's interior dimensions. Gravity pockets were known to cause slight turbulence and tremors. (TV: The End of the World) The moments of disconnect between the inner and outer dimensions is often mistaken for turbulence. (AUDIO: The Auton Infinity)
