Time distortion

Time distortion referred to disturbances in space-time, including those caused by anachronisms.

Cyber-Technology could detect the Doctor's TARDIS by registering the time distortion it created. (TV: Attack of the Cybermen) It is possible that all time vessels generated time distortion, as the Sixth Doctor was able to track the Rani based on this. (TV: The Mark of the Rani) The Third Doctor thought of the Rani as an expert in time distortion. (TV: Dimensions in Time)

Time distortion was present in the Humanian Era, the Sensorian Era, and the Sumaran Era, caused when the Eighth Doctor rescued Charley Pollard from the R101. (AUDIO: Neverland)

The Doctor could not land the TARDIS in New York, 1938 because of time distortions. (TV: The Angels Take Manhattan)

Behind the scenes
Time distortions in the Time Vortex act as obstacles in the first and last levels of the online game Doctor In A Dash where, as with all levels, the Doctor's TARDIS (the player) races against a Dalek Flying Saucer, a Judoon rocket, and a Slitheen craft to find a Space-Time Manipulator.