Temporal flux

Temporal flux refered to alterations to history.

The Fourth Doctor's mission to Skaro caused temporal flux, with the Parachronistic Chamber on Gallifrey monitored and contained. (PROSE: A Device of Death)

Temporal flux caused irreversible alterations to history when the effects of the Last Great Time War entered real-time. The Sontarans' battle computers indicated that the planet Drakkis has been at peace for its entire existence before its sector of space was contaminated by temporal flux, and other planets had suffered the same. (AUDIO: The Sontaran Ordeal)

The Tenth Doctor tried explaining the mechanics of infinite temporal flux to Martha Jones. (TV: The Shakespeare Code