Temporal surge

From Memory Alpha, the free Star Trek reference.

A temporal surge is an abrupt but brief rise in temporal energy. Occurrences of these surges are often linked to the presence of chroniton particles.

A microscopic singularity passing through the Sol system at the time of a transport reacted with the accumulated chronitons emitted by the USS Defiant's cloaking device and caused Benjamin Sisko, Julian Bashir and Jadzia Dax to be transported to the year 2024. (DS9: "Past Tense, Part I", "Past Tense, Part II")

While Quark, Rom, Nog and Odo were stuck in 1947 Earth, Rom deduced that the accident which had brought them there was caused by Quark's illegal shipment of kemocite. He hypothesized that they could return to their own time with a sufficiently powerful explosion, which he thought would cause a temporal surge in the resulting reaction with the kemocite. (DS9: "Little Green Men")