Some geologists believe that the earthquake was due to reservoir triggered seismic activity by the Koyna Dam.

This will create jobs which will trigger economic activity in other areas.

The bugle that had signaled the light cavalry to turn also triggered other activity on Alexia's line.

High-profile international events such as the Olympic Games usually trigger such activity.

This may be to trigger specific activity relating to performance (i.e., an improvement plan) or to use the data merely for statistical information.

When this happens, the sign then triggers cognitive activity to interpret the data input and so convert it into meaningful information.

This thing that fell to earth, whatever it was, had somehow triggered volcanolike activity deep beneath the earth's surface.

Sound energy was their only indication of what was happening, and each new bearing report triggered furious activity.

This hypothetical impact is also believed to have triggered volcanic activity on Mercury, resulting in the formation of smooth plains.

Earthquakes can also trigger landslides, and occasionally volcanic activity.