Since 2001, though, the seismic activity has not died down.

This situation has led to seismic activity in the past.

Fully half of the human population today live in areas with seismic activity.

"What kind of a threat are you looking at, from the seismic activity?"

Parts of this region have experienced seismic activity in the M5.0 range.

Additional seismic activities were recorded in the days following the event.

During 2003, there was an increase in seismic activity at the volcano.

Since the 1880 eruption, there has been no significant increase in seismic activity.

Then, as happened every ten million years or so, the earth entered another period of intense seismic activity.

"You know those recent news reports about seismic activity in Antarctica?"