mainshock

seismologists study the mainshock and its aftershocks to understand fault behavior.

the mainshock caused widespread damage across the affected region.

early warning systems aim to detect the mainshock before it hits.

the magnitude of the mainshock was 7.8 on the richter scale.

rescuers searched for survivors trapped after the mainshock.

the mainshock triggered landslides and mudslides in the mountainous areas.

scientists analyze data from the mainshock to improve earthquake prediction models.

the mainshock occurred at a depth of 10 kilometers below the surface.

building codes are often strengthened after a major mainshock event.

the aftershocks following the mainshock continued for several days.

geological surveys help determine the location of the mainshock epicenter.