Meanings

shallow earthquake

base isolated system

base isolation

to be horrified

zhen (one of the trigrams of the I Ching: thunder, east)

Sumatra-Andaman earthquake (2004, resulting in the Indian Ocean tsunami)

seismic observation

earthquake damage

to tremble

earthquake resistance standards

vibration control (in earthquake-resistant construction)

Tonankai earthquake of 1944

1946 Nankaido earthquake

helioseismology

slow earthquake

distant earthquake

to (make something) quiver

seismic intensity scale

hypocentral region

earthquake source fault