explosion
aftershock
amplitude
artificial
background
beat
component
distance
earth
earthquake
elastic
epicenter
equipment
focus
graph
graphic
health
horizontal
illustration
impact
industrial
line
measurement
mechanical
motion
natural
needle
oscillation
polygraph
pressure
pulse
rate
recording
registration
richter
seismic
seismogram
seismograph
seismological
seismometer
surface
technological
temperature
test
trace
vertical
vibration
volcano
volumetric
wave