Tectonic, non-volcanic tremor is a weak vibration of ground, which cannot be felt by humans but can be detected by sensitive seismometers. It is defined empirically as a low-amplitude, extended duration seismic signal associated with the deep portion (∼20–40 km depth) of some major faults. It is typically observed most clearly in the frequency range of 2–8 Hz and is depleted in energy at higher frequencies relative to regular earthquakes.
Additional publication details
|Publication type||Book chapter|
|Publication Subtype||Book Chapter|
|Contributing office(s)||Earthquake Science Center|
|Larger Work Type||Book|
|Larger Work Title||Encyclopedia of Natural Hazards|