Tectonic LFEs are characterized by generally low magnitudes (M<3) and have frequencies peaked between 1 and 3 Hz. They are the largest constituent of non-volcanic tremor at subduction zones, and in some cases are the only constituent.
Tectonic LFEs are a significant component of seismic activity at subduction zones, particularly in terms of non-volcanic tremors. They are characterized by low magnitudes (M<3) and frequencies peaking between 1 and 3 Hz.