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Definitions for "Mainshock"
Keywords:  aftershock, foreshocks, earthquake, precede, largest
Related Terms: Aftershocks, Aftershock , Foreshock, Swarm, Seismicity, Seismic gap, Richter scale, Richter magnitude scale, Mercalli scale, Massif, Seismologist, Orography, Modified mercalli intensity scale, Geophone, Hypocenter, Seismometer, Seismic moment, Epicenter, Seismogram, Seismic, Hill, Active fault, Range, First quarter, Orogeny, Microseism, Epicentre, Mountain range, Seismology, Benioff zone, Seismograph, Geologic time scale, Recurrence interval, Suture, Terrane, Magnitude, Mauka, Quarter section, Seismic wave, Lineament, Base camp, Transform fault, Convergent plate boundary, Plate tectonics, Mountaineering, En space, Anomaly, Mohorovicic discontinuity, Section
The largest in a series of earthquakes occurring closely in time and space. The mainshock may be preceded by foreshocks or followed by aftershocks.
pnsn.org
the main earthquake at a specified time and location. Compare with aftershock.
eqinfo.ucsd.edu
The largest earthquake in a "cluster" of earthquakes. Mainshocks are sometimes precede by "foreshocks", and generally followed by aftershocks.
seismo.ca
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