Abstract
Abstract Earthquake sequences in the Central Volcanic Region (CVR) of New Zealand are part of a continuum of types of earthquake sequence that range from main shock ‐aftershock sequences to swarms. Most sequences, irrespective of the largest event in the sequence and the duration of the sequence, have swarm characteristics; that is, the difference in magnitude between the largest and second largest event is 0.3 magnitude units or less. Smaller sequences typically have a duration of a few hours to a day in length, whereas sequences with large magnitude events may continue for many weeks. The time distributions of earthquakes within the sequences range from simple foreshock or aftershock patterns to more complex patterns involving both foreshocks and aftershocks separated by periods of seismic quiescence. However, it does not follow that a sequence with an aftershock time distribution will have a magnitude distribution that will be representative of a main‐shock sequence. Routine location data indicate the ...
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