Time-space-magnitude interdependence of upper crustal earthquakes in the main seismic region of New Zealand

Abstract

A study is made of the time-spacemagnitude dependence of upper crustal earthquakes through the ideas of conditional intensity and conditional expected magnitude. Strong clustering is found within short distances and times before and after a large event. Seismic gap of smaller earthquake activity prior to an impending large earthquake within jts vicinity and increase in b-value of shocks after a large event are also observed.