(According to that model, the number and
size of aftershocks generally decrease over time in a predictable way.)
Not exact matches
(Once the quake had occurred, statistical forecasting based on the
size of the main shock did anticipate the possibility
of its largest
aftershock: a magnitude - 6.3 quake in February that heavily damaged older structures in Christchurch.)
It is constantly updating by pulling data on the
size and location
of aftershocks from the US Geological Survey «s website.
Conversely, a series
of aftershocks that contains only two such moderate -
sized aftershocks would also contain far fewer magnitude - 4 or larger quakes than sensors actually record today.