Open AccessModelling seismic catalogues by cascade models: Do we need long‐term magnitude correlations?
Author(s) -
Lennartz S.,
Bunde A.,
Turcotte D. L.
Publication year - 2011
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.2010.04902.x
Subject(s) - induced seismicity , aftershock , seismology , geology , term (time) , magnitude (astronomy) , physics , quantum mechanics , astronomy
SUMMARY We consider sequences of earthquakes from northern and southern California. We study these data sets for long‐term persistence using the concept of natural time and fluctuation analyses. We also construct a simulation model for regional seismicity using random background seismicity and the BASS model for aftershock occurrence. We include in the simulation model corrections for long‐term persistence in the background seismicity and for missing data early in aftershock sequences. We find excellent agreement between the California data and the simulations indicating significant long‐term correlations in earthquake magnitudes.