Natural Hazards and Earth System Science www.nat-hazards-earth-syst-sci.net 1561-8633 1684-9981 3 1/2 2003 10.5194/nhess-3-95-2003 http://www.nat-hazards-earth-syst-sci.net/3/95/2003/ http://www.nat-hazards-earth-syst-sci.net/3/95/2003/nhess-3-95-2003.html http://www.nat-hazards-earth-syst-sci.net/3/95/2003/nhess-3-95-2003.pdf 95 101 0000-00-00 A stochastic marked point process model for earthquakes L. Holden S. Sannan H. Bungum Norwegian Computing Center, P.O. Box 114 Blindern, N-0314 Oslo, Norway NORSAR, P.O. Box 51, N-2027 Kjeller, Norway A simplified stochastic model for earthquake occurrence focusing on the spatio-temporal interactions between earthquakes is presented. The model is a marked point process model in which each earthquake is represented by its magnitude and coordinates in space and time. The model incorporates the occurrence of aftershocks as well as the build-up and subsequent release of strain. The parameters of the model are estimated from a maximum likelihood calculation.