Relatore: Shane Nyall Murphy, Dottorando in Rischio Sismico, UNiversità degli Studi di Napoli "Federico II" (seminario presso sede del "RISSC", ore 11:00)
Recent seismological analysis has shown a general scaling between final magnitude and the averaged first few seconds of ground motion recorded by seismic arrays. One possible explanation for this scaling is that an earthquake's final size is somehow related to it's initiation. Another possible hypothesis is that the initial recorded ground motion relates to a substantial section of the overall fault size.
By using simple dynamic and kinematic models we investigate both theories. Our dynamic models show that scaling is valid only over a narrow magnitude range for a particular class of rupture. Simple kinematic models on the other hand provide a more fruitful result whereby scaling between magnitude and a simplified peak ground displacement is similar to that observed in real data.