Rise of activity, i.e. inverse cascading, at the approach of an extreme event

Clustering of earthquakes


In case of de-clustered catalogs each main

	shock has its number, b_i(e,m_aft), of
	aftershocks of magnitude M ³ m_aft in the
	first e days after the origin time.

B(t \| m,M',s,m_aft,e) = max b_i(e,m_aft) is the
	maximum calculated over the main shocks
	with m£M_i< M' and time interval (t-s,t).


		Sixth Workshop on Non-Linear
Dynamics and Earthquake Prediction
	The Abdus Salam ICTP, Miramare

16/10/2001