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

S(t)


S(t½m,M',s,a,b) - the weighted number of
	earthquakes in time interval from (t-s) to t
	and magnitude (m£M_i< M').

Σ(t│m,M',s,a,b) = Σ10^b(M_i^-a)

This function estimates different properties

	depending on the value of b.


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

16/10/2001