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


Z(t) = Z(t½m,M',s,b,g) = Σ10^b^M_i/N^g is a linear
	concentration of the main shocks {i} from
	the magnitude range m £ M_i< M’ and
	interval t – s £ t_i< t estimated as the ratio
	of the average diameter of the source, *l ~*
	Σ10^b^(M_i^-^a⁾/N (when b=0.46), to the average
	distance, *r ~ N^1/3, between them* (that
	implies g = 2/3)


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

22/10/2001