The 2002 M5 Au Sable Forks, NY, earthquake sequence:
Source scaling relationships and energy budget
Rachel E. Abercrombie,1
and WonYoung Kim2
Received 18 July 2009; revised 17 February 2010; accepted 3 March 2010; published 27 July 2010.
 We find invariant high stress drops and radiated energies for a sequence of intraplate
earthquakes. We estimate source parameters of the Au Sable Forks, NY, earthquake
(M5, 2002) and aftershocks. This intraplate earthquake was the largest to occur in Eastern
North America since 1988 and the largest to be recorded by regional broadband networks.
We use the empirical Green's function (EGF) method and define a set of qualitative
and quantitative rules for the selection of EGF earthquake pairs and for the quality
verification of the obtained EGF spectral ratio. We use a multitaper code that performs the
complex spectral division with minimum frequency leakage and allows transformation
back to the time domain to check the validity of the EGF event. We estimate source