
		N O T I C E      January 29, 1993

I received this data from Peter Shearer who asks
that you reference its origin.
Examples of earlier versions of these stacks are found in

Shearer, PM,
Imaging Global Body Wave Phases by Stacking long-period seismograms,
JGR,  v 96, n B12, paaaages 20,535-20,324 Nove 10, 1991

Shearer, P.M.,
Constraints on upper mantle discontinuities from observations
of long period reflected and converted phases,
JGR, vol 96, no.b11, pages 18,147-18,182 Oct 10, 1991

alias peter.shearer shearer@bull.ucsd.edu

Peter may be willing to supply newer and better stacks.


