Receiver-Function Data Organization
The separation by distance is more appropriately a separation by ray
parameter, or horizontal slowness. Deep and shallow events from the
same distance generate P-waves that arrives near a station with
different incident angles - the clustering should be done to group
events with the same incidence angle. The "close" and far" groupings
are approximate, keep an eye out for changes in the ray parameter.
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Prepared: June/July 1997 - Charles J. Ammon, Penn State