In a message dated 17/09/2009, gpayton@............. writes:

Perhaps,  I do not know what the magic distance should be?


Hi Jerry,
 
    Download and print out the Time Travel graph from  
_http://neic.usgs.gov/neis/travel_times/ttgraph.html_ 
(http://neic.usgs.gov/neis/travel_times/ttgraph.html)  and  look for the ends of the lines. The only line that I can 
see missing is the PnP  reflection for just a few degrees from zero from the 
Moho.
 
    Regards,
 
    Chris 






In a message dated 17/09/2009, gpayton@............. writes:
Perhaps,=20
  I do not know what the magic distance should be?

Hi Jerry,
 
    Download and print out the Time Travel graph=
 from=20
http://neic.u=
sgs.gov/neis/travel_times/ttgraph.html and=20
look for the ends of the lines. The only line that I can see missing is th=
e PnP=20
reflection for just a few degrees from zero from the Moho.
 
    Regards,
 
    Chris