From: Dan Bolser dan.bolser@.........
Sent: Thu, 10 Mar 2011 9:13
Subject: Re: Representative stations (and IRIS station list)


Sounds like a good idea. By how much does the density of the rocks
ctually change?
    So, just how do you propose to measure, with some precision, the speed =
of sound in some rock, say 100 km below ground?
Regards,
Chris





=
From: Dan Bolser dan.bolser@........
om

Sent: Thu, 10 Mar 2011 9:13

Subject: Re: Representative stations (and IRIS station list)





Sounds like a good idea. By how much does the density of th=
e rocks
actually change?

    So, =
just how do you propose to measure, with some precision, the speed of sound=
 in some rock, say 100 km below ground?
Regards,=

Chris