Oh my head is spinning
You know I thought that if SSP is such that speed is increasing with depth then the speed of sound is slowest near the surface and faster deeper down and therefore I would have thought that the deeper sub would pick up the shallower sub cos the sound gets to him that little bit quicker...
I really need to read up on this.
Actaully what would be good would be a diagram for each condition
eg....Positive gradiet Sub A can hear better Sub B, Sub A can hid better.
Negative Gradier...same thing
etc and etc....
Always has been a headf**k for me...
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