Additional detection of sound?

[mwaters]

Okay, it sounds like you are talking about Infrasound as a stand-alone method of detection. A few questions come to mind.

1. Is this method actually in use anywhere?
   
2. What is the range of such a detection method?
   
3. What is the approximate accuracy?
   
4. Strong winds can blow sound waves around. That being the case, how is that compensated for?
   
5. What station density is required for this?