are typically used in the study of phenomena at long
ranges, due to reduced atmospheric attenuation below ∼ 16 Hz.
At these frequencies long range connotes source distances > 100
km. This fits right in with the nuclear treaty verification work
that employs a fair number of scientists, engineers, field
technicians and students at the GI. However, our infrasound
research group has made significant progress in the application of
acoustic signal processing to infrasonic data at ranges < 10 km.
In late summer 2007 a few of us went out to the field to put one
such application to the test. The experiment was called Explosion
Localization Via Infrasound (ELVIS). In this talk I'll review the
background leading up to the experiment and stress the importance
of always having a set of "hip pocket" slides available for