This information is "buried" in several previous postings; however, because of
an issue very recently raised by a naval activity, it appears useful to discuss it
in a single document.

A time versus amplitude display of the SCORPION collapse event acoustic
signal with a time resolution of 0.001s (one millisecond (ms)) confirms the duration
of the collapse phase of the event was 37 ms while the duration of the expansion
phase was 187 ms for a total duration of 224 ms which is the reciprocal of the
bubble-pulse frequency of 4.46 Hz, i.e., the air cavity created by the collapse
oscillated 4.46 times in one second.

The duration of the collapse phase was 16 percent of the total event duration.
The amplitude of expansion phase of the event was significantly greater than the
collapse phase.

As detected by a single hydrophone at a range of 821 nm, the SCORPION signal
displayed energy as high as 400Hz.

If the involved naval activity has any further questions, suggest use of the
following email address: karasjok@aol.com.