An ìIdealî Acoustic Source for CTBT Hydro Research Would...
be non-explosive, thus safe, and hence deployable by university and non-military researchers, ...
not require permitting and thus could be used with little lead time, ...
be easily deployed at SOFAR channel depths (~1000 m), ...
be loud enough to produce signals with sufficient SNR at ranges of thousands of kilometers, ...
be inexpensive and readily available from commercial sources.