It was fun to share wonder, enthusiasms and experiences with fellow travellers to the Antarctic. I don't know how long it will last, but I'm hearing quite a few events. I scrambled and popped over to the Bio Lab to get my recording gear. Mimi Wallace, Dan Osborne and Charlie Petit all joined me for an extraordinary sonic treat. These were a mix of faint and clear descending glissandi of tones, sounding one over another, in a very distinct ostinato.
Sprites have their own particular acoustic signature.
Sure enough, buried in the din of static popping, there was an occasional crackle in a slightly higher register. Click here to listen to an MP3 sample of atmospheric whistlers.