Someone kindly posted the link to the Abyss RGBM document:
ttp://www.abysmal.com/pages/articles/abys1.pdf  (which is quite interesting
reading, even if you are not seduced by the maths).
In a mad moment when I had my serious head on, I printed it & read it. One
statement really stood out :

c) Doppler bubble counts drop TENFOLD when ascent rates drop from 60 fsw /
min to 30 fsw / min (my emphasis)

So what do ya think of that ?

(geek head has now been removed and normal programmes will be resumed)

Andy Johnson
Senior Product Support Specialist
UK HSC DASD
Basingstoke AL1C
Tel: 01256 34 1490 (Hunting Group)
Tel: 01256 34 1264 (Direct)
Mobile:07703 59 8282   Mobex:277 321
e-mail [log in to unmask]