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Ronnie Bell writes:
> 
:
> When making extremely deep dives make a rapid ascent of 60 feet per minute 
> up to your first deco stop. 
> Why do this? It gets you out from underneath all that ongassing pressure.
> If you think about it, what drives the mechanism and the accompanying dcs?
> It's the pressure DIFFERENTIAL.  [...]

As Rich noted, the pressure differential also drives the formation of
bubbles, albeit somewhat indirectly.  Rapid ascents are counted in
many quarters as being directly involved in increased DCI incidences.
Rich gives a particularly good example, even if he is a small sample. :)

Only more data, recorded by fast profiling dive computers, will allow
modelers to be sure(r).  (Moral: Buy good profiling dive computers,
and share your data!)

Cheers,

David Story                        	        Silicon Graphics, Inc.
story@sg*.co*					Mountain View, California

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