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On Sun, 3 Mar 1996, Richard Pyle wrote: > But again, this is all theory - as Robb put it, our lab-coat > rationalization of how it works. Perhaps the most useful aspects of "theory" are found in the big picture, ie: what general recommendations will help guide divers to the surface as quickly and safely as possible. To this extent, there is a major difference in the "signature" of ascent profiles based soley on disolved gas assumptions and ascents calculated by including free phases (bubbles) in the computation. Roughly, bubble ascents take about 1/2 the 10ft (3m) stop time calculated by a Buhlmann/Hann P-4 model and distribute it amongst deep stops starting within 2 or 3 ata of bottom depth. As Rich points out, South Pacific divers have come up with "experimental" ascent protocols (...under penalty of death/bends/no income for bad data....) that include deep stops and no 10 or 20 ft stops. Clearly, there is no one correct way to decompress...but there may be an optimal way.... Regards, EM _____________________________________________________________ Eric Maiken email: ebmaiken@ea*.oa*.uc*.ed* Dept. of Physics o: 714 824-6621 U. of California fax: 714 824-2174 Irvine, CA 92715-4575
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