Thanks for your reply and over the past few weeks I have been trying to locate some conclusive proof based upon research that these rapid changes in pressure (Saw tooth dive profile) and I have concluded the following:
Most SCUBA organisations/associations/federations/institutes agree that Saw-tooth Dive profiles are a bad thing and can bring on the onset of type 2 decompression sicknes quicker
Apart from The BS-AC Safe diving practices I quoted in a previous posting here is further information recognising the subject fro you to consider:
The Reduced Gradient Bubble Model (RGBM) based on crushing Nuclei is the best analysis to show how 'Saw tooth dive profiles', (yo-yo diving), increases the risk of type 2 DCS whilst diving on tables or computer (see link)
http://www.homepages.hetnet.nl/~deep_ocean/index.html?science04.html
NO yo-yo dive profiles is clearly stated in the link below.
http://www.echonet.co.uk/phoenix/proplan.htm
and as a generalisation quote from the link below which looks at both tables and computers
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They cannot calculate the actual nitrogen load of an individual and do not take into account predisposing environmental factors. In the 1997 DAN data, 93.7% of the divers experiencing DCI were diving within the limits of the computer or table that they were using. This clearly demonstrates that nitrogen buildup is only part of the picture in the risk of DCI. Fast ascent rates, square profile dives, saw-tooth dive profiles and progressively deeper dives during a day all increase the risk of DCI considerably. Also, we know that cold water, exertion in currents and dehydration are just some of the factors that increase the susceptibility to DCI.
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http://www.divenewzealand.com/54dci.html
It's not enough for me but until proved otherwise I will 'tow the party line'.
Hi Devjr
You asked 'does any of what you you posted have a point'? Well, you will have to answer that yourself!
The change in volume occurs each ascent and descent, (remember Boyles Law), the second compression cycle takes place in the same way radio waves are propagated i.e. the collapsing EM field (in the case of diving the gases trying to disapate on ascent) never quite equalise totally before the next field is set up (this compresses the gas in the tissues again but now ata different rate) This EM field pushes the first one outwards and so the radio wave is radiated (or in the case of divinging the short rapid descent compresses the already compressed gas further).
(((((((EM1 (EM2 (EM3) EM2) EM1)))))))
With regards to your computer and the tables....... if they were so good they would come with a 100% guarantee that you will not get DCS if you use them correctly.
Have you ever seen this guarantee come with a set of tables or a computer? I haven't!
I don't think I said anywhere that the body was storing up micro bubbles during SI! I believe that was your suggestion?
If you want to learn more, check out these links with an open mind like I did.
Regards
Aquamore