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Scuba Forum / General / October 2004Dear Scuba Doc?
If, during a beach dive, after I have successfully passed the dreaded SBS zone, I am in a 33' depth and have taken a breath just as a 10' wave crested over me instantly putting me in 43' of water, if the wave speed is faster than I can exhale, will my lungs blow up? > If, during a beach dive, after I have successfully passed the dreaded > SBS zone, I am in a 33' depth and have taken a breath just as a 10' > wave crested over me instantly putting me in 43' of water, if the wave > speed is faster than I can exhale, will my lungs blow up? Waves break when the wave height is approximately 3/4 of the water depth. Thus your ten foot wave will not be a wave in 33' of water. It will more likely be a 5' swell. Since divers dive in 33' of water with 5' swells routinely, and none have had their lungs explode (that I know of), the answer is No. But you knew that anyway. And if you are in 7.5 feet of water with 10 foot waves crashing on you, you should be boogie boarding, not scuba diving. Bart F. > And if you are in 7.5 > feet of water with 10 foot waves crashing on you, you should be boogie > boarding, not scuba diving. > > Bart F. So true. Its sad we had to lose so many to SBS before learning this. Before enlightenment, Sanded Brain Syndrom claimed way to many victims. > > If, during a beach dive, after I have successfully passed the dreaded > > SBS zone, I am in a 33' depth and have taken a breath just as a 10' [quoted text clipped - 10 lines] > > Bart F. We are told that if we hold our breath and rise 4 feet, our lungs will POP. How can this sudden 5 foot difference be immune from those same forces and consequences? > We are told that if we hold our breath and rise 4 feet, our lungs will > POP. How can this sudden 5 foot difference be immune from those same forces > and consequences? Those that told you, lied and you weren't smart enough to notice and because you don't understand the dynamics of the situation. They lied: The risk is not from a rise of 4 feet while holding your breath. It's from a chance in pressure equivalent to a change of 4 feet while you're near the surface and your lungs are full. Even at that, you're being misled. Your lungs are never full . . . unless you started holding your breath earlier. Dynamics: The pressure you experience while a wave passes over is not equal to the depth of the column directly above, but the average of the depth of the water approximately above. Since waves are accompanied by troughs, the average pressure changes less than you would expect as a wave passes over. Here's a hit to assure you this is true. When you dive in a pool, do your ears equalize in say, 6 feet? When a wave passes over, do you have to equalize them then too? See? Lee >If, during a beach dive, after I have successfully passed the dreaded >SBS zone, I am in a 33' depth and have taken a breath just as a 10' >wave crested over me instantly putting me in 43' of water, if the wave >speed is faster than I can exhale, will my lungs blow up? Yes. I've had this happen to me several times and, in fact, have been dead for a number of years.  Signaturedillon When I was a kid, I thought the angel's name was Hark and the horse's name was Bob. > If, during a beach dive, after I have successfully passed the dreaded > SBS zone, I am in a 33' depth and have taken a breath just as a 10' > wave crested over me instantly putting me in 43' of water, if the wave > speed is faster than I can exhale, will my lungs blow up? Only if yer holding yer breath. > If, during a beach dive, after I have successfully passed the dreaded > SBS zone, I am in a 33' depth and have taken a breath just as a 10' > wave crested over me instantly putting me in 43' of water, if the wave > speed is faster than I can exhale, will my lungs blow up? no, but if you take the breath at the 43' point, and the wave passes, bringing you back to 33' is not a big enough change, only about 25%. some of that you will already have exhaled. > > If, during a beach dive, after I have successfully passed the dreaded > > SBS zone, I am in a 33' depth and have taken a breath just as a 10' [quoted text clipped - 4 lines] > bringing you back to 33' is not a big enough change, > only about 25%. some of that you will already have exhaled. In my best Steve Martin doing Mavin Johnson,,,Huuuunhhh? > > > If, during a beach dive, after I have successfully passed the dreaded > > > SBS zone, I am in a 33' depth and have taken a breath just as a 10' [quoted text clipped - 6 lines] > > In my best Steve Martin doing Mavin Johnson,,,Huuuunhhh? This is how I understand the science behind your question. If you are hovering at 43' (sea water), the ambient pressure is approximately 2 10/33 ATM. When the wave passes and you go to 33', you are at 2 ATM. The percentage change would then be 10/33 / (2 10/33), or approximately 13%. This means that the air in your lungs would increase in volume by about 13%. At the same time, you are exhaling so the volume change should be somewhat less than this, but depends on how fast you exhale and how fast the wave passes. I'd guess that 13% volume change (the maximum in your scenario with breath holding) wouldn't be enough to cause serious damage as long as you hadn't already filled your lungs to capacity (or very near capacity). >If, during a beach dive, after I have successfully passed the dreaded >SBS zone, I am in a 33' depth and have taken a breath just as a 10' >wave crested over me instantly putting me in 43' of water, if the wave >speed is faster than I can exhale, will my lungs blow up? Yes. But if you keep breathing continuously, as you know you are suposed to do, you will be able to exhale fast enough. Somplace I read about a diver hanging at 10ft for a decompression stop. Seems he was hanging on a line fixed to the bottom, not to a float on the surface. The diver died from a lung expansion injury. The only explaination was that he must have held is breath wile a wave trough came past and reduced the ambient pressure. Now this is an anecdotal experience and doesn't really proove or even demonstrate anything. But the "best advice" as reagards you question is "Don't do that!" SignatureCharlie Hammond -- Hewlett-Packard Company -- Ft Lauderdale FL USA (hammond@not@peek.ssr.hp.com -- remove "@not" when replying) All opinions expressed are my own and not necessarily my employer's. > Yes. No > But if you keep breathing continuously, as you know you are suposed to do, > you will be able to exhale fast enough. There's no rule that says you should breathe continuously or any reason why there should be. > Somplace I read about a diver hanging at 10ft for a decompression stop. > Seems he was hanging on a line fixed to the bottom, not to a float on > the surface. The diver died from a lung expansion injury. Bullshit. Somewhere I read about a man that could jump over tall buildings in a single bound. It wasn't true either. > Now this is an anecdotal experience and doesn't really proove or even > demonstrate anything. But the "best advice" as reagards you question is > "Don't do that!" So you're going to stay submerged until the seas return to a totally calm state? Lee >If, during a beach dive, after I have successfully passed the dreaded >SBS zone, I am in a 33' depth and have taken a breath just as a 10' >wave crested over me instantly putting me in 43' of water, if the wave >speed is faster than I can exhale, will my lungs blow up? An emphatic "No". The real danger here for persons like yourself, is what happens if your Viagra kicks in just as the wave crest passes. safe diving, bullshark > An emphatic "No". > [quoted text clipped - 4 lines] > > bullshark Hey,,,see, we'se tawkin divin ova heeyah !! > If, during a beach dive, after I have successfully passed the dreaded > SBS zone, I am in a 33' depth and have taken a breath just as a 10' > wave crested over me instantly putting me in 43' of water, if the wave > speed is faster than I can exhale, will my lungs blow up? one could only hope! > > If, during a beach dive, after I have successfully passed the dreaded > > SBS zone, I am in a 33' depth and have taken a breath just as a 10' > > wave crested over me instantly putting me in 43' of water, if the wave > > speed is faster than I can exhale, will my lungs blow up? > > one could only hope! Wouldn't ya know it. We get a scuba thread goin, and along comes Joe English to distract US. Joe English, go back to "FascistsAgainstScubacontent.UN-AmericanOrg." >>>If, during a beach dive, after I have successfully passed the dreaded >>>SBS zone, I am in a 33' depth and have taken a breath just as a 10' [quoted text clipped - 7 lines] > > Joe English, go back to "FascistsAgainstScubacontent.UN-AmericanOrg." and how did I distract US? > > Joe English, go back to "FascistsAgainstScubacontent.UN-AmericanOrg." > and how did I distract US? Never mind Joe. I forgot there for a second that this was rec.scuba. >>>Joe English, go back to "FascistsAgainstScubacontent.UN-AmericanOrg." >> >> and how did I distract US? > > Never mind Joe. I forgot there for a second that this was rec.scuba. And your point is ? > >>>Joe English, go back to "FascistsAgainstScubacontent.UN-AmericanOrg." > >> [quoted text clipped - 3 lines] > > And your point is ? He forgot that he actually distracted us from our rantings about politics for something related to scuba. >>>Joe English <jenglish@accessusn.net> wrote in message > [quoted text clipped - 10 lines] > He forgot that he actually distracted us from our rantings about politics > for something related to scuba. Thanks, Chris, for a minute there I thought I was crazy. Never did get his point. <snip> > Thanks, Chris, for a minute there I thought I was crazy. Never did get > his point. That doesn't mean you aren't crazy. :-) > > Never mind Joe. I forgot there for a second that this was rec.scuba. > > And your point is ? Exactly. > > [quoted text clipped - 3 lines] > > Exactly. Go back and read any of your ranting posts. Thanks for making my point so easy. > > > > [quoted text clipped - 6 lines] > Go back and read any of your ranting posts. Thanks for making my point > so easy. And your point is? >>>>>Never mind Joe. I forgot there for a second that this was rec.scuba. >>>> [quoted text clipped - 6 lines] > > And your point is? How was my original point off scuba? > > And your point is? > > How was my original point off scuba? Yeah. Which rant were you refering to Joe? The one about GOP terrorists storming the Miami/Dade courthouse, shutting down the recount of votes? Violence to influence the outcome of an election? Is talking about that a rant? The one where I question the utter failure of the bush coup to protect US on 9/11 and their lieing about being warned? Is questioning his ineptitude a rant? Are you proposing that they DID protect US on 9/11? Smart bombs that spread drink can look alike mines that resemble the color of the food packs being distributed in the same area. Is it a rant to talk about "Smart Bombs" with "Brain Farts"? The PNAC. I bet its the PNAC'ers you don't agree with me on. Is quoting their own Agenda some how a rant. In 1997 their plan was world leadership. When they had their chance to show their style, they chose War instead of leadership. Death instead of diplomacy. Profits instead of piety. Our scum rising to the top instead of the cream of our minds. THEY are being squandered by the coup. >>>And your point is? >> [quoted text clipped - 27 lines] > to the top instead of the cream of our minds. THEY are being > squandered by the coup. My whole point you idiot, who has been off topic and who the f.ck introduce it? Get back on your meds, Charlie > > > And your point is? > > [quoted text clipped - 6 lines] > shutting down the recount of votes? Violence to influence the outcome > of an election? Charlie, Charlie, Charlie......the recount was not shut down because of the GOP protest. Had Leahy ever changed his story? :-) > Is talking about that a rant? > > The one where I question the utter failure of the bush coup to protect > US on 9/11 and their lieing about being warned? Is questioning his > ineptitude a rant? I take it you didn't read the memo? > Are you proposing that they DID protect US on 9/11? > [quoted text clipped - 10 lines] > to the top instead of the cream of our minds. THEY are being > squandered by the coup. Dennis > > The one about GOP terrorists storming the Miami/Dade courthouse, > > shutting down the recount of votes? Violence to influence the outcome [quoted text clipped - 3 lines] > GOP protest. > Had Leahy ever changed his story? :-) > Dennis Dennis, Dennis, Dennis, Of course he did. He went from downstairs and counting to upstairs because"We can't work in this riot. Moved upstairs. Riot moved upstairs. He quit the count with "We can't work in a riot" Police called to escort terrorized workers. They do. Leahy talks to Penelas. Leahy then says " I wasn't scared" " Honest" Leahy keeps job then gets better one. Penelas just voted out. http://www.wordiq.com/definition/Alex_Penelas "Penelas refused to campaign alongside Al Gore, and made no comments during the controversy over Miami-Dade County's ballots in the aftermath of the election. This led many Democrats to criticize Penelas as a Republican turncoat, although he has since apologized for his actions" He apologized? I wonder if he gave back his "Commission" ;) :) ;) > > > The one about GOP terrorists storming the Miami/Dade courthouse, > > > shutting down the recount of votes? Violence to influence the outcome [quoted text clipped - 10 lines] > Of course he did. He went from downstairs and counting to upstairs > because"We can't work in this riot. Oh? Don't recall him saying that. I know we've discussed this several times before. :-) > Moved upstairs. Riot moved upstairs. He quit the count with "We can't > work in a riot" Well, the GOP protest started, IIRC because they moved the counts t an area that folks could not observe. > Police called to escort terrorized workers. They do. > [quoted text clipped - 10 lines] > > He apologized? I wonder if he gave back his "Commission" ;) :) ;) Dennis > > Dennis, Dennis, Dennis, > > [quoted text clipped - 3 lines] > Oh? Don't recall him saying that. I know we've discussed this several times > before. Dennis, You have to be the most dis-honest, integrity lacking sock puppet here. 4 years you have been arguing, denying known facts, just blah, blah, balh, denials only to find that you don't look at facts. Just GOP damage control talking points. 4 years I've talked about the scum in pnac who actually were the ones working in the background sabotaging your government as well as mine. This week you finally said OH, there is a pnac. Showing that you never bothered to look at links all the time you were saying "Cite". Thank you, I couldn't have paid a better comic side kick to help put this info out. Icarus/dennis,,, the Ed McMahon, the Lou Costello, the Huntz Hall of Rec.Scuba > > > Dennis, Dennis, Dennis, > > > [quoted text clipped - 7 lines] > You have to be the most dis-honest, integrity lacking sock puppet > here. So of coruse you'll be able to cite where Leahy said "we can't work in this riot"? :-) > 4 years you have been arguing, denying known facts, just blah, blah, > balh, denials only to find that you don't look at facts. Just GOP > damage control talking points. > 4 years I've talked about the scum in pnac who actually were the ones > working in the background sabotaging your government as well as mine. > This week you finally said OH, there is a pnac. Showing that you never > bothered to look at links all the time you were saying "Cite". > Thank you, I couldn't have paid a better comic side kick to help put > this info out. Dennis > Icarus/dennis,,, the Ed McMahon, the Lou Costello, the Huntz Hall of > Rec.Scuba > So of coruse you'll be able to cite . Look it up yourself. > > So of coruse you'll be able to cite . > > Look it up yourself. Your assertion, you back it up. Dennis > > "Dennis \(Icarus\)" <nojunkmail@ever.invalid> wrote in message > news:<0Bz5d.29390$vl.1355@fe40.usenetserver.com>... [quoted text clipped - 6 lines] > > Dennis I did when it happened.Its you that ignores the interviews he gave early in the day . You were too busy quoting rush lies that proved back then that you didn't know what you were talking about. latching onto the last statement of the day after political pressure from Penelas. + > > > "Dennis \(Icarus\)" <nojunkmail@ever.invalid> wrote in message > > news:<0Bz5d.29390$vl.1355@fe40.usenetserver.com>... [quoted text clipped - 8 lines] > I did when it happened.Its you that ignores the interviews he gave > early in the day . You were too busy quoting rush lies that proved Feel free to cite 'em again. > back then that you didn't know what you were talking about. > latching onto the last statement of the day after political pressure > from Penelas. Dennis > + > Feel free to cite 'em again. > > Dennis > > > > + Feel free to get them yourself. Your typical debate tactic, wait until after archives cycle out then dribble "Cite". You've been doing it so long, that you actually think its a legit debate tool. > > Feel free to cite 'em again. > > [quoted text clipped - 3 lines] > > Feel free to get them yourself. Your claim, you back it. > Your typical debate tactic, wait until after archives cycle out then dribble "Cite". Try google. > You've been doing it so long, that you actually think its a legit debate tool. Its a pretty standard technique to ask folks to back their assertions. Dennis > Its a pretty standard technique to ask folks to back their assertions. Especially when they are raving lunatics. > > Its a pretty standard technique to ask folks to back their assertions. > > Especially when they are raving lunatics. Damn, we have some of those here? Curtis > > > Its a pretty standard technique to ask folks to back their assertions. > > [quoted text clipped - 3 lines] > > Curtis Oooh, Oooh, pick me... pick me... How do I become a raving lunatic? Oh, wait, never mind... It's probably a little too late for me to ask that question. > > > Especially when they are raving lunatics. > > Damn, we have some of those here? > Oooh, Oooh, pick me... pick me... How do I become a raving lunatic? Oh, > wait, never mind... It's probably a little too late for me to ask that > question. Sorry Chris, you're far outclassed in the raving lunatic division, you'll have to settle for "eccentric". ;-) Curtis > > > > Especially when they are raving lunatics. > [quoted text clipped - 8 lines] > > Curtis Unfortunately, I don't have enough money to be considered eccentric. I guess I'll just have to settle for loony. >>>>Its a pretty standard technique to ask folks to back their assertions. >>> [quoted text clipped - 7 lines] > wait, never mind... It's probably a little too late for me to ask that > question. It is :-) > > > > Its a pretty standard technique to ask folks to back their assertions. > > > [quoted text clipped - 7 lines] > How do I become a raving lunatic? > Oh,> wait, never mind... and thus you win "The Laugh of the Day Award" !! > > You've been doing it so long, that you actually think its a legit debate > tool. > > Its a pretty standard technique to ask folks to back their assertions. > > Dennis Unless its for you , who denied the events as they happened. Like I said, find them yourself. When I directed you to them the first time, you were too busy denying that the counting room that they moved to upstairs had a window. You kept it up for days after I posted the link ,,, to the pictures of the window. You remember don't you? That was the week you were making excuses for terrorists and election crime. I believe you called them,,, vigilantes? > > > You've been doing it so long, that you actually think its a legit debate > > tool. [quoted text clipped - 4 lines] > > Unless its for you , who denied the events as they happened. I've backed what I said, Charlie. Feel free to show where I haven't. > Like I said, find them yourself. Like I said, your assertion, your responsibility to prove it. > When I directed you to them the first time, you were too busy denying > that the counting room that they moved to upstairs had a window. You [quoted text clipped - 4 lines] > terrorists and election crime. I believe you called them,,, > vigilantes Again, feel free to cite. Dennis > I've backed what I said, Charlie. Feel free to show where I haven't. You backed what???????????? You liiiiieing mutha fuka!!!!!! All you have done here is quote every lie the coup has spread while off handedly denying every piece of evidence presented. Fortunately, you are of no consequence. Your credibility went out the "Window" of the Miami/Dade courthouse that you still brayed didn't exist after seeing pictures of it. Tell Louie to make me another egg cream. > Dennis > > I've backed what I said, Charlie. Feel free to show where I haven't. > > > You backed what???????????? I've backed what I said, Charlie. Feel free to show where I haven't. > You liiiiieing mutha fuka!!!!!! back to the ad hom, eh charlie? > All you have done here is quote every lie the coup has spread while > off handedly denying every piece of evidence presented. Fortunately, [quoted text clipped - 3 lines] > > Tell Louie to make me another egg cream. who? > > Dennis Dennis >liiiiieing mutha fuka lie coup spread denying no consequence >credibility brayed ... > If, during a beach dive, after I have successfully passed the dreaded > SBS zone, I am in a 33' depth and have taken a breath just as a 10' > wave crested over me instantly putting me in 43' of water, if the wave > speed is faster than I can exhale, will my lungs blow up? No, but your patience might. :) > > If, during a beach dive, after I have successfully passed the dreaded > > SBS zone, I am in a 33' depth and have taken a breath just as a 10' > > wave crested over me instantly putting me in 43' of water, if the wave > > speed is faster than I can exhale, will my lungs blow up? > > No, but your patience might. :) :) :) |
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