Mailing List Archive Mailing List Archive
This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. ------_=_NextPart_001_01C09B76.706901B0 Content-Type: text/plain; charset="iso-8859-1" As cave divers we have all seen our bubbles just go bubbling out of the cave. Cave divers also realize that bubbles released more than a few hundred feet into the cave most likely do not find their way out the entrance. I'm sure that some of the bubbles make it all the way to the surface through cracks that are much too small for humans. I don't think that either of these mechanisms is what you are primarily asking about. We have all exited caves and seen a dome full of air that obviously can't escape. It is still there if we do another dive an hour later or when we pass it again on the way out instead of in. But it is not there the next day. Where did it go? It turns out that the pressure in almost any cave is greater than the pressure used to force carbonation into beer and soda. These processes vary considerably but most are only about 5 to 10 PSI over atmospheric pressure. In other words there is more pressure at 30 feet than is used to carbonate beer. This pressure certainly has the ability to force that gas into the water in the cave. For a cavern dive, most of the gas may make it directly to the surface. But for any kind of penetration at all, in most caves, most of the gas will seep into the water due to the pressure. Ron Bear -----Original Message----- From: Aldo P. Solari [APS] [mailto:aldo.solari@ho*.se*] Sent: Tuesday, February 20, 2001 7:17 AM To: techdiver@aquanaut.com Subject: WKPP caves: where does all the gas go ? I am curious, where does all of the gas divers breathe in the (WKPP or other popular) caves go ? Does the gas get trapped on the ceiling and stay there ? Does the gas filter through (fissures in) the rocks ? Do the in-out currents "flush" the large gas bubbles ? It must be a lot of gas going around there ... This may sound as a simple question BUT I am sure the dynamics of two different fluids in a cave are not :-) cheers, aldo.solari@ho*.se* www.ccbb.ulpgc.es/fish-ecology/solaris ___ -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. ------_=_NextPart_001_01C09B76.706901B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; = charset=3Diso-8859-1"> <META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version = 5.5.2651.75"> <TITLE>RE: WKPP caves: where does all the gas go ?</TITLE> </HEAD> <BODY> <P><FONT SIZE=3D2>As cave divers we have all seen our bubbles just go = bubbling out of the cave. Cave divers also realize that bubbles = released more than a few hundred feet into the cave most likely do not = find their way out the entrance. I'm sure that some of the bubbles make = it all the way to the surface through cracks that are much too small = for humans. I don't think that either of these mechanisms is what you = are primarily asking about. </FONT></P> <P><FONT SIZE=3D2>We have all exited caves and seen a dome full of air = that obviously can't escape. It is still there if we do another dive an = hour later or when we pass it again on the way out instead of in. But = it is not there the next day. Where did it go? It turns out that the = pressure in almost any cave is greater than the pressure used to force = carbonation into beer and soda. These processes vary considerably but = most are only about 5 to 10 PSI over atmospheric pressure. In other = words there is more pressure at 30 feet than is used to carbonate beer. = This pressure certainly has the ability to force that gas into the = water in the cave.</FONT></P> <P><FONT SIZE=3D2>For a cavern dive, most of the gas may make it = directly to the surface. But for any kind of penetration at all, in = most caves, most of the gas will seep into the water due to the = pressure.</FONT></P> <P><FONT SIZE=3D2>Ron Bear</FONT> </P> <P><FONT SIZE=3D2>-----Original Message-----</FONT> <BR><FONT SIZE=3D2>From: Aldo P. Solari [APS] [<A = HREF=3D"mailto:aldo.solari@ho*.se*">mailto:aldo.solari@home.se</A>]</FON= T> <BR><FONT SIZE=3D2>Sent: Tuesday, February 20, 2001 7:17 AM</FONT> <BR><FONT SIZE=3D2>To: techdiver@aquanaut.com</FONT> <BR><FONT SIZE=3D2>Subject: WKPP caves: where does all the gas go = ?</FONT> </P> <BR> <P><FONT SIZE=3D2>I am curious, where does all of the = gas divers breathe in</FONT> <BR><FONT SIZE=3D2>the (WKPP or other popular) caves go ?</FONT> </P> <P><FONT SIZE=3D2>Does the gas get trapped on the ceiling and stay = there ?</FONT> </P> <P><FONT SIZE=3D2>Does the gas filter through (fissures in) the rocks = ?</FONT> </P> <P><FONT SIZE=3D2>Do the in-out currents "flush" the large = gas bubbles ?</FONT> </P> <P><FONT SIZE=3D2>It must be a lot of gas going around there ...</FONT> </P> <P><FONT SIZE=3D2>This may sound as a = simple question BUT I am sure the</FONT> <BR><FONT SIZE=3D2>dynamics of two different fluids in a cave are not = :-)</FONT> </P> <P><FONT SIZE=3D2>cheers,</FONT> </P> <P><FONT SIZE=3D2>aldo.solari@ho*.se*</FONT> <BR><FONT SIZE=3D2>www.ccbb.ulpgc.es/fish-ecology/solaris</FONT> <BR><FONT SIZE=3D2>___</FONT> </P> <BR> <P><FONT SIZE=3D2>--</FONT> <BR><FONT SIZE=3D2>Send mail for the `techdiver' mailing list to = `techdiver@aquanaut.com'.</FONT> <BR><FONT SIZE=3D2>Send subscribe/unsubscribe requests to = `techdiver-request@aquanaut.com'.</FONT> </P> </BODY> </HTML> ------_=_NextPart_001_01C09B76.706901B0-- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]