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Calcium carbonate remains (basically). -----Original Message----- From: "Christopher Brown"<hokiediver@ya*.co*> To: techdiver@aquanaut.com Date: Fri May 18 04:17:50 PDT 2001 Subject: Re: "reverse flow" >What is a karst plain, anyway? > >Chris Brown (not a caver) >Suffolk, VA > >--- Trey <trey@ne*.co*> wrote: >> >> Blue holes are tidal but can have some very twisted >> relationships to the >> tides. Caves in karst plains tend to move in one >> direction unless there is a >> temporary disruption , like the breaking of an >> aquaclude. Springs, >> especially along rivers, can reverse and siphon when >> the level of the >> surrounding water rises. Speed of flow is definitely >> not only tidal ( moon >> pull ) , but dependent upon the hydrostatic head >> which can change locally, >> or at a great distance, but is most likely to change >> quickly locally, as in >> low tide at a resurgence into the Gulf where the >> head is coming from 50 >> miles away. >> >> -----Original Message----- >> From: Aldo P. Solari [APS] >> [mailto:aldo.solari@ho*.se*] >> Sent: Thursday, May 17, 2001 7:16 PM >> To: techdiver@aquanaut.com >> Subject: "reverse flow" >> >> >> Dear senior technical divers, >> >> I wonder whether anyone could explain the >> causes of the >> phenomenon of "reverse flow" occurring in caves. >> >> Does the "reverse flow" occur due changes in >> atmospheric >> pressure, tides, coreolli forces, venturi >> effects through the >> cave entrance or any other mechanism/s ? >> >> An interesting topic. >> >> 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'. >> >> -- >> Send mail for the `techdiver' mailing list to >> `techdiver@aquanaut.com'. >> Send subscribe/unsubscribe requests to >`techdiver-request@aquanaut.com'. > > >__________________________________________________ >Do You Yahoo!? >Yahoo! Auctions - buy the things you want at great prices >http://auctions.yahoo.com/ >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. ___________________________________________________ GO.com Mail Get Your Free, Private E-mail at http://mail.go.com -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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