pulsaciju srove

"GK" <zanavykas@bigpond.com> wrote in message news:ih6436$6uo$1@trimpas.omnitel.net...
> Danger From Rip Currents
> 
> In the US, rip currents cause approximately 100 drownings per year. 
> About 80% of all swimmers rescued at beaches were endangered by rip 
> currents (United States Lifesaving Association). Swimmers who understand 
> rip currents can reduce their chances of being caught in one and 
> increase their chances of survival if they are caught in a rip current.
> 
> What Is a Rip Current?
> 
> A rip current is a narrow region where water is flowing outward 
> perpendicular to the shoreline. They usually range from 20 to 100 feet 
> wide, but can occasionally be wider. The outward flowing current pulls 
> even strong swimmers outward, but does not pull swimmers downward.
> 
> People associate rip currents with ocean beaches, but they can also 
> occur on any beach that has waves large enough to break, including large 
> lakes. Rip currents can occur where there is a natural break in an 
> offshore sandbar or near a manmade structure such as a pier or jetty.
>