While surfing the program guide tonight I came across this program on SBS Saturday at 5:30pm.
The Children of the MoonTidal bores develop at spring tides in funnel-shaped estuaries, and can be observed in 60 to 80 rivers worldwide. They're particularly spectacular during the strong equinoctial tides and can provide great surfing opportunities. This documentary follows bore enthusiasts in three spots: Sao Domingo do Capim in the heart of the Amazon in Brazil, Saint-Pardon in Gironde, France, and Haining in China, where a tide-watching festival is held each year.
I thought I'd surf the internet on the subject and found this:
"A monthly occurrence, a pororoca develops when the strengthened Atlantic Ocean tide advances into the river basin, creating a giant swell that flows upstream for several hundred miles at speeds of 20 miles an hour or more. The phenomenon is most pronounced in March and April because water levels are near their highest, and the waves, which appear every 12 hours for several days, are the most tricky....Near the mouth of the Amazon, a pororoca can be as high as 12 feet...The record for surfing a pororoca is 34 minutes and 10 seconds, set last year."
www.nytimes.com/2004/03/22/world/sao-domingos-capim-journal-far-ocean-surfers-ride-brazil-s-endless-wave.htmlHere's another interesting doco on the phenomena - nice music also
http://video.google.com/videoplay?docid=713809622642491779&hl=en
