pororoca, tidal bore, Amazon tidal bore, pororoca photos,
tidal bore photos, Victor Miguel Ponce, Araguari river tidal bore, Amapa,
The Amazon tidal bore, or "pororoca," on the estuary of the Araguari River,
Amapa, Brazil, at 8:00 am, January 22, 1989.
to view Prof. Victor Miguel Ponce's SAE article on the pororoca.