Reconnaissance of submerine groundwater discharge at Ubatuba coast - Brazil, using ²²²Rn as a natural tracer - Oliveira, Joselene de; Mazzilli, Barbara Paci; Braga, Elisabete de Santis; Burnett, Luciana A. Farias; Furtado, Valdenir Veronese (Simpósio Brasileiro de Oceanografia, 2002)