ABSTRACT
As part of a series of intensive šeld data collection studies in Japan (Horikawa and Hattori, 1987), several short-and long-term ¦uorescent tracer studies of longshore sand transport were conducted (Kraus, Farinato, and Horikawa, 1981; Kraus et al., 1982, Kraus, 1988). Prior to making these šeld measurements, it was standard procedure to reconnoiter the nearshore to avoid rip currents. In the early afternoon of August 21, 1980, a strong rip current was identišed in the planned experiment area facing the Pacišc Ocean at Ajigaura Beach, Japan, and it was decided to perform a trial sand tracer experiment.
