Figure 10.17 Trajectories that spilled rubber duckies would have followed had they been spilled on January 10 of different years. Five trajectories were selected from a set of 48 simulations of the spill each year between 1946 and 1993. The trajectories begin on January 10 and end two years later (solid symbols). Grey symbols indicate positions on November 16 of the year of the spill. Hence the grey circle gives the location where rubber ducks first came ashore near Sitka. The code at lower left gives the dates of the trajectories. From Ebbesmeyer and Ingraham (1994).