Storm-induced flow fields produced temporal variations in the shapes of 72 consecutive time-averaged suspended sediment concentration profiles, in the lowest 1 m of a bottom boundary layer on the inner continental shelf off the south shore of Long Island. Different combinations of wave and current flows existed with variations in the magnitude of the horizontal current up to 30 cm/s and between 5 and 80 cm/s in the rms horizontal wave velocities. Pattern recognition method are implemented in order to identify the nonperiodic changes in the profile shape. A similarity analysis of these concentration profiles indicates that almost all the profiles in the data have the same shape which varies during storm periods within an amplification and/or translation fator. These two factors reflect the different storm-generated flows and define periods as well as rates of resuspension and deposition during such events. The concentration versus depth relationship for the fundamental profile shape is semilogarithmic. A summary analysis of this profile shape as well as its temporal variation is also presented, especially as regards how changes of the amplification and translation factors relate to the physics. ¿American Geophysical Union 1990 |