Summary of seabed water depths and the frontal effect on temperature change in subareas of study areas A–E.

Temperature data was collected at CTD stations located along transects, at time-series stations, and at the starts and ends of video-drift stations. Subareas in each study area are numbered in an off-bank to on-bank direction (Figs. 2,3,4,5,6). Subarea widths are measured normal to the tidal front. The range of seabed temperatures experienced by each subarea is shown and indicates which subareas are affected by frontal movement. The largest temperature changes between high and low tide (ranging from 3.9 to 8.0oC) occurred in subareas that lie in a 11–14 km wide band that extends ∼100 km along the bank margin above 80 m water depth (Fig. 11). Table S3 expands this data by showing the frontal effect on temperature change in the subareas during flood and ebb tides.