Map of study areas A-E and numbered subareas with tidal temperature changes.

<p>Values in each subarea are changes in seabed temperature (°C) during tidal front movement off bank (flood tide) and on bank (ebb tide) during the August 4–13, 2009 time period. Shaded subareas represent regions of greatest effect on seabed temperature (40 to 80 m depth interval). Unshaded subareas represent regions of lesser tidal effect on temperatures (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0055273#pone-0055273-t005" target="_blank">Tables 5</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0055273#pone.0055273.s003" target="_blank">S3</a> for details). The frontal zone is the area where seabed temperature is changed >1°C by tidal movement of the front. Square black markers indicate the approximate positions of the frontal boundary (i.e. the transition from a stratified to a mixed water column) along each of the linear transects during high tide (HT) and low tide (LT). The area between HT and LT is the frontal boundary zone. Numbers in rectangles and bathymetry are as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0055273#pone-0055273-g001" target="_blank">Fig. 1</a>.