Profiles of non-tidal salinity at stations A and B.

<p>Profiles of non-tidal salinity at stations A and B.</p

Summary of tidal and river discharge conditions during the survey periods.

<p>Summary of tidal and river discharge conditions during the survey periods.</p

Profiles of non-tidal velocity at stations A and B.

<p>Profiles of non-tidal velocity at stations A and B.</p

Salt transport in the Espinheiro channel [kgm⁻¹s⁻¹].

<p>Letters (a) to (g) refer to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0047349#pone.0047349.e012" target="_blank">Equation 6</a> salt transport terms.</p

The Espinheiro channel showing the survey locations A and B.

<p>The Espinheiro channel showing the survey locations A and B.</p

Contour figures of salinity as a function of the non-dimensional depth (<i>Z</i>) and time for all survey periods.

<p><i>H</i> and <i>L</i> indicate the local high and low-water. (a) 21/02/2002 (station A); (b) 28/02/2002 (station A); (c) 15/01/2004 (station B); (d) 16/06/2004 (station B); (e) 27/08/2004 (station B); (f) 03/12/2004 (station B).</p

Physical processes related with the terms of equation 6.

<p>Physical processes related with the terms of <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0047349#pone.0047349.e012" target="_blank">equation 6</a>.</p

Contour figures of longitudinal velocity component as a function of the depth (Z) and time for all survey periods.

<p><i>H</i> and <i>L</i> indicate the local high and low-water. (a) 21/02/2002 (station A); (b) 28/02/2002 (station A); (c) 15/01/2004 (station B); (d) 16/06/2004 (station B); (e) 27/08/2004 (station B); (f) 03/12/2004 (station B).</p

Temporal variation of the layer Richardson number.

<p>The dotted lines (<i>Ri_L</i> equal to 2 and 20) are the limits of weak vertical stability.</p

River inputs of nitrate and chlorophyll.

<p>River inputs of nitrate and chlorophyll.</p