Salinity measurements in the Mekong Delta

On two different dates, Apr-1st and April-9th of 2016, respectively during neap and spring tides, we measured salinity structures and intrusion lengths, simultaneously along the two channels. Starting from the estuary mouth during the slack tide, we sailed upstream along the thalweg at approximately 30 km hr-1 125 (i.e., approximate tidal propagation speed) and at intervals of every 3 km measured salinity over depth (See Figure 1b for the salinity routes). Salinity was transformed to PSU from conductivity [µS cm-1] and temperature [°C] measurements made by of the conductivity sensors (SensorNet TetraCon 700 IQ).