REON has conducted first deployment and test cruise in the Hudson River with mobile monitoring system on August 26,2009. This system can acquire and visualize data measured by various submersible sensors on an undulating tow-body deployed behind a research vessel. Sensors mounted on the tow-body are  a particle sizer , a Dissolved Oxygen sensor , a CTD (Conductivity, Temperature and Depth) sensor and a fluorometer . Along with this water quality measuring sensors,  a downward-looking bottom-tracking Acoustic Doppler Current Profiler (ADCP) was installed on the starboard site of the research vessel to measure the vertical profile of water currents and the bathymetry of the river.

Tow-body on research vessel

Test and Deployment Research cruise on August 26, 2009:

Cruise photos

Cruise data

The mobile monitoring system can display each measured parameter intensity (measured value relative to a pre-set peak value) in real time and thereby guides in selecting the transect route to capture the event of interest. The figure below presents the snapshot of the real time data visualization graphical user interface (GUI) of the system. The lower middle panel of the GUI displays the color-coded trace line of the travel route whereas the upper middle panel shows the vertical variation of a water quality parameter along that route.  In this snapshot, it shows the relative water temperature (measured water temperature with respect to preset peak water temperature values) variation along the travel route but the user can select other parameters (e.g., DO (dissolved oxygen) salinity, total particle concentration, chlorophyll) for display by selecting the corresponding parameter tabs shown in the upper right most side of the GUI.