Our visualization explores the Frasier River, looking at the change in salinity levels when the river meets the ocean, creating a plume. This visualization uses data collected from deployed bouys, over a 10-day field campaign for several hours each day. On the top level, you can find four scatterplots, which compare surface salinity with different dimensions such as Water Temperature, Salinity at 1.2m, Bouy Drift Speed, and Wave Height.
You can select a subset of the data by clicking and dragging the cursor to form a box, which will then crossfilter the data across all visualizations. Wind direction was also visually encoded for the fourth scatterplot, with respect to true north (0=North, 180=South) We have also provided several controls on the middle level, which allow users to select a specific range of dates, data from specific buoys, and the option to view the map data which is located on the bottom level, over small multiples, with each invidual map representing data across a single day.
The map data on the bottom has two possible views, the large map which shows the bouy's position and salinity level measured across all days, and a smaller view for individual dates.