Sonar frequency color map on the left and an orange sonar scan on the right against black.
ADCP and Sonar Seep Images
Image courtesy of Characterizing Variability in Pacific Northwest Methane Seeps Using a Fleet of Small AUVs.
Download largest version (png, 2.18 MB).

Acoustic Doppler current profiler (ADCP) data showing vertical structure with greater acoustic backscatter intensity and presumably bubble concentrations near the top of the plume (left) and an image of the seep from the BlueView sonar (right).