Screen grab of the multibeam echo sounder water column display showing the plume (red arrow). The horizontal axis is across-track distance, and the vertical axis is water depth. The somewhat horizontal white line embedded in the red band is the seafloor acoustic return. The plume disappears from the water column at roughly 400 meter water depth.

Screen grab of the multibeam echo sounder water column display showing the plume (red arrow). The horizontal axis is across-track distance, and the vertical axis is water depth. The somewhat horizontal white line embedded in the red band is the seafloor acoustic return. The plume disappears from the water column at roughly 400 meter water depth. Image courtesy of the NOAA Okeanos Explorer Program.

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Return to Mendocino Ridge: U.S Extended Continental Shelf Project, Exploratory Mapping Expedition