an air bubble that will compress and expand, thus propagating a pressure wave that will travel to the sea bottom and bounce back once as it hits the boundaries between the floor’s layers. When the sound waves reach the surface, an array of hydrophones (called a streamer) will pick up the signal.
The science team will create new impulses in timed intervals, while R/V Falkor moves forward. By combining all of the signals perceived during a given travel distance, the scientists will be able to recreate a 2D image of the subfloor geology.