File:S41598-018-36781-7-fig2.webp

English: (A) Seismic profile A-A′ from the headwall through the submarine landslide source area and deposit. The deposit originated above the brine pool but now lies at the bottom of the brine pool. (B) Interpreted seismic profile A-A′. The submarine landslide initiated at the toe of the landslide directly above the crest of the salt ridge. After the initial failure, the slide then retrogressively failed in the upslope direction (left) to its present-day headscarp position. The source area is clean with little debris remaining. The presence of gas hydrates is suggested by the discontinuous bottom simulating reflector especially obvious on the right side of the seismic line. The BSR intersects the fault plane that links to the original headscarp and to the top of salt. The chaotic seismic facies of the deposits suggests that this landslide was a relatively high-mobility style of failure that likely moved rapidly.