Fig. 3 | Scientific Reports

Fig. 3

From: Giant pit craters on the modern seafloor above magma-induced hydrothermal vent complexes of Scotia Sea, offshore Antarctica

Fig. 3

High-resolution seismic image of the subsurface beneath seafloor craters (A) Seismic line crossing the field of craters in a SW-NE direction as shown Fig. 2E. Circle insets show details of the reflective polarity of the main bottom simulating reflectors (BSRs) identified at regional scale in the study area. BSR-1 is characterized by a reverse polarity with respect to the seafloor polarity whereas BSR-2 has the same polarity as the seafloor. Both are breached and collapsed by fluid escape pipes beneath the crater fields A and B. (B) Detail of subsurface beneath the craters showing a fluid escape pipe breaching the two BSRs. HAR: High Amplitude Reflector within the pipes.

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