Review of Methane Seepages in the Okinawa Trough: Progress and Outlook

Figure 4

The morphological and hydroacoustic features surrounding the cold seeps of the Okinawa Trough. (a, b) Dome-like and ridge-like positive reliefs and their nearby backscattering features at the level of the seabed (modified from [15]). (c) Acoustic flares above the cold seeps (from [16]). (d) Gas plumes indicating the escape of free gases from marine sediments (from [14]).

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