Seismic Diffraction Analysis of a Fluid Escape Pipe beneath the Submarine Gas Bubble Plume in the Haima Cold Seep Area

Figure 14

Proposed fluid migration genetic process based on the analysis of diffraction. (a) In the first stage, gas accumulates below the BSR. (b) As the pressure increases, gas pierces into the gas hydrate stability zone and gas pocket forms. (c) In stage 3, some of the gas is trapped as gas hydrate and some migrates upward into the water column. Blue ovals with small size indicate free gas or gas bubbles. The larger blue ovals are gas pockets.