Gas hydrates are ice-like deposits containing a mixture of water and gas; the most common
gas is methane. Gas hydrates are stable under high pressures and relatively low …

Fluid pressure in excess of hydrostatic equilibrium, or overpressure, in offshore
environments is a widespread phenomenon that contributes to the migration and storage of …

Abstract In 2018, Guangzhou Marine Geological Survey conducted the fifth gas hydrate
drilling expedition (GMGS5) in the northwestern continental slope of South China Sea. We …

Sulfate-driven anaerobic oxidation of methane (SO 4-AOM) in marine sediments commonly
leads to the precipitation of pyrite. It is, however, frequently challenging to unequivocally …

Fluid escape pipes were first documented from 3D seismic data over a decade ago, and
have subsequently been identified in many petroliferous basins worldwide. They are …

Pockmarks form where fluids discharge through seafloor sediments rapidly enough to make
them quick, and are common where gas is present in near-seafloor sediments. This paper …

Soft-sediment deformation structures (SSDS) have been the focus of attention for over 150
years. Existing unconstrained definitions allow one to classify a wide range of features under …

The newly developed P-Cable 3D seismic system allows for high-resolution seismic imaging
to characterize upper geosphere geological features focusing on geofluid expressions (gas …

Focused fluid flow through sub-seabed sediments is a common phenomenon on continental
margins worldwide. However, the governing controls and timing of this fluid release have …

Submarine hydrocarbon seeps are geologically driven" hotspots" of increased biological
activity on the seabed. As part of the HERMES project, several sites of natural hydrocarbon …