Numerous articles have recently reported on gas seepage offshore Svalbard, because the gas emission from these Arctic sediments was thought to result from gas hydrate dissociation, possibly triggered by anthropogenic ocean warming. We report on findings of a much broader seepage area, extending from 74° to 79°, where more than a thousand gas discharge sites were imaged as acoustic flares. The g...

Is the recently found seepage groundwater on Mars pure H2O, or mixed with salts and other antifreeze compounds? Given the surface conditions of Mars, it is unlikely that pure water could either exist in its liquid state or have shaped Mars’ fluid erosional landforms (gullies, channels, and valley networks). More likely is that Mars’ seepage groundwater contains antifreeze and salt compounds tha...

Failure behavior of granite material is paramount for host rock stability of geological repositories for high-level waste (HLW) disposal. Failure behavior also affects the seepage behavior related to transportation of radionuclide. Few of the published studies gave a consistent analysis on how confinement and water pressure affect the failure behavior, which in turn influences the seepage behav...

Anaerobic microbial hydrocarbon degradation is a major biogeochemical process at marine seeps. Here we studied the response of the microbial community to petroleum seepage simulated for 190 days in a sediment core from the Caspian Sea using a sediment-oil-flow-through (SOFT) system. Untreated (without simulated petroleum seepage) and SOFT sediment microbial communities shared 43% bacterial genu...

There are various evaluation methods available for the discharge rate passing from the body of dam 1) Analytical methods, 2) Numerical methods and 3) Experimental methods. In the initial stages of dam design, it is necessary to approximately calculate the seepage and board of the project. In this research, almost 600 geometric models have been considered for embankment dam with clay core which ...

Modeling seepage problems in rock fractures is an interesting research approach to evaluating slope instability that attracting increasing attention. In the present study, a coupled seepage–deformation model based on numerical manifold method (NMM) proposed, and flow of groundwater fracture network with effects pressure deformation are discussed. A global equilibrium equation system local facto...