Identifying or ruling out groundwater discharges into sediment and surface waters is often critical for evaluating impacts and for planning remedial actions. Information about subsurface structure and groundwater can be helpful, but imperfect information, heterogeneous materials, and the likelihood of preferential pathways make it difficult to locate seeps without direct seep monitoring. We pre...

the southeastern part of turkey is quite rich, fertile and mature in terms of hydrocarbonseepages. while the use of the related sources meet the energy demand, it damages the environment and humanhealth. in this study, several geochemical methods were applied to analyze the hydrocarbon sepage samplesobtained from seven towns in the province of adiyaman where is very close to the oil production ...

A non-Darcy flow with moving boundary conditions in a low-permeability reservoir was solved using the homotopy analysis method (HAM), which converted into fixed-boundary mathematical model via similarity transformation. Approximate analytical solutions based on HAM are guaranteed to be more accurate than exact solutions, relative errors between 0.0089% and 2.64%. When λ = 0, pressure drop of Da...

for non-darcy flow in submerged porous media a one- dimensional mathematical model has been developed. rockfill detention dams are one of these porous media that comprised of relatively homogenous coarse rockfill which can be used to reduce flood discharge and hydrograph peak. in this research the focus was on the rockfill detention dams in submerged condition. the existence of overtopping rock...

Despite a number of studies in areas of focused methane seepage, the extent of transitional sediments of more diffuse methane seepage, and their influence upon biological communities is poorly understood. We investigated an area of reducing sediments with elevated levels of methane on the South Georgia margin around 250 m depth and report data from a series of geochemical and biological analyse...