A new analytical solution of the flow equation has been developed to estimate the time to reach a near-equilibrium state in mixed aquifers, i.e., having unconfined and confined portions, following a large hydraulic perturbation. Near-equilibrium is defined as the time for an initial aquifer pert...
Solute-induced river syndromes have grown in intensity in recent years. Here we investigate seven such river syndromes (salinization, mineralization, desalinization, acidification, alkalization, hardening, and softening) associated with global trends in major solutes (Ca2+, Mg2+, Na+, K+, SO42−,...
Figure 2a shows only PCO2 versus T, however p and T values used in simulations are correlated, since we assume hydrostatic and geothermal depth-dependence. Elevated PCO2 of groundwater in deep-seated aquifers is maintained over time by large CO2 fluxes originating, for example, from deep ...
Distribution and activity of methanogens and homoacetogens in deep granitic aquifers at Aspo Hard Rock Laboratory, Sweden 1998, FEMS Microbiology Ecology Show abstract Microbial life in deep granitic rock 1997, FEMS Microbiology Reviews Show abstract Biotite dissolution at 25°C: The pH dependence of...
Hydrogeology, Log Analysis, and Hydrochemistry of Unconsolidated Aquifers South of El-Sadat City, Egypt Agricultural and urban growth has increased the demands on groundwater supplies in areas east and west of the Nile Delta. The study area is about 80 km nor... MG Atwia,AA Hassan,SA Ibrahim...
Dilute waters (<20 g l1 TDS) migrated approximately 110 km laterally into the Devonian carbonate aquifers, significantly depressing the freshwater-saline water mixing zones. These results are consistent with 14C ages and oxygen isotope values of confined groundwaters in Devonian carbonates along the ...
In principle, salt caverns, salt domes, oil and gas reservoirs, and aquifers are concerned environments. In the 1970s, scholars researched the possibility of hydrogen storage underground and then proved the feasibility in technical and economic. However, underground hydrogen storage (UHS) was not ...
Natural hybridization is rare in the family Ictaluridae. Putative hybrids of the madtoms and were collected from Blackwater River, Monongahela River draina... SA Welsh,DA Cincotta - 《Northeastern Naturalist》 被引量: 12发表: 2004年 Ground-water quality and geochemistry of aquifers associated with...
(DOC) to the Arctic Ocean3,4. Although most studies agree that a warmer climate will intensify the carbon cycle in high latitude watersheds, estimates of future terrestrial carbon transport in these rivers are variable and uncertain. While some studies predict a several fold increase in high ...
enriched) (‰ Vienna Pee Dee Belemnite, VPDB). End-members are adopted from refs.37,38. The box plot shows median and quartile δ13C-DIC compositions repeatedly sampled across the 12 Swiss sites (n = 134; 7–15 samples per stream) (calculated in JMP 13, SAS Institute Inc., USA...