Search Results - subject:"sediments"

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Analyzing and distribution of polychlorinated biphenyls (PCBs) in sediments along Shatt Al-Arab Estuary, Iraq

Al-Zabad, Rafid A.; Al-Khafaji, Ayad H.; Al-Saad, Hamid T. - In: Technology audit and production reserves 4 (2024) 3/78, pp. 33-38

Persistent link: https://www.econbiz.de/10015078709

Methane Flux and Authigenic Carbonate in Shallow Sediments Overlying Methane Hydrate Bearing Strata in Alaminos Canyon, Gulf of Mexico

Smith, Joseph P.; Coffin, Richard B. - In: Energies 7 (2014) 9, pp. 6118-6141

-derived carbon in shallow sediments overlying the hydrate bearing strata. When integrated with stable carbon isotope ratios of DIC …, high-resolution geochemical characterization of the biogeochemical cycling of methane-derived carbon in shallow sediments … hydrate distributions in gas hydrate bearing marine sediments. …

Persistent link: https://www.econbiz.de/10010945710

Experimental Study on Methane Hydrate Dissociation by Depressurization in Porous Sediments

Xiong, Lijun; Li, Xiaosen; Wang, Yi; Xu, Chungang - In: Energies 5 (2012) 2, pp. 518-530

Based on currently available data from site measurements in the Shenhu Area of the South China Sea, methane hydrate dissociation behavior by depressurization is studied in a one-dimensional experimental apparatus. According to time variation of temperature, resistance and gas production, the...

Persistent link: https://www.econbiz.de/10010676085

The Global Inventory of Methane Hydrate in Marine Sediments: A Theoretical Approach

Wallmann, Klaus; Pinero, Elena; Burwicz, Ewa; Haeckel, … - In: Energies 5 (2012) 7, pp. 2449-2498

The accumulation of methane hydrate in marine sediments is controlled by a number of physical and biogeochemical … generation in marine sediments, sediment compaction and the ascent of deep-seated pore fluids and methane gas into the GHSZ. Our … deep biosphere (4−25 × 10<sup>12</sup> g C yr<sup>−1</sup>) and the inventory of methane hydrates in marine sediments …

Persistent link: https://www.econbiz.de/10011031355

Nitrate, Total Ammonia, and Total Suspended Sediments Modeling for the Mobile River Watershed

Alarcon, Vladimir J.; Sassenrath, Gretchen F. - In: International Journal of Agricultural and Environmental … 8 (2017) 2, pp. 20-31

sediments at the outlet of the watershed. The model is capable of simulating Nitrate (NO3), Total Ammonia (TAM), and Total … Suspended Sediments (TSS) for extended periods of time at a daily temporal resolution (1970-1995). The Hydrological Simulation …

Persistent link: https://www.econbiz.de/10012042769

Metalliferous sediments in the Atlantis II Deep: Assessing the geological and economic resource potential and legal constraints

Bertram, Christine; Krätschell, Anna; O'Brien, Killian; … - 2011

To date, mineral resources are only mined on land but projected increases in demand have brought the exploration and exploitation of marine mineral resources back into focus. The Atlantis II Deep, located in the central Red Sea between Saudi Arabia and Sudan, is one of the largest marine sulfide...

Persistent link: https://www.econbiz.de/10010285484

A Parametric Model for Estimating Costs for Remediating Contaminated Sediment Sites Using a Dredging Method - A Budgetary & Planning Tool for Decision-Makers

Rosengard, John; Wallace, Jeff; Otten, Mark; MacDonald, … - 2010

Contaminated sediments, whether in freshwater or marine systems, pose a significant environmental challenge both within …

Persistent link: https://www.econbiz.de/10009468025

Evaluation of gas production from methane hydrates using depressurization, thermal stimulation and combined methods

Song, Yongchen; Cheng, Chuanxiao; Zhao, Jiafei; Zhu, Zihao - In: Applied Energy 145 (2015) C, pp. 265-277

To investigate the gas production from methane hydrate-bearing sediments, the gas production processes from methane …

Persistent link: https://www.econbiz.de/10011263245

Impact of sediments on wear performance of critical sliding components of hydrokinetic devices

Ali, M.; Ravens, T.; Petersen, T.; Bromaghin, A.; Jenson, S. - In: Renewable Energy 80 (2015) C, pp. 498-507

The work discussed here is a continuation of the study presented in [1], in which a customized test apparatus was presented that was capable of conducting tribological related experiments on sliding components commonly used in hydrokinetic devices such as bearings, drive shaft and seals. The...

Persistent link: https://www.econbiz.de/10011263761

Trivariate Frequency Analyses of Peak Discharge, Hydrograph Volume and Suspended Sediment Concentration Data Using Copulas

Bezak, Nejc; Mikoš, Matjaž; Šraj, Mojca - In: Water Resources Management 28 (2014) 8, pp. 2195-2212

Copula functions are often used for multivariate frequency analyses, but discharge and suspended sediment concentrations have not yet been modelled together with the use of 3-dimensional copula functions. One hydrological station from Slovenia and five stations from USA with watershed areas from...

Persistent link: https://www.econbiz.de/10010997316