Results 111 to 120 of about 5,928 (256)

Methane hydrates and their HF doped analogues

, 2013
A computational study is carried out to simulate methane hydrates as well as to know the effect of HF doping on their stability and structure. By using ab initio molecular dynamics simulation interaction of methane with HF doped clathrate hydrates is ...
Giri, Santanab, Mondal, Sukanta, Chattaraj, Pratim Kumar   +2 more
core   +1 more source

High-resolution 3D seismic investigations of hydrate-bearing fluid escape chimneys in the Nyegga region of the Voring Plateau, Norway

, 2008
Hundreds of pockmarks and mounds, which seismic reflection sections show to be underlain by chimney-like structures, exist in southeast part of the Vøring plateau, Norwegian continental margin.
Ker, S., Nouze, H., Westbrook, G.K., Plaza, A., Minshull, T.A., Exley, R., Gailler, A., Jose, T.   +7 more
core  

Formation and Dissociation of CO2 and CO2-THF Hydrates Compared to CH4 and CH4-THF Hydrates.

, 2008
This work is part of a research project sponsored by the Italian Electricity Agency for CO2 disposal in form of hydrate. The dissociation behavior of CH4 hydrate was taken as a reference for the study of the CO2 hydrate preservation.
Politi, Monia, MACCIONI, Filippo, BROGGI, ALESSANDRA, GIAVARINI, Carlo, POLITI M.   +4 more
core  

Biogeochemical processes and microbial diversity of the Gullfaks and Tommeliten methane seeps (Northern North Sea). [PDF]

, 2008
Fluid flow related seafloor structures and gas seeps were detected in the North Sea in the 1970s and 1980s by acoustic sub-bottom profiling and oil rig surveys.
Shovitri, M., H. Niemann, K. Knittel, M. Shovitri, Hovland, M., Boetius, Antje, G. Wegener, Boetius, A., Niemann, H., Wegener, G., A. Boetius, Wegener, Gunter, Knittel, K., M. Hovland   +13 more
core  

Joint seismic and electrical measurements of gas hydrates in continental margin sediments

, 2008
EThOS - Electronic Theses Online ServiceGBUnited ...
Ellis, Michelle H, Ellis, Michelle H.
core  

Vertical distribution of methane oxidation and methanotrophic response to elevated methane concentrations in stratified waters of the Arctic fjord Storfjorden (Svalbard, Norway) [PDF]

, 2013
The bacterially mediated aerobic methane oxidation (MOx) is a key mechanism in controlling methane (CH₄) emissions from the world’s oceans to the atmosphere.
E. Helmke, E. Damm, S. Mau, J. Blees, Blees, Jan, H. Niemann, Niemann, Helge, Mau, Susan, Niemann, H., Blees, J., Mau, S., Damm, E., Helmke, E., Damm, Ellen   +13 more
core   +1 more source

Defect-enabled fast gas hydrate kinetics for energy and decarbonisation applications

Journal of CO2 Utilization
Gas hydrates are gas-carrying water structures with proven relevance to the sustainability future. Nature showcases these gas-carrying water structures through multi-trillion tones of methane encapsulated in natural gas hydrates (NGHs) on Earth ...
Ngoc N. Nguyen, Mirza Galib, Anh V. Nguyen, Praveen Linga   +3 more
doaj   +1 more source

Atomistic modeling of structure II gas hydrate mechanics: Compressibility and equations of state

AIP Advances, 2016
This work uses density functional theory (DFT) to investigate the poorly characterized structure II gas hydrates, for various guests (empty, propane, butane, ethane-methane, propane-methane), at the atomistic scale to determine key structure and ...
Thomas M. Vlasic, Phillip Servio, Alejandro D. Rey   +2 more
doaj   +1 more source

Tubular Carbonate Concretions from North Island, New Zealand: Evidence for Hydrocarbon Migration and the Subsurface Plumbing System of Cold Seeps

, 2009
Among the cold seep research community, it is now appreciated that tubular carbonate concretions are important indicators of hydrocarbon migration in the subsurface.
Nyman, Stephanie Leigh
core  

Freshwater lake to salt-water sea causing widespread hydrate dissociation in the Black Sea

Nature Communications, 2018
Gas hydrates are maintained via a balance of temperature and pressure, if this changes then destabilization may occur. Here, the authors show instead that due to recent changes in the salinity of the sea water of the Black Sea, gas hydrates may become ...
Vincent Riboulot, Stephan Ker, Nabil Sultan, Yannick Thomas, Bruno Marsset, Carla Scalabrin, Livio Ruffine, Cédric Boulart, Gabriel Ion   +8 more
doaj   +1 more source