Essays about: "methane dynamics"

Showing result 16 - 19 of 19 essays containing the words methane dynamics.

  1. 16. Estimating Erosion in Oil and Gas Pipe Line Due to Sand Presence

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Akar Abdulla; [2011]
    Keywords : CFD; Erosion; Solid particle impact; Multiphase flow ; Turbulence.;

    Abstract : Transporting solid particles in oil and gas flow cause erosion damage to the pipeline and fittings. The aim of this thesis is to study the effect of impact velocity on the erosion damage in 90 degree long elbow by using two different erosion models namely, Oka model and E/CRC model. READ MORE

  3. 17. Methane emission peaks from permafrost environments : using ultra–wideband spectroscopy, sub-surface pressure sensing and finite element solving as means of their exploration

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Norbert Pirk; [2009]
    Keywords : finite element solving; permafrost; ultra-wideband spectroscopy; sub-surface pressure sensing; methane emission; physical geography; geography; Earth and Environmental Sciences;

    Abstract : Metan är en effektiv växthusgas som har stor betydelse för det globala klimatet. Metanemissioner från våtmarker med underliggande permafrost anses bidra väsentligt till dynamiken som styr koncentrationen av metan i atmosfären på de nordliga breddgraderna. READ MORE

  4. 18. Mud volcanoes : a review

    University essay from Lunds universitet/Geologiska institutionen

    Author : Maria Åkesson; [2008]
    Keywords : mud volcanism; mud volcanoes; methane; climate dynamics; LUSI; Earth and Environmental Sciences;

    Abstract : Mud volcanoes are pathways through and within which buried argillaceous loose sediments and lithified rocks are altered and transported back to the Earth’s surface. The types of mechanisms of formation, maintenance and triggering of this natural, sedimentary recycling-process vary largely whereby external as well as internal properties of mud volcanoes differ greatly. READ MORE

  5. 19. The dynamics of non-methane hydrocarbons and other trace gas fluxes at a subarctic mire in northern Sweden

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Kristina Bäckstrand; [2004]
    Keywords : geomorfologi; naturgeografi; climatology; cartography; climate change; carbon cycle; physical geography; nodelling; pedology; geomorphology; marklära; kartografi; klimatologi; Earth and Environmental Sciences;

    Abstract : In the context of climate change, it is important to understand how the terrestrial carbon cycle is interacting with the anthropogenic increase in atmospheric carbon dioxide (CO2) concentration. Boreal and subarctic regions in the northern hemisphere are great carbon pools, as well as they are subject to predicted warming. READ MORE