Search for dissertations about: "polar cap"
Showing result 1 - 5 of 15 swedish dissertations containing the words polar cap.
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1. Satellite observations of auroral acceleration processes
Abstract : Measurements with satellite and sounding rocket borne instruments contain important information on remote and local processes in regions containing matter in the plasma state. The characteristic features of the particle distributions can be used to explain the morphology and dynamics of the different plasma populations. READ MORE
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2. Climate and energy exchange on a sub-polar ice cap in summar : Arctic institute of North America Devon Island expedition 1961-1963
Abstract : .... READ MORE
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3. Energization and Acceleration of Dayside Polar Outflowing Oxygen
Abstract : This thesis deals with energetic oxygen ions (i.e. single-charged atomic oxygen ions, O+) at altitudes higher than 5 Earth radii (RE) and at latitudes above 75 (toward 90) degrees invariant latitude (deg ILAT) in the dayside polar magnetosphere observed by Cluster. READ MORE
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4. High altitude ion heating observed by the Cluster spacecraft
Abstract : This thesis deals with heating of outowing oxygen ions at high altitude above the polar cap using data from the Cluster spacecraft. oInospheric plasma may flow up from the ionosphere but at velocities which are low enough that the ions are still gravitationally bound. For the ions to overcome gravity, further acceleration is needed. READ MORE
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5. The role of auxin in abscission of organs and tissues
Abstract : Most deciduous trees drop their leaves before winter, a process which is referred to as leaf abscission. Leaf abscission is thought to be regulated by the action of auxin and ethylene. READ MORE