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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 254 for “"Ionosphere"”.
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Gravity Waves in the Ionosphere
Made available in DSpace on 2014-12-10T19:06:37Z (GMT). No. of bitstreams: 1 7114703.pdf: 4056480 bytes, checksum: 8364296edaa297fe461b8f0058f611b1 (MD5) Previous issue date: 1970
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Cubesat Wakes in the Earth’s Ionosphere
… less understood for CubeSats.</p> <p>The Dynamic Ionosphere CubeSat Experiment (DICE) is a 1.5U CubeSat which recently ended its mission. DICE carried two fixed-bias Langmuir probes operating in the ion saturation regime that extended 180_ apart from each other on scissor booms. Since the CubeSat …
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Artificial heating of the lower ionosphere
The lower ionosphere has been heated in a controlled experiment at the Arecibo ionospheric Observatory. Deposition of energy from a 40 Mhz transmitter has approximately doubled the ambient electron temperature at an altitude of 80 km. Energy from the radio wave is deposited in the ionosphere as a …
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Electron-Collision Processes in the Ionosphere
Made available in DSpace on 2014-12-10T19:07:17Z (GMT). No. of bitstreams: 1 7412098.pdf: 14165766 bytes, checksum: d9d8246bd1adbe9f7663ed5e2a51c9ac (MD5) Previous issue date: 1973
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An Investigation of Ionosphere-Protonosphere Coupling
Made available in DSpace on 2014-12-09T18:33:59Z (GMT). No. of bitstreams: 1 6507101.pdf: 8997375 bytes, checksum: c41e4dd75731bd9e890e5846ac08eaae (MD5) Previous issue date: 1965
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Conductivity Modulation of Magnetosphere-Ionosphere Coupling
Earth's ionosphere is a region of the upper atmosphere that consists of an energetic and electromagnetically reactive plasma. This region plays an important role in over-the-horizon and satellite radio communications, satellite orbits, and can electrically couple into human infrastructure like …
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Theoretical studies of the mid-latitude ionosphere
… a brief description of the atmosphere and ionosphere in Chapter I we describe how the equations of continuity and momentum for 0+, H+, He+, 0++ are derived from the formulations of St-Maurice and Schunk(1977) and Quegan et al.(1981) in Chapter II. In Chapter III we investigate the nature of …
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Propagation of electromagnetic pulses in the ionosphere
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1942.
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Non-Linear Magnetosphere-Ionosphere Interactions at High Latitudes
… 3D electromagnetic coupling between the ionosphere and magnetosphere is investigated in this dissertation. The study is based on a non-linear, 3D, reduced magnetohydrodynamic model describing interaction between dispersive Alfven waves and the nightside high-latitude ionosphere. Results …
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A 3-D Model of the Auroral Ionosphere
<p>A new 3-D model of the high latitude ionosphere is developed to study the coupling of the ionosphere with the magnetosphere and neutral atmosphere. The model consists of equations describing conservations of mass, momentum and energy for the six ionospheric constituents (O+, NO+, N+2 , O+2 , N+ …
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A Dynamic Coupled Magnetosphere-Ionosphere-Ring Current Model
… magnetohydrodynamics (MHD) simulation, the MIX ionosphere solver and the Rice Convection Model (RCM). We report some results of the coupled model using idealized inputs and model parameters. The algorithmic and physical components of the model are described, including the transfer of magnetic …
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Gyro-Interaction Rocket Experiments in the Lower Ionosphere
Made available in DSpace on 2014-12-08T22:23:34Z (GMT). No. of bitstreams: 1 6500835.pdf: 3150213 bytes, checksum: a58080881421c40acf54943ae23b48dd (MD5) Previous issue date: 1964
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A Study of Traveling Disturbances in the Ionosphere
Made available in DSpace on 2014-12-08T22:24:48Z (GMT). No. of bitstreams: 1 7020942.pdf: 5749318 bytes, checksum: 76c5be40dc11e4ba5bc53978f4dbfb52 (MD5) Previous issue date: 1970
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Ion and electron temperatures in the topside ionosphere
… ion and electron temperatures in the topside ionosphere are investigated. Experimental results come from an analysis of incoherent-scatter data taken at Arecibo, Puerto Rico. Consideration of the energy balance equations gives the theoretical ion and electron temperatures. Two ions, 0+ and H+, …
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Topside ionosphere electron density concentration: observation and theory.
Thesis (Ph D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1970.
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Reverse Convection Potential Saturation in the Polar Ionosphere
… potentials in the day side high latitude ionosphere during periods of steady northward interplanetary magnetic field (IMF) are reported. While it has been shown that the polar cap potential in the ionosphere exhibits non-linear saturation behavior when the IMF becomes increasingly …
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Radio Propagation Through Density Irregularities in the Auroral Ionosphere
… propagating through a structured or turbulent ionosphere undergoes multiple effects, such as refraction, diffraction, etc., that distort the incident radio wave by inducing phase and amplitude fluctuations. These fluctuations are called<em> ionospheric</em><em> scintillation</em>. Scintillation …
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Numerical simulation of wave-plasma interactions in the ionosphere
Ionospheric modification by means of high-power electromagnetic (EM) waves can result in the excitation of a diverse range of plasma waves and instabilities. This thesis presents the development and application of a GPU-accelerated finite-difference time-domain (FDTD) code designed to simulate the …
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