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Showing 1 to 20 of 54 for “"magnetospheric"”.
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Wavelet analysis of ULF magnetospheric waves
<p>Wavelet analysis is used to analyze magnetometer data and is compared to the traditional spectrogram technique, in particular, with respect to structured Pc 1--2 emissions. This results in the conclusion that the frequency modulation evident in Pearl pulsations is not continuous, but is …
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Remote sensing of Jupiter's magnetospheric dynamics
… presents and examines evidence of Jupiter’s magnetospheric dynamics, pri- marily using Hubble Space Telescope images of the planet’s ultraviolet aurora. The first two studies discuss the radial transport of hot plasma injections from reconnection return flow. The auroral evidence for a global …
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Energetic particles in the earth's magnetospheric cusps
… region could be a significant contributor to magnetospheric dynamics. The goal of this thesis is to answer the question, what is the source of the energetic particle population in the cusp? Since the initial observations measuring the energetic component were made, the source of the energetic …
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Effects of ionospheric oxygen on magnetospheric structure and dynamics
… O + can contribute a significant fraction of the magnetospheric mass and energy densities. The global response of Earth's magnetosphere to the presence of ionospheric oxygen is still largely unknown and impossible to examine fully with in situ , single point satellite measurements. Global …
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Radiation of VLF/ELF waves from a magnetospheric tether
… Ion Cyclotron Waves (EMIC) from a high-voltage magnetospheric tether, which are the waves proposed to scatter protons. The plasma is anisotropic due to the external Earth's magnetic field and it is assumed to have sufficiently low density, temperature and degree of ionization so that collisions …
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Quantitative modeling of time-dependent phenomena in the magnetospheric magnetic field
… is used to explore a number of time-dependent magnetospheric phenomena. In simulations of the March 1998 magnetic storm, the new model displays an improved representation of the inner magnetosphere, accurately predicting both storm-induced variations and day-night asymmetry in the field at …
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An analytical relationship between the magnetospheric potential drop and the ionospheric conductance
… an analytical relationship between the Earth's magnetospheric potential drop and the ionospheric conductance by adopting a simple two-dimensional model of a magnetic field draping around the tail magnetopause. Two methods are used: (1) matching currents through the tail magnetopause and the …
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Study of the electron component of the solar wind and magnetospheric plasma
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Physics.
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A Three-Year Study of the Magnetic Field Fluctuations in the Magnetospheric Cusp
<p>The high-altitude magnetospheric cusps are regions of significant magnetic field turbulence. There are also magnetic field fluctuations that cannot be called turbulence. Some of the low frequency fluctuations observed in the cusp have been shown to be motion of the cusp structure by the …
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Ionospheric Disturbances: Midlatitude Pi2 Magnetospheric ULF Pulsations and Medium Scale Traveling Ionospheric Disturbances
… at Blackstone, Virginia are used to observe magnetospheric Pi2 ultra low frequency (ULF) pulsations in the vicinity of the plasmapause. Prior to these pulsations, two Earthward moving fast plasma flows were detected by spacecraft in the magnetotail. Signatures of inner magnetospheric …
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High-latitude coupling processes between thermospheric circulation and solar wind driven magnetospheric currents and plasma convection
The high-latitudinal thermospheric processes driven by the solar wind and Interplanetary Magnetic Field (IMF) interaction with the Earth magnetosphere are highly variable parts of the complex dynamic plasma environment, which represent the coupled Magnetosphere – Ionosphere – Thermosphere (MIT) …
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A Measure of the Hurst Exponent Variability on Ground Based Magnetometer Data for Quiet and Active Magnetospheric Periods
… were classified into periods of quiet and active magnetospheric activity. Those periods classified as quiet required that Kp < 1 for not less than 48 consecutive hours and active periods required a Kp > 4 for not less than 24 consecutive hours. Detrended fluctuation analysis was employed to …
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The effects of inductive electric field on the spatial and temporal evolution of the inner magnetospheric ring current
Made available in DSpace on 2021-03-05T21:38:01Z (GMT). No. of bitstreams: 2 LIU-THESIS-2020.pdf: 12573341 bytes, checksum: 5293a966df4f9376e751643cd04d98db (MD5) LICENSE.txt: 4210 bytes, checksum: e2c7b26887fb19eefa338d64dd85a467 (MD5) Previous issue date: 2020-11-25
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A Method to Compute Three Dimensional Magnetospheric Equilibria with Dipole Tilt and its Application in Estimating Magnetic Flux Tube Volume
… model, which was developed for computing the magnetospheric equilibrium that includes an arbitrary Earth's dipole tilt and interplanetary magnetic field. We also describe the algorithms of this new friction code that trace magnetic field lines, locate the neutral sheet, and identify the …
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MODELING OF PLASMA-SHEET CONVECTION: IMPLICATIONS FOR SUBSTORMS (MAGNETOSPHERE)
… using several quantitative models of the Earth's magnetospheric magnetic field. These results suggest that plasma-sheet convection is necessarily time dependent. If flux tubes are to convect adiabatically Earthward, the confining magnetic pressure in the tail lobes must increase with time, and the …
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Ionospheric Convection and Auroral Responses to Solar Wind Driving
… chapters, specific events within the ECPC, or magnetospheric modes, are put into the context of solar wind driving and the auroral response. Substorms are a sporadic magnetospheric response mode, where the polar cap expands at first, followed by a distinct nightside brightening of the aurora …
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Ion Temperatures in Earth's Inner Magnetosphere: Ring Current Dynamics, Transient Effects, and Data-Model Comparisons
… internal and external drivers. In general, magnetospheric systems can be understood as a balance between multiple regions which all exhibit unique plasma properties. The feedback processes between each region depend on geomagnetic activity levels and the preceding states of the solar wind …
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