Space Weather Event Modeling of Plasma Injection Into the Inner Magnetosphere with the Rice Convection Model

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dc.contributor.advisorSazykin, Stanislaven_US
dc.creatorSong, Yangen_US
dc.date.accessioned2013-03-08T00:39:06Zen_US
dc.date.available2013-03-08T00:39:06Zen_US
dc.date.issued2011en_US
dc.description.abstractThe inner magnetosphere modeling is an important component of the magnetosphere simulation frameworks with significant implications for space weather and a. principle methodology to understand the magnetospheric response to changes in the solar wind. The thesis shows our efforts in constructing and validating the contemporary Rice Convection Model (RCM) code and its interface as a next-generation code to predict electric fields, field-aligned currents, and energetic particle fluxes in the inner magnetosphere and subauroral ionosphere during geomagnetic disturbed times. The RCM was used to simulate the geomagnetic storms with fixed boundary conditions of time-dependent Tsyganenko-Mukai boundary conditions. This work shows the results of two extremely- strong storm events with significant interchange motion. The ring current injection predicted by the RCM is shown to be overestimated, consistent with the previous results of overestimating particle fluxes by the RCM. This effect is magnified here since the southward component of interplanetary magnetic field is very strong reaching about 50 nT. Time-dependent Borovsky's boundary condition is implemented and used to alleviate the huge pressure and get better tendency of ring current energy calculated by the Dessler-Parker-Sckopke relation. This work also describes a new module of generalized Knight's relation to compute the parallel potential drops from the calculated field-aligned currents through Vasyliunas equation. It gives different ionospheric conductance and plasma drift signatures particularly around the midnight. The inclusion of parallel electric fields will replace the treatments of energy flux in the substorm simulations since that the Hardy normalization cannot perform the desired function during the substorm expansion phase and the energy flux floor gives arbitrary enhanced the precipitating energy flux and ionospheric conductances at high latitude especially for the westward clectrojet around the midnight. Since the original Knight's relation gives too large field-aligned potential drop, the modified Knight's relation is applied and implemented successfully into the RCM. Therefore, the RCM is capable of real time event simulation including strong geomagnetic storms and magnetospheric substorms, although full validation of model predictions with typical observations remains to be done.en_US
dc.format.extent431 p.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoTHESIS PHYS. 2010 SONGen_US
dc.identifier.citationSong, Yang. "Space Weather Event Modeling of Plasma Injection Into the Inner Magnetosphere with the Rice Convection Model." (2011) Diss., Rice University. <a href="https://hdl.handle.net/1911/70447">https://hdl.handle.net/1911/70447</a>.en_US
dc.identifier.digitalSongYen_US
dc.identifier.urihttps://hdl.handle.net/1911/70447en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectApplied sciencesen_US
dc.subjectPure sciencesen_US
dc.subjectPlasma injectionen_US
dc.subjectMagnetosphereen_US
dc.subjectRice convection modelen_US
dc.subjectGeomagnetic stormsen_US
dc.subjectSpace weatheren_US
dc.subjectElectromagneticsen_US
dc.subjectPlasma physicsen_US
dc.subjectComputer scienceen_US
dc.titleSpace Weather Event Modeling of Plasma Injection Into the Inner Magnetosphere with the Rice Convection Modelen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentPhysicsen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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