Global ETD Search
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 7 of 7 for “"thermospheric winds"”.
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Recommissioning REDDI: Reviving a Doppler Asymmetric Spatial Heterodyne Spectrometer for Observing Thermospheric Winds
… spectrometer could be used to accurately measure thermospheric winds by observing the Doppler shift of the 630nm emission of oxygen in the thermosphere. In 2015, we began a project to redesign the input optics of REDDI to repurpose the instrument from a demonstration unit to a long duration …
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Using a bistatic Fabry-Perot interferometer system to improve the estimation of thermospheric winds
… types of ESF events. It has been theorized that thermospheric winds have a substantial e ect on the growth rate of the RTI, but very little data has been gathered to verify or disprove this idea. This thesis proposes a method for synchronously using two ground-based Fabry-Perot interferometers …
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Tidal analysis of modeled thermospheric winds to improve agreement with measurements over South Africa
Made available in DSpace on 2019-08-23T19:51:48Z (GMT). No. of bitstreams: 4 CHU-THESIS-2019.pdf: 4866560 bytes, checksum: 017305d631eda57a27d64bc0c65b2b55 (MD5) LICENSE.txt: 4209 bytes, checksum: de0418cfda74c8bb803da2fe0b0b3c9c (MD5) RightsLink Printable License Elsevier.pdf: 199071 bytes, …
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Observations of the thermosphere using measurements from long-term Fabry-Perot interferometers
… and geomagnetic storms. As a compounding factor, thermospheric data have been historically lacking compared to the plentiful plasma datasets. Neutral wind and temperature data are needed to understand and validate the physics of the upper atmosphere. As satellites do not provide high-resolution …
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Automated Detection and Analysis of Low Latitude Nightside Equatorial Plasma Bubbles
… with the ambient plasma, zonal and meridional thermospheric winds observed by ICON's Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) instrument are analyzed in conjunction with the same EPBs to understand how winds coincident with EPBs behave. An analysis of …
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The mid-latitude ionosphere under quiet geomagnetic conditions: propagation analysis of SuperDARN radar observations from large ionospheric perturbations
… We also tested a potential mechanism involving thermospheric winds and geomagnetic field configuration which showed promising results and will require further modeling to confirm (Chapter 3). The second ionospheric feature was a type of decameter-scale irregularity associated with very low drift …
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Three-dimensional wind measurements and modeling using a bi-static Fabry-Perot interferometer system in Brazil
… to the midpoint of the two sites. Vector neutral winds in the horizontal plane can be computed at the two common volume points, and a vertical neutral wind can be found at the inline point. FPIs are phase-based instruments, meaning a zero-reference is needed in order to get an absolute wind …