Dissertation/ Thesis
Solar wind structures impact on Earth radiation belts. ; Impact des structures du vent solaire sur les ceintures de radiation terrestres
| العنوان: | Solar wind structures impact on Earth radiation belts. ; Impact des structures du vent solaire sur les ceintures de radiation terrestres |
|---|---|
| المؤلفون: | Benacquista, Rémi |
| المساهمون: | ONERA - The French Aerospace Lab Toulouse, ONERA, INSTITUT SUPERIEUR DE L'AERONAUTIQUE ET DE L'ESPACE (ISAE), UNIVERSITE DE TOULOUSE, Daniel BOSCHER |
| المصدر: | https://hal.science/tel-01701204 ; Physique de l'espace [physics.space-ph]. INSTITUT SUPERIEUR DE L'AERONAUTIQUE ET DE L'ESPACE (ISAE); UNIVERSITE DE TOULOUSE, 2017. Français. ⟨NNT : ⟩. |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2017 |
| المجموعة: | ONERA: HAL (Centre français de recherche aérospatiale / French Aerospace Lab) |
| مصطلحات موضوعية: | RADIATION BELTS, CORONAL MASS EJECTION, COROTATION INTERACTION REGIONS, MAGNETOSPHERE, CEINTURES DE RADIATION, ÉJECTIONS DE MASSE CORONALE, RÉGIONS D'INTERACTION EN COROTATION, [PHYS.PHYS.PHYS-SPACE-PH]Physics [physics]/Physics [physics]/Space Physics [physics.space-ph] |
| الوصف: | The radiation belts are the toroidal region within the inner magnetosphere where high energetic particles are located and potentially harmful for the spacecrafts. The coupling between the solar wind and the magnetosphere leads to strong variations of particle fluxes that can therefore increase or decrease over several orders of magnitude. The fluxes can reach very high levels within various time spans. The aim of this thesis is to observe and characterize the variations of fluxes during the crossing of several types of events originating from the sun such as Corotating Interaction Regions (CIRs) and Interplanetary Coronal Mass Ejections (ICMEs). To do so, we processed and analyzed the data of various types : solar wind parameters, geomagnetic indices, and electron fluxes within the radiation belts. In the three first chapters, we report on the complexity of the Terrestrial space environment and we present the Solar-Terrestrial system and the data used. Then, our work is organized around four chapters. First, we characterized the electron fluxes within the radiation belts as measured by the NOAA-POES spacecrafts. Then, we studied the di˙erence between the variations of fluxes caused by the CIRs and the ICMEs depending on the energy and the L* parameter. After establishing strong links between the intensity of magnetic storms and the variations of fluxes, we focused on the ICMEs and the variability of the related magnetic storms. Eventually, we emphasized the importance of the sequences of events. After quantifying the trend of the ICMEs to form sequences, we performed a statistical study on the magnetic storms caused by such sequences. Finally three study cases were performed in order to illustrate the various possible e˙ects on the radiation belts. ; Les ceintures de radiation correspondent à la région toroïdale de la magnétosphère interne dans laquelle se trouvent les particules de hautes énergies, potentiellement néfastes pour les satellites. Le couplage entre le vent solaire et la magnétosphère donne lieu à ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | French |
| Relation: | tel-01701204; https://hal.science/tel-01701204; https://hal.science/tel-01701204/document; https://hal.science/tel-01701204/file/DFIE18001.1515085311.pdf |
| الاتاحة: | https://hal.science/tel-01701204 https://hal.science/tel-01701204/document https://hal.science/tel-01701204/file/DFIE18001.1515085311.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.708F3DD5 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |