Conference
Spectral Broadening of NWC Transmitter Signals in the Ionosphere
| العنوان: | Spectral Broadening of NWC Transmitter Signals in the Ionosphere |
|---|---|
| المؤلفون: | Xia, Z., Chen, L., Zhima, Z., Parrot, M. |
| المساهمون: | Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Centre National de la Recherche Scientifique (CNRS)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Centre National de la Recherche Scientifique (CNRS)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES) |
| المصدر: | American Geophysical Union ; https://insu.hal.science/insu-03560081 ; American Geophysical Union, 2020, Online, France. 18 pp |
| بيانات النشر: | CCSD |
| سنة النشر: | 2020 |
| المجموعة: | Université d'Orléans: HAL |
| مصطلحات موضوعية: | Energetic particles: precipitating, MAGNETOSPHERIC PHYSICS, Magnetosphere: inner, Plasma waves and instabilities, Radiation belts, [SDU]Sciences of the Universe [physics] |
| جغرافية الموضوع: | Online, France |
| الوصف: | International audience ; In this study, we use about 6.5 years of observation of Detection of Electromagnetic Emissions Transmitted from Earthquake Regions (DEMETER) satellite to study the spectral broadening of NWC ground transmitter signals and examine key parameters that control the width and intensity of the broadening power. First, we analyze a typical spectral broadening event, with enhanced wave intensity between lower hybrid resonance frequency and NWC signal frequency (19.8 kHz). The width and intensity of broadening power are positively proportional to the NWC wave amplitude. A following statistical analysis reveals a similar dependence on the NWC wave amplitude. The statistical analysis also indicates a significantly negative correlation of broadening spectral intensity and width with the background plasma density. The observations are consistent with existing theories predicting that lower plasma density drives a lower threshold for spectral broadening. |
| نوع الوثيقة: | conference object |
| اللغة: | English |
| Relation: | BIBCODE: 2020AGUFMSM013.09X |
| الاتاحة: | https://insu.hal.science/insu-03560081 |
| رقم الانضمام: | edsbas.75D5494F |
| قاعدة البيانات: | BASE |
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