A tomographic Investigation of mid-latitude nighttime ionospheric E-F coupling
Abstract
In this paper, a time dependent computerized ionospheric tomography (CIT) technique (in four dimension, 4-D) is utilized in examining the theoretically proposed E-F coupling during nighttime mid-latitude instabilities. To facilitate CIT, we utilize data from a dense Global Positioning System Earth Observation Network (GEONET) of more than 1000 receivers with average distance between two neighboring points being 25-30 km. Results show an existence of field aligned structures in both E and F regions, with wave fronts aligned NW-SE and propagating southwestward (in the Northern hemisphere). This result is in agreement with theory and simulation studies. Furthermore, in most cases, instabilities were first noticed in the E-region and later in the F-region.
- Publication:
-
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018
- Bibcode:
- 2018cosp...42E3230S