Enhancement of electric and magnetic wave fields at density gradients
We use Freja satellite data to investigate irregular small-scale density variations. The observations are made in the auroral region at about 1000-1700 km. The density variations are a few percent, and the structures are found to be spatial down to a scale length of a few ion gyroradii....
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2006-03-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/24/367/2006/angeo-24-367-2006.pdf |
| Summary: | We use Freja satellite data to investigate irregular small-scale
density variations. The observations are made in the auroral region
at about 1000-1700 km. The density variations are a few percent, and the
structures are found to be spatial down to a scale length of a few ion
gyroradii. Irregular density variations are often found in an
environment of whistler mode/lower hybrid waves and we show that at
the density gradients both the electric and magnetic wave fields are
enhanced. |
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| ISSN: | 0992-7689 1432-0576 |