Katamzi-Joseph, ZT;
Aruliah, AL;
Oksavik, K;
Habarulema, JB;
Kauristie, K;
Kosch, MJ;
(2019)
Multi-instrument observations of large-scale atmospheric gravity waves/traveling ionospheric disturbances associated with enhanced auroral activity over Svalbard.
Advances in Space Research
, 63
(1)
pp. 270-281.
10.1016/j.asr.2018.08.042.
Preview |
Text
Aruliah_ASR_Svalbard_AGWs_TIDs-revised-nolineno.pdf - Accepted Version Download (798kB) | Preview |
Abstract
This study reports on observations of large-scale atmospheric gravity waves/traveling ionospheric disturbances (AGWs/TIDs) using Global Positioning System (GPS) total electron content (TEC) and Fabry–Perot Interferometer's (FPI's) intensity of oxygen red line emission at 630 nm measurements over Svalbard on the night of 6 January 2014. TEC large-scale TIDs have primary periods ranging between 29 and 65 min and propagate at a mean horizontal velocity of ∼749–761 m/s with azimuth of ∼345–347° (which corresponds to poleward propagation direction). On the other hand, FPI large-scale AGWs have larger periods of ∼42–142 min. These large-scale AGWs/TIDs were linked to enhanced auroral activity identified from co-located all-sky camera and IMAGE magnetometers. Similar periods, speed and poleward propagation were found for the all-sky camera (∼60–97 min and ∼823 m/s) and the IMAGE magnetometers (∼32–53 min and ∼708 m/s) observations. Joule heating or/and particle precipitation as a result of auroral energy injection were identified as likely generation mechanisms for these disturbances.
| Type: | Article |
|---|---|
| Title: | Multi-instrument observations of large-scale atmospheric gravity waves/traveling ionospheric disturbances associated with enhanced auroral activity over Svalbard |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.asr.2018.08.042 |
| Publisher version: | https://doi.org/10.1016/j.asr.2018.08.042 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Atmospheric gravity waves, Traveling ionospheric disturbances, Substorm, Aurora, Arctic polar cap, ANGWIN |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10062703 |
Archive Staff Only
 |
View Item |
