Medium-Scale Traveling Ionospheric Disturbances and Plasma Bubbles Observed by an All-Sky Airglow Imager at Yonaguni, Japan
We report on night time air glow imaging observations of the low latitude ionosphere by means of a 630-m all-sky imager in stalled in March 2006 at Yonaguni, Japan (24.5°N, 123.0°E; 14.6°N geomagnetic), about 100 km east of Taiwan. The imager detected medium-scale traveling ionospheric disturbances...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Springer
2009-01-01
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| Series: | Terrestrial, Atmospheric and Oceanic Sciences |
| Subjects: | |
| Online Access: |
http://tao.cgu.org.tw/images/attachments/v201p287.pdf
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| _version_ | 1828338622726668288 |
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| author | Tadahiko Ogawa Yuichi Otsuka Kazuo Shiokawa Takuya Tsugawa Akinori Saito Kazuaki Hoshinoo Keisuke Matunaga Minoru Kubota Mamoru Ishii |
| author_facet | Tadahiko Ogawa Yuichi Otsuka Kazuo Shiokawa Takuya Tsugawa Akinori Saito Kazuaki Hoshinoo Keisuke Matunaga Minoru Kubota Mamoru Ishii |
| author_sort | Tadahiko Ogawa |
| collection | DOAJ |
| description | We report on night time air glow imaging observations of the low latitude ionosphere by means of a 630-m all-sky imager in stalled in March 2006 at Yonaguni, Japan (24.5°N, 123.0°E; 14.6°N geomagnetic), about 100 km east of Taiwan. The imager detected medium-scale traveling ionospheric disturbances (MSTIDs) for about 7 hours on the night of 26 May 2006. A dense GPS net work in Japan also ob served the same MSTID event on this night. The imager and GEONET data indicate that most of the MSTIDs prop a gated south west ward from the north of Japan to the south of Yonaguni and Taiwan over 4000 km, with a southern limit of 19°N (geomagnetic latitude 9°N) or lower. On the night of 10 November 2006, the imager observed two weak emission bands that were embedded on the F-region anomaly crest to the south of Yonaguni. The simultaneous electron density profiles from the FORMOSAT-3/COS MIC mission demonstrate that the weak emission bands are due to density depletions in equatorial plasma bubbles. These case studies suggest that the Yonaguni imager in collaboration with other instruments is very suit able for the study of ionospheric disturbances in and around the northern F-region anomaly crest. |
| first_indexed | 2024-04-13T22:31:18Z |
| format | Article |
| id | doaj.art-31b08956497f4a45bde9104c49102f18 |
| institution | Directory Open Access Journal |
| issn | 1017-0839 2311-7680 |
| language | English |
| last_indexed | 2024-04-13T22:31:18Z |
| publishDate | 2009-01-01 |
| publisher | Springer |
| record_format | Article |
| series | Terrestrial, Atmospheric and Oceanic Sciences |
| spelling | doaj.art-31b08956497f4a45bde9104c49102f182022-12-22T02:26:55ZengSpringerTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802009-01-0120128710.3319/TAO.2007.12.06.02(F3C)832Medium-Scale Traveling Ionospheric Disturbances and Plasma Bubbles Observed by an All-Sky Airglow Imager at Yonaguni, JapanTadahiko OgawaYuichi OtsukaKazuo ShiokawaTakuya TsugawaAkinori SaitoKazuaki HoshinooKeisuke MatunagaMinoru KubotaMamoru IshiiWe report on night time air glow imaging observations of the low latitude ionosphere by means of a 630-m all-sky imager in stalled in March 2006 at Yonaguni, Japan (24.5°N, 123.0°E; 14.6°N geomagnetic), about 100 km east of Taiwan. The imager detected medium-scale traveling ionospheric disturbances (MSTIDs) for about 7 hours on the night of 26 May 2006. A dense GPS net work in Japan also ob served the same MSTID event on this night. The imager and GEONET data indicate that most of the MSTIDs prop a gated south west ward from the north of Japan to the south of Yonaguni and Taiwan over 4000 km, with a southern limit of 19°N (geomagnetic latitude 9°N) or lower. On the night of 10 November 2006, the imager observed two weak emission bands that were embedded on the F-region anomaly crest to the south of Yonaguni. The simultaneous electron density profiles from the FORMOSAT-3/COS MIC mission demonstrate that the weak emission bands are due to density depletions in equatorial plasma bubbles. These case studies suggest that the Yonaguni imager in collaboration with other instruments is very suit able for the study of ionospheric disturbances in and around the northern F-region anomaly crest. http://tao.cgu.org.tw/images/attachments/v201p287.pdf Traveling ionospheric disturbancePlasma bubbleAirglowTotal electron content |
| spellingShingle | Tadahiko Ogawa Yuichi Otsuka Kazuo Shiokawa Takuya Tsugawa Akinori Saito Kazuaki Hoshinoo Keisuke Matunaga Minoru Kubota Mamoru Ishii Medium-Scale Traveling Ionospheric Disturbances and Plasma Bubbles Observed by an All-Sky Airglow Imager at Yonaguni, Japan Terrestrial, Atmospheric and Oceanic Sciences Traveling ionospheric disturbance Plasma bubble Airglow Total electron content |
| title | Medium-Scale Traveling Ionospheric Disturbances and Plasma Bubbles Observed by an All-Sky Airglow Imager at Yonaguni, Japan |
| title_full | Medium-Scale Traveling Ionospheric Disturbances and Plasma Bubbles Observed by an All-Sky Airglow Imager at Yonaguni, Japan |
| title_fullStr | Medium-Scale Traveling Ionospheric Disturbances and Plasma Bubbles Observed by an All-Sky Airglow Imager at Yonaguni, Japan |
| title_full_unstemmed | Medium-Scale Traveling Ionospheric Disturbances and Plasma Bubbles Observed by an All-Sky Airglow Imager at Yonaguni, Japan |
| title_short | Medium-Scale Traveling Ionospheric Disturbances and Plasma Bubbles Observed by an All-Sky Airglow Imager at Yonaguni, Japan |
| title_sort | medium scale traveling ionospheric disturbances and plasma bubbles observed by an all sky airglow imager at yonaguni japan |
| topic | Traveling ionospheric disturbance Plasma bubble Airglow Total electron content |
| url |
http://tao.cgu.org.tw/images/attachments/v201p287.pdf
|
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