Imaging observations of the equatorward limit of midlatitude traveling ionospheric disturbances

• Shiokawa K.

  Solar-Terrestrial Environment Laboratory, Nagoya University

• Otsuka Y.

  Solar-Terrestrial Environment Laboratory, Nagoya University

• Ejiri M. K.

  Solar-Terrestrial Environment Laboratory, Nagoya University

• Sahai Y.

  Solar-Terrestrial Environment Laboratory, Nagoya University

• Kadota T.

  Solar-Terrestrial Environment Laboratory, Nagoya University

• Ihara C.

  Solar-Terrestrial Environment Laboratory, Nagoya University

• Ogawa T.

  Solar-Terrestrial Environment Laboratory, Nagoya University

• Igarashi K.

  Communications Research Laboratory

• Miyazaki S.

  Geographical Survey Institute

• Saito A.

  Graduate School of Science, Kyoto University

抄録

This paper reports the first attempt to observe the equatorward limit of medium-scale traveling ionospheric disturbances (TIDs) in the middle latitudes. The TIDs usually propagate southwestward in the northern hemisphere. An all-sky cooled-CCD imager measured 630-nm airglow at a southern island of Japan, Okinawa (26.9°N, 128.3°E, geomagnetic latitude (MLAT) = 17.0°), during the FRONT-2 campaign of August 4-15, 1999. The TIDs were detected at the mainland of Japan (-21°-36° MLAT) by the total electron content (TEC) observations of more than 1000 GPS receivers. In the August 4 event, the TIDs moving southwestward was seen only in the northern sky of Okinawa as a depletion band in the 630-nm airglow images. In the August 6 event, the TIDs were not seen in the 630-nm images at Okinawa, although weak TID activity was observed by the GPS network at the mainland of Japan. The TEC data also showed weakening of the TID activity below 18° MLAT. Based on these observations, we suggest that there is a possible limit of medium-scale TID propagation around -18° MLAT.

収録刊行物

• Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ

  Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ 54 (1), 57-62, 2002

  地球電磁気・地球惑星圏学会 、公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会

キーワード

• Space and Planetary Science
• Geology

詳細情報

• CRID: 1390282681488667648
• NII論文ID: 10008634172
• NII論文ID: 130003780825
• NII書誌ID: AA11211921
• DOI: 10.1186/bf03352421
• ISSN: 18805981
• ISSN: 13438832
• NDL書誌ID: 6062415
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6062415
• Web Site: https://link.springer.com/content/pdf/10.1186/BF03352421.pdf
• Web Site: https://link.springer.com/article/10.1186/BF03352421/fulltext.html
• Web Site: http://link.springer.com/content/pdf/10.1186/BF03352421
• 本文言語コード: en
• データソース種別:
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  • NDL
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