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Directivity and apparent velocity of the coseismic ionospheric disturbances observed with a dense GPS array

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EPSL2005-236-3-4.pdf1.29 MBPDF見る/開く
この文献へのリンクには次のURLを使用してください:http://hdl.handle.net/2115/14616

タイトル: Directivity and apparent velocity of the coseismic ionospheric disturbances observed with a dense GPS array
著者: Heki, Kosuke 著作を一覧する
Ping, Jinsong 著作を一覧する
キーワード: ionospheric disturbance
earthquake
TEC
GPS
Japan
発行日: 2005年 8月15日
出版者: Elsevier B.V.
誌名: Earth and Planetary Science Letters
巻: 236
号: 3-4
開始ページ: 845
終了ページ: 855
出版社 DOI: 10.1016/j.epsl.2005.06.010
抄録: Coseismic disturbances in ionosphere have been observed after recent thrust earthquakes off the Pacific coast of Japan, with a dense Global Positioning System array. Positive pulses in electron content, as large as several times 1015 electrons/m2 and as long as 4–5 min, emerge 10 min after earthquakes and propagate horizontally with apparent velocity of 1 km/s, close to the sound velocity at the ionospheric height. They may have been excited by coseismic uplifts of the sea surface initially as upward propagating compressive pulses of atmosphere, which were gradually refracted to propagate horizontally in ionosphere. The propagation has strong north–south asymmetry, and interaction between the movements of charged particles in acoustic waves and geomagnetic fields might have selectively attenuated the northward propagating disturbances.
Relation (URI): http://www.sciencedirect.com/science/journal/0012821X
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/14616
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 日置 幸介

 

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