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标题：Seismo-Traveling Ionospheric Disturbances Triggered by the 12 May 2008 M 8.0 Wenchuan Earthquake
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作者：Jann-Yenq Liu ; Yang-Yi Sun ; Ho-Fang Tsai 等
期刊名称：Terrestrial Atmospheric and Oceanic Sciences
印刷版ISSN：1017-0839
出版年度：2012
卷号：23
期号：1
页码：9-14
DOI：10.3319/TAO.2011.08.03.01(T)
出版社：Chinese Geoscience Union
摘要：A network of 6 ground-based GPS receivers in East Asia was employed to study seismo-traveling ionospheric disturbances (STIDs) triggered by an M 8.0 earthquake which occurred at Wenchuan on 12 May 2008. The network detected 5 STIDs on the south side of the epicenter area. A study on the distances of the detected STIDs to the epicenter versus their associated traveling times shows that the horizontal speed is about 600 m s -1 . Applying the circle method, we find that the 5 circles intercept at a point right above the epicenter when the horizontal speed of 600 m s -1 is given. Global searches of the ray-tracing and the beam-forming techniques confirm that the STIDs are induced by vertical motions in the Earth's surface during the Wenchuan Earthquake.
关键词：STID; GPS; TEC; Wenchuan Earthquake;