碩士 / 國立成功大學 / 地球科學系碩博士班 / 101 / In this study, the seismo-traveling ionospheric disturbances (STIDs) in total electron content (TEC) generated by the 2011 Mw9.0 Great Tohoku earthquake at 05:46:23 UT on March 11, 2011, are investigated by using ground-based Global Positioning System (GPS) receiver networks. Not only triggered by seismic surface waves the STIDs formed by tsunami waves are clearly seen during the Tohoku earthquake event. A method of wavelet analysis is applied to investigate the spectral characters of STIDs induced by the seismic surface waves and the tsunami waves. Results show that the spectrum of STID resulting by surface waves reveals a single short period enhancement, while those by tsunami waves show multiple long-period responses. Additional events, including 2004 Sumatra(Mw 9.1), 2010 Chile(Mw 8.8) and 2013 Solomon(Mw 8.0) earthquakes, are investigated for the general spectral characteristics of seismic surface and tsunami waves. This results also shows that the arrival time of STID induced by surface waves is earlier than that by tsunami waves, which could be applied as the short-term tsunami warnings.
| Identifer | oai:union.ndltd.org:TW/101NCKU5135009 |
| Date | January 2013 |
| Creators | Wei-HanChen, 陳威翰 |
| Contributors | Chien-Hung Lin, 林建宏 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 72 |
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