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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/27416


    Title: Possible Spatial Extent of Ionospheric GPS-TEC and NmF2 Anomalies Related to the 1999 Chi-Chi and Chia-Yi Earthquakes in Taiwan
    Authors: Nishihashi,M;Hattori,K;Jhuang,HK;Liu,JY
    Contributors: 太空科學研究所
    Keywords: TOTAL ELECTRON-CONTENT;FOF2
    Date: 2009
    Issue Date: 2010-06-29 18:38:01 (UTC+8)
    Publisher: 中央大學
    Abstract: Scientists analyzed temporal variations of local data recorded in Taiwan and reported anomalous reductions in the ionospheric total electron content (TEC) on days 4 and 3 before (17 and 18 September) the Chi-Chi earthquake (M-w 7.6, M-L 7.3), and days 3 and 1 prior to (19 and 21 October) the Chia-Yi earthquake (M-L 6.4) in Taiwan. In this paper, we propose a spatial analysis which compares the data recorded inside and outside of the earthquake area around Taiwan to discriminate whether the anomalies are local (earthquake related) or global (non-earthquake related) phenomena. Results suggest that the anomalies appearing day 3 before the Chi-Chi earthquake, and days 3 and I before the Chia-Yi earthquake are local (earthquake related) phenomena and the anomaly appearing on 17 September 1999 (day 4 before) might be the result of both global phenomena (i.e., a geomagnetic storm) and the local effect of the Chi-Chi earthquake.
    Relation: TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
    Appears in Collections:[太空科學研究所 ] 期刊論文

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