An observing system simulation experiment for FORMOSAT-5/AIP detecting seismo-ionospheric precursors

研究成果: 雜誌貢獻期刊論文同行評審

9 引文 斯高帕斯(Scopus)

摘要

AIP (advanced ionospheric probe) on board FORMOSAT-5 is a next version and advanced generation science payload of IPEI (ionospheric Plasma and Electrodynamics Instrument) on board ROCSAT-1 (i.e., FORMOSAT-1). We examine the ion density, ion temperature, and ion velocity probed by ROCSAT-1/IPEI, as well as the global ionospheric map (GIM) of the total electron content (TEC) derived by ground-based GPS receivers during the 31 March 2002 M6.8 Earthquake in Taiwan to determine whether FORMOSAT-5/AIP can be used to detect seismo-ionospheric precursors (SIPs). It is found that in the epicenter area, the GIM TEC significantly decreases 1 - 5 days before the earthquake, while the ROCSAT-1/IPEI ion density significantly decreases and ion velocity in the downward direction anomalously increases. The anomalous decreases in the ROCSAT/IEPI ion density and the GIM TEC concurrently appear around the epicenter area 1 - 5 days before the earthquake, which suggests that FORMOSAT-5/AIP can be employed to detect SIPs. Moreover, the increase in the downward velocity implies that a westward electric field generated during the preparation earthquake period is essential.

原文???core.languages.en_GB???
頁(從 - 到)117-127
頁數11
期刊Terrestrial, Atmospheric and Oceanic Sciences
28
發行號2
DOIs
出版狀態已出版 - 4月 2017

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