Ionospheric F2 region perturbed by the 25 April 2015 Nepal earthquake

NCUIR > College of Earth Sciences > DEPARTMENT OF SPACE SCIENCE AND ENGINEERING > journal & Dissertation > Item 987654321/102226

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/102226

Title:	Ionospheric F2 region perturbed by the 25 April 2015 Nepal earthquake
Authors:	張起維;Sun, Yang‐Yi;Liu, Jann‐Yenq;Lin, Chi‐Yen;Tsai, Ho‐Fang;Chang, Loren C.;Chen, Chao‐Yen;Chen, Chia‐Hung
Contributors:	地球科學學院太空科學與工程學系
Date:	2016-06-01
Issue Date:	2026-04-23 11:04:29 (UTC+8)
Publisher:	Wiley-Blackwell
Abstract:	摘要： Seismic waves can be detected in the Earth's atmosphere and ionosphere; however, their impacts on ionospheric electron density ( Ne ) structures near the altitude of peak Ne ( h m F 2 ) have not yet been fully determined due to the lack of sufficient observations sampled in the vertical direction. Here we apply a ground‐based Global Positioning System (GPS) receiving network in Asia as well as the space‐based GPS occultation experiment on board the FORMOSAT‐3/COSMIC (F3/C) satellite to vertically scan the ionospheric Ne structures, which were perturbed by the magnitude M w 7.8 Nepal earthquake that occurred on 25 April 2015. The F3/C altitudinal Ne profiles show that the Nepal earthquake‐induced air perturbations penetrate into the ionosphere at supersonic speeds of approximately 800 m/s and change the Ne structure by 10% near h m F 2 . The vertical scale of the Ne perturbation is 150 km, while the h m F 2 is uplifted by more than 30 km within 1 min. Those results reveal that the earthquake‐induced ground displacement should be considered as a significant force that perturbs the vertical Ne structure of the ionosphere. Coseismic ionospheric disturbance observed by FORMOSAT‐3/COSMIC Near‐supersonic uplifting of the ionospheric F 2 peak caused by the Nepal earthquake Vertical scale of the coseismic disturbance is near 150 km in the F 2 region 出版日期： 2016-06 出處： Journal of geophysical research : Space physics (2013 - Present), 2016-06, Vol.121 (6), p.5778-5784 資源來源： Wiley Online Library - AutoHoldings Journals 識別號： ISSN: 2169-9380 識別號： EISSN: 2169-9402 識別號： DOI: 10.1002/2015JA022280
Appears in Collections:	[DEPARTMENT OF SPACE SCIENCE AND ENGINEERING] journal & Dissertation

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