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[SCI]Detection of ionospheric disturbances driven by the 2011 Tohoku tsunami using GPS network in Japan

时间:2017-05-03 来源:未知 点击:
作者:Tang, L (Tang Long)[ 1 ] ; Guo, BF (Guo Bo-Feng)[ 2 ] ; Li, Z (Li Zhe)[ 3 ]
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
: 60  : 2 : 507-513
DOI: 10.6038/cjg20170206
出版年: FEB 2017
查看期刊信息
摘要
Tsunami waves can produce atmospheric gravity waves and thus perturb the ionosphere. In this study, we use the GPS total electron content data in Japan to detect the ionospheric disturbances triggered by the Tohoku tsunami that occurred on 11 March 2011. The results show that there are two types of gravity waves in the ionosphere over Japan, which is produced by the tsunami waves and the seismic rupture process, respectively. The earthquake-driven ionospheric gravity waves are distributed around the epicenter (including the areas over and far from the ocean) whereas the tsunami-driven ionospheric gravity waves are observed above the ocean. The earthquake-driven ionospheric gravity waves have different horizontal velocities, including about 210 m . s(-1) and 170 m . s(-1), and frequency of about 1. 5 mHz. The tsunami-driven ionospheric gravity waves have velocity of about 280 m . s(-1), which are faster than that of the earthquake-driven ionospheric gravity waves, and frequency of about 1. 0 mHz. In addition, the tsunami-driven ionospheric gravity waves have similar propagation characteristics to the causative tsunami waves in terms of horizontal velocity, direction, travel time, waveform and frequency. This study distinguishes the tsunami signals in ionosphere from ionospheric disturbances triggered by the earthquake event and confirms again that the ionosphere is sensitive to tsunami waves.
关键词
作者关键词:GPSTotal electron contentIonospheric disturbancesAtmospheric gravity waves;Tsunami
KeyWords Plus:GRAVITY-WAVES
作者信息
通讯作者地址Tang, L (通讯作者)

http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif Guangdong Univ Technol, Sch Civil & Transportat, Guangzhou 510006, Guangdong, Peoples R China.
地址:
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif [ 1 ] Guangdong Univ Technol, Sch Civil & Transportat, Guangzhou 510006, Guangdong, Peoples R China
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif [ 2 ] China Earthquake Adm, Crust Monitoring & Applicat Ctr 1, Tianjin 300180, Peoples R China
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif [ 3 ] Wuhan Univ, Sch Geodesy & Geomat, Wuhan 430079, Peoples R China
电子邮件地址:ltang@whu.edu.cn
出版商
SCIENCE PRESS, 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
类别 / 分类
研究方向:Geochemistry & Geophysics
Web of Science 类别:Geochemistry & Geophysics
文献信息
文献类型:Article
语种:Chinese
入藏号: WOS:000394412200006
ISSN: 0001-5733
期刊信息
·         Impact Factor (影响因子): 0.984