DOI: 10.1002/2015GL067487
论文题名: The vertical propagation of disturbances triggered by seismic waves of the 11 March 2011 M9.0 Tohoku earthquake over Taiwan
作者: Liu J.Y. ; Chen C.H. ; Sun Y.Y. ; Chen C.H. ; Tsai H.F. ; Yen H.Y. ; Chum J. ; Lastovicka J. ; Yang Q.S. ; Chen W.S. ; Wen S.
刊名: Geophysical Research Letters
ISSN: 0094-9333
EISSN: 1944-9064
出版年: 2016
卷: 43, 期: 4 起始页码: 1759
结束页码: 1765
语种: 英语
英文关键词: infrasonic sound
; seismo-ionospheric disturbance
; Tohoku earthquake
; vertical propagation
Scopus关键词: Earth atmosphere
; Geophysics
; Global positioning system
; Ionosphere
; Ionospheric measurement
; Seismic waves
; Seismology
; Time delay
; Atmospheric disturbance
; Epicentral distances
; High frequency HF
; Ionospheric disturbance
; Theoretical calculations
; Tohoku earthquakes
; Vertical ground motion
; Vertical motions
; Earthquakes
; arrival time
; earthquake magnitude
; GPS
; infrasonics
; ionosphere
; magnetometer
; Rayleigh wave
; seismic wave
; seismograph
; sound velocity
; Tohoku earthquake 2011
; travel time
; wave propagation
; Honshu
; Japan
; Taiwan
; Tohoku
英文摘要: In this paper, concurrent/colocated measurements of seismometers, infrasonic systems, magnetometers, HF-CW (high frequency-continuous wave) Doppler sounding systems, and GPS receivers are employed to detect disturbances triggered by seismic waves of the 11 March 2011 M9.0 Tohoku earthquake. No time delay between colocated infrasonic (i.e., super long acoustic) waves and seismic waves indicates that the triggered acoustic and/or gravity waves in the atmosphere (or seismo-traveling atmospheric disturbances, STADs) near the Earth's surface can be immediately activated by vertical ground motions. The circle method is used to find the origin and compute the observed horizontal traveling speed of the triggered infrasonic waves. The speed of about 3.3 km/s computed from the arrival time versus the epicentral distance suggests that the infrasonic waves (i.e., STADs) are mainly induced by the Rayleigh waves. The agreements in the travel time at various heights between the observation and theoretical calculation suggest that the STADs triggered by the vertical motion of ground surface caused by the Tohoku earthquake traveled vertically from the ground to the ionosphere with speed of the sound in the atmosphere over Taiwan. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977856310&doi=10.1002%2f2015GL067487&partnerID=40&md5=fa6740a9fc792ce6d556fee5d48a024e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10296
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
Recommended Citation:
Liu J.Y.,Chen C.H.,Sun Y.Y.,et al. The vertical propagation of disturbances triggered by seismic waves of the 11 March 2011 M9.0 Tohoku earthquake over Taiwan[J]. Geophysical Research Letters,2016-01-01,43(4).