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首页> 外文期刊>Earth, planets and space: EPS >Seismo-traveling ionospheric disturbances of ionograms observed during the 2011 Mw 9.0 Tohoku Earthquake
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Seismo-traveling ionospheric disturbances of ionograms observed during the 2011 Mw 9.0 Tohoku Earthquake

机译:在2011 Mw 9.0东北地震中观测到的电离图的地震运动电离层扰动

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In this paper, sequences of ionograms recorded by 4 ionosondes in Japan and 1 in Taiwan are employed to examine seismo traveling ionospheric disturbances (STIDs) triggered by the 11 March, 2011, M 9.0 Tohoku Earthquake. The circle method, a standard/traditional technique of seismologists for locating an earthquake, is used to find the origin and compute the propagation speed of the triggered STID. Results show that the STID speeds induced by Rayleigh waves, acoustic gravity waves mainly traveling in the ionosphere, and tsunami waves of the Tohoku Earthquake are 2100-3200 m/s (2.1-3.2 km/s), 900 m/s, and 200 m/s (720 km/hr), respectively. The origins derived by the circle method near the epicenter confirm that the observed STIDs were triggered by the seismic waves and tsunami waves of the Tohoku Earthquake.
机译:本文采用日本4个离子探空仪和台湾1个离子探空仪记录的电离图序列,研究2011年3月11日东北9.0级地震引发的地震行电离层扰动(STID)。圆形法是地震学家用来确定地震位置的标准/传统技术,可用于找到原点并计算触发的STID的传播速度。结果表明,东北地震的瑞利波,主要在电离层传播的声重力波和海啸引起的STID速度分别为2100-3200 m / s(2.1-3.2 km / s),900 m / s和200分别为m / s(720公里/小时)。通过震源附近的圆形方法得出的原点证实,观测到的STID是由东北地震的地震波和海啸波触发的。

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