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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Vertical midscale ionospheric disturbances caused by surface seismic waves based on Irkutsk chirp ionosonde data in 2011-2016
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Vertical midscale ionospheric disturbances caused by surface seismic waves based on Irkutsk chirp ionosonde data in 2011-2016

机译：垂直中级电离层扰动引起的通过表面基于伊尔库茨克唧唧喳喳的地震波ionosonde在2011 - 2016年的数据

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摘要

Based on the Irkutsk fast monostatic chirp ionosonde data, we made a statistical analysis of ionospheric effects for 28 earthquakes which appeared in 2011-2016 years. These effects are related with surface (Rayleigh) seismic waves far from epicenter. The analysis has shown that nine of these earthquakes were accompanied by vertical midscale ionospheric irregularities (multicusp). To estimate the ionospheric efficiency of the seismic waves, we proposed new index K_W. The index estimates the maximal amplitude of the acoustic shock wave generated by given spatial distribution of seismic vibrations and related with maximal spectral power of seismic oscillations. Based on the analysis of experimental data, we have shown that earthquake-related multicusp (5-25 s irregularities) is observed mostly at daytime [07:00-17:00] LST for K_W ≥ 4.7. The observations of acoustic waves by GPS technique in the epicenter vicinity (120-600 s irregularities) do not show such a daytime dependence. Based on 24 May 2013 Okhotsk Sea earthquake example, we demonstrated that deep-focus earthquakes can produce strong multicusp far from the epicenter, although do not produce significant GPS ionospheric response in the epicenter vicinity.
机译：基于伊尔库茨克快速单站唧唧喳喳ionosonde数据,我们做了统计分析地震电离层效应为28出现在2011 - 2016年。与表面(瑞利)地震波从震中。这些地震都伴随着垂直中级电离层不规则(multicusp)。估算的电离层效率K_W地震波,我们提出新的索引。指数估计的最大振幅声激波产生的空间分布的地震振动及相关与光谱最大地震的力量振荡。实验数据,我们已经表明与地震有关的multicusp(做些年代违规行为)是观察到的主要是在白天(07:00-17:00) LST K_W≥4.7。声波的GPS技术震中附近(120 - 600年代违规行为)没有显示这样一个白天的依赖。2013年5月鄂霍次克海海域地震的例子中,我们呢证明了深源地震产生强烈的multicusp远离震中,虽然不产生显著的GPS电离层响应在震中附近。

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