Are the Significant Ionospheric Anomalies Associated with the 2007 Great Deep-Focus Undersea Jakarta-Java Earthquake?
Are the Significant Ionospheric Anomalies Associated with the 2007 Great Deep-Focus Undersea Jakarta-Java Earthquake?
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DOI：
10.3390/rs14092211
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发表时间：
2022-05
期刊：
影响因子：
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通讯作者：
D. Tao;Guangxue Wang;Jiayi Zong;Yuanzheng Wen;Jinbin Cao;R. Battiston;Z. Zeren
中科院分区：
文献类型：
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作者：
D. Tao;Guangxue Wang;Jiayi Zong;Yuanzheng Wen;Jinbin Cao;R. Battiston;Z. Zeren
本文试图对深源海底大地震与电离层异常之间的关系进行分析。2007年雅加达-爪哇Mw 7. 5地震震中区的TEC（总电子含量）时空异常与LEO（低地球轨道）卫星观测到的电离层等离子体异常具有较好的一致性。在地震期间的本地化和同步的扰动表明，这些电离层异常是高度相关的这一大的海底地震。为了确定这种相关性，我们努力将地震相关信号与太阳和地磁活动引起的大电磁噪声、自然非地震源和已知的人工信号区分开来。然而，应认识到这项工作的困难，并谨慎对待。这一特殊的（深源和海底）事例研究为我们研究岩石圈-大气-电离层（LAI）耦合过程提供了有价值的信息，并提醒我们今后需要更加谨慎地对待深源海底地震事件。
This work is an attempt to critically analyze the correlation between great deep-focus undersea earthquake and possible ionospheric anomalies. The significant TEC (total electron content) temporal and spatial anomalies were detected over the epicenter of 2007 Mw7.5 Jakarta–Java earthquake, and they coincide well with the striking plasma anomalies in the ionosphere in situ observed by the LEO (low Earth orbit) satellite. The localization and synchronization of the disturbances during the earthquake suggest that these ionospheric anomalies are highly related to this large undersea earthquake. In order to identify this correlation, we made efforts to distinguish seismo-associated signals from large electromagnetic noise due to solar and geomagnetic activities, natural non-seismic sources and known artificial signals. Nevertheless, the difficulties of this work should be recognized and approached with caution. This special (deep-focus and undersea) case study here provides us with valuable information on the study of lithosphere–atmosphere–ionosphere (LAI) coupling process and reminds us that deep-focus undersea seismic events need to be treated more carefully and discreetly in the future.