Ionospheric anomalies have been shown to occur a few days before several large earthquakes. The published works normally address examples limited in time (a single event or few of them) or space (a particular geographic area), so that a clear method based on these anomalies which consistently yields the place and magnitude of the forthcoming earthquake, anytime and anywhere on earth, has not been presented so far. The current research is aimed at prediction of large earthquakes, that is with magnitude M_w 7 or higher. It uses as data bank all significant earthquakes occurred worldwide in the period from January 1, 2011 to December 31, 2018. The first purpose of the research is to improve the use of ionospheric anomalies in the form of TEC grids for earthquake prediction. A space–time TEC variation estimator especially designed for earthquake prediction will show the advantages with respect to the use of simple TEC values. Further, taking advantage of the well-known predictive abilities of the Gutenberg–Richter law’s b-value, a combined estimator based on both TEC anomalies and b-values will be designed and shown to improve prediction performance even more.

中文翻译：

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利用TEC和b值的组合估计量进行大地震预测

已经证明电离层异常发生在几次大地震之前的几天。出版的作品通常处理时间有限（单个事件或少数事件）或空间（特定地理区域）受限的示例，因此基于这些异常的清晰方法可以随时随地产生即将发生的地震的地点和震级。到目前为止，还没有出现在地球上的任何地方。当前的研究旨在预测M _w级的大地震7或更高。它使用数据库将2011年1月1日至2018年12月31日期间全球发生的所有重大地震作为数据库。研究的首要目的是改进以TEC网格形式使用电离层异常来进行地震预测。专为地震预报而设计的时空TEC变化估计器将显示出使用简单TEC值的优势。此外，将利用古腾堡-里希特定律的b值的众所周知的预测能力，设计并显示基于TEC异常和b值的组合估计量，以进一步提高预测性能。