Preseismic Ionospheric Anomalies Detected Before the 2016 Taiwan Earthquake
Preseismic Ionospheric Anomalies Detected Before the 2016 Taiwan Earthquake
复制标题
DOI：
10.1029/2019ja026640
复制
发表时间：
2017-03
期刊：
影响因子：
--
通讯作者：
Shinhachiro Goto;Ryoma Uchida;K. Igarashi;Chia‐Hung Chen;Minghui Kao;K. Umeno
中科院分区：
文献类型：
--
作者：
Shinhachiro Goto;Ryoma Uchida;K. Igarashi;Chia‐Hung Chen;Minghui Kao;K. Umeno
2016年2月5日（UTC），台湾南部发生矩级6.4级地震，被称为2016（南）台湾地震和2016梅农地震。本文对该地震事件的地震前兆证据进行了研究。结果表明，在地震发生前可以观测到电离层总电子含量（TEC）的异常。这些异常是通过处理TEC数据获得的，其中TEC数据是根据全球导航卫星系统在台湾密集分布的地面站观测到的信号的相位延迟计算得出的。这表明这些异常是在事件发生前1小时内检测到的。
On 5 February 2016 (UTC), an earthquake with moment magnitude 6.4 occurred in southern Taiwan, known as the 2016 (Southern) Taiwan earthquake and 2016 Meinong earthquake. In this study, evidences of seismic earthquake precursors for this earthquake event are investigated. Results show that ionospheric anomalies in total electron content (TEC) can be observed before the earthquake. These anomalies were obtained by processing TEC data, where such TEC data are calculated from phase delays of signals observed at densely arranged ground‐based stations in Taiwan for Global Navigation Satellite Systems. This shows that such anomalies were detected within 1 hr before the event.