Probing the Ionospheric Effects of the 2020 Aegean Sea Earthquake: Leveraging GNSS Observations for Tsunami Early Warning in the Mediterranean

IF 2.6 2区 地球科学 Q2 ASTRONOMY & ASTROPHYSICS
F. Fuso, M. Ravanelli
{"title":"Probing the Ionospheric Effects of the 2020 Aegean Sea Earthquake: Leveraging GNSS Observations for Tsunami Early Warning in the Mediterranean","authors":"F. Fuso,&nbsp;M. Ravanelli","doi":"10.1029/2024JA032946","DOIUrl":null,"url":null,"abstract":"<p>On 30 October 2020, a Mw 7.0 earthquake occurred in the eastern Aegean Sea area north of Samos island (Greece), causing tsunami waves up to 3 m. In this work, we analyze Global Navigation Satellite System (GNSS) observations to investigate the induced ionospheric perturbation in total electron content (TEC) estimates. We observe TEC variations (up to 0.3 TECU), linked to the propagation of the internal gravity waves (IGWs) caused by the small tsunami. Comparison between IGWs arrival times in the ionosphere and the tsunami wave arrival at tide gauges reveals that the optimal observation geometries of ionospheric TEC detected the tsunami's arrival before it reached Kos and Hraklreio coastlines. We show that TEC variations, though slight, can be used to complement existing tsunami early warning systems, particularly in the Mediterranean region where such phenomena are not deeply investigated. Integrating TEC data alongside traditional seismic sensors and sea level measurements can assure a more robust early warning system capable of detecting and mitigating the effects of also small but impactful tsunamis.</p>","PeriodicalId":15894,"journal":{"name":"Journal of Geophysical Research: Space Physics","volume":"129 12","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JA032946","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Geophysical Research: Space Physics","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1029/2024JA032946","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0

Abstract

On 30 October 2020, a Mw 7.0 earthquake occurred in the eastern Aegean Sea area north of Samos island (Greece), causing tsunami waves up to 3 m. In this work, we analyze Global Navigation Satellite System (GNSS) observations to investigate the induced ionospheric perturbation in total electron content (TEC) estimates. We observe TEC variations (up to 0.3 TECU), linked to the propagation of the internal gravity waves (IGWs) caused by the small tsunami. Comparison between IGWs arrival times in the ionosphere and the tsunami wave arrival at tide gauges reveals that the optimal observation geometries of ionospheric TEC detected the tsunami's arrival before it reached Kos and Hraklreio coastlines. We show that TEC variations, though slight, can be used to complement existing tsunami early warning systems, particularly in the Mediterranean region where such phenomena are not deeply investigated. Integrating TEC data alongside traditional seismic sensors and sea level measurements can assure a more robust early warning system capable of detecting and mitigating the effects of also small but impactful tsunamis.

Abstract Image

探测2020年爱琴海地震的电离层效应:利用GNSS观测进行地中海海啸预警
2020年10月30日,希腊萨摩斯岛以北的爱琴海东部地区发生7.0级地震,引发高达3米的海啸。在这项工作中,我们分析了全球导航卫星系统(GNSS)的观测结果,以研究电离层扰动对总电子含量(TEC)估计的影响。我们观察到TEC变化(高达0.3 TECU),与小海啸引起的内部重力波(igw)的传播有关。igw到达电离层的时间与海啸到达潮汐计的时间的比较表明,电离层TEC的最佳观测几何形状在海啸到达科斯和赫拉克雷奥海岸线之前就探测到了海啸的到来。我们表明,TEC变化虽然很小,但可以用来补充现有的海啸预警系统,特别是在地中海地区,这种现象没有深入研究。将TEC数据与传统的地震传感器和海平面测量相结合,可以确保建立一个更强大的预警系统,能够发现和减轻同样小但有影响力的海啸的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of Geophysical Research: Space Physics
Journal of Geophysical Research: Space Physics Earth and Planetary Sciences-Geophysics
CiteScore
5.30
自引率
35.70%
发文量
570
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信