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  Application of Probability and Statistics on GNSS Data to Analyze TEC Anomalies Generated by Earthquakes

Nhung, L., Männel, B., Nguyen Thai, C., Schuh, H. (2024): Application of Probability and Statistics on GNSS Data to Analyze TEC Anomalies Generated by Earthquakes. - In: Khomsi, S., Bezzeghoud, M., Banerjee, S., Eshagh, M., Benim, A. C., Merkel, B., Kallel, A., Panda, S., Chenchouni, H., Grab, S., Barbieri, M. (Eds.), Selected Studies in Geophysics, Tectonics and Petroleum Geosciences: Proceedings of the 3rd Conference of the Arabian Journal of Geosciences (CAJG-3), (Advances in Science, Technology and Innovation), Cham : Springer Nature Switzerland, 7-12.
https://doi.org/10.1007/978-3-031-43807-3_2

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5026325 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5026325_1
Genre: Book Chapter

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 Creators:
Nhung, Le1, Author              
Männel, B.1, Author              
Nguyen Thai, Chinh1, Author              
Schuh, H.1, Author              
Affiliations:
11.1 Space Geodetic Techniques, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146025              

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 Abstract: Ionospheric disturbances are associated with the propagation of seismic waves generated by earthquakes. We analyze total electron content (TEC) fluctuations from Global Navigation Satellite Systems (GNSS) data. This study investigates the global earthquakes from December 2004 to March 2020 with magnitude (Mw) 4.0 to 9.1. Data of 65 permanent GNSS stations are used to analyze the impacts of these earthquakes on the ionosphere. The experimental data based on the cluster sampling method ensure strict conditions such as accuracy, the distance from the monitoring stations to the epicenter, and the depth of the hypocenter. At least three GNSS stations near the epicenter participate in the analysis of each earthquake. Probability and statistics are applied to remove outliers and rough errors in the input data, to select datasets with similar quality, and to analyze TEC anomalies. The results show that when a strong earthquake occurs, the TEC values calculated at different GNSS stations surrounding the earthquake region tend to exhibit similar variations. Depending on the magnitude, epicenter, and hypocenter depth, these fluctuations can range from ± 3.2 TECU to ± 14.5 TECU for large earthquakes. These TEC fluctuations occur from 30 min to almost two hours before the mainshock of the earthquakes and last to the aftershock period. For earthquakes with a magnitude greater than 6.0 Mw, the TEC fluctuations are significant. The findings of this study contribute to GNSS applications in studying earthquakes in the future.

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Language(s): eng - English
 Dates: 2024-02-272024
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1007/978-3-031-43807-3_2
GFZPOF: p4 T1 Atmosphere
GFZPOFWEITERE: p4 MESI
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Title: Selected Studies in Geophysics, Tectonics and Petroleum Geosciences : Proceedings of the 3rd Conference of the Arabian Journal of Geosciences (CAJG-3)
Source Genre: Book
 Creator(s):
Khomsi, Sami1, Editor
Bezzeghoud, Mourad1, Editor
Banerjee, Santanu1, Editor
Eshagh, Mehdi1, Editor
Benim, Ali Cemal1, Editor
Merkel, Broder1, Editor
Kallel, Amjad1, Editor
Panda, Sandeep1, Editor
Chenchouni, Haroun1, Editor
Grab, Stefan1, Editor
Barbieri, Maurizio1, Editor
Affiliations:
1 External Organizations, ou_persistent22            
Publ. Info: Cham : Springer Nature Switzerland
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 7 - 12 Identifier: ISBN: 978-3-031-43806-6
ISBN: 978-3-031-43807-3

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Title: Advances in Science, Technology and Innovation
Source Genre: Series
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Publ. Info: -
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -