Application of thresholding correlation techniques for earthquake precursor detection from ionospheric TEC data

Buldan Muslim*, Muhammad Nur Cahyadi, Bambang Sunardi, Sulastri

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

Based on thresholding correlation techniques, the ionospheric TEC (Total Electron Content) anomalies are grouped into earthquake precursors if they met the criteria of a TEC anomaly that exceeds the threshold value and no geomagnetic storm events in the previus 0-2 days. Testing of the thresholding correlation techniques on ionospheric diurnal variations of GIM (Global Ionospheric Map) TEC data which were limited to cases of earthquakes above 8 Richter Scale, it gave test results of 60% successful of earthquake precursor detection. By using ame method, we have examined the thresholding correlation techniques for earthquake cases between Mw 7 - 8 magnitudes during 2016. The earthquakes' latitude were spread from high until mid-latitude and equatorial, so they gave very good analysis. The test results showed that there were 11 out of 16 cases or about 69% of ionospheric TEC anomalies can be classified as earthquake precursors, which could be seen 1 day up to few weeks before earthquakes. This percentage is slightly larger than the percentage of earthquake precursors over Mw 8 detected by the same technique which was only 63%. This is due to relatively fewer geomagnetic storms during the year 2016 compared to 2000 - 2012 periods that experiencing two peaks of maximum solar cycles. From two different periods of testing, it can be concluded that the thresholding correlation techniques have a greater chance for detecting earthquake precursors during low and minimum solar activity.

Original languageEnglish
Title of host publicationInternational Symposium on Earth Hazard and Disaster Mitigation, ISEDM 2017
Subtitle of host publicationThe 7th Annual Symposium on Earthquake and Related Geohazard Research for Disaster Risk Reduction
EditorsIrwan Meilano, Takeo Ito, Phil R. Cummins, Zulfakriza
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735417038
DOIs
Publication statusPublished - 18 Jul 2018
Externally publishedYes
Event7th International Symposium on Earth Hazard and Disaster Mitigation, ISEDM 2017 - Bandung, Indonesia
Duration: 20 Nov 201721 Nov 2017

Publication series

NameAIP Conference Proceedings
Volume1987
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference7th International Symposium on Earth Hazard and Disaster Mitigation, ISEDM 2017
Country/TerritoryIndonesia
CityBandung
Period20/11/1721/11/17

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