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May 12, 2026Open Access

Analysis of ionospheric response to Earthquake using GPS data: a case study of Chignik, North America and Southern-Sandwich, South America Earthquakes

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Authors

SASamuel AkpanENEkong U. NathanielJTJewel E. Thomas

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Overview

Randomized trial analyzes ionospheric anomalies linked to earthquakes in North and South America, suggesting TEC monitoring for forecasting.

Key Points

  • This analysis aims to determine how ionospheric behavior responds to significant earthquake events using GPS-derived TEC data.
  • Data collected from GPS stations in seismogenic zones 20 days before and 5 days after earthquakes.
  • Statistical analysis using moving median technique to analyze TEC data during the earthquakes.
  • Solar and geomagnetic indices monitored to assess related activities during the study period.
  • TEC data exhibited both negative and positive anomalies around earthquake events, indicating possible seismogenic effects.
  • Relative stillness was observed in geomagnetic and solar indices during 88% of anomalous days, supporting the connection to seismic activities.
  • Findings suggest that TEC anomalies could aid in short-term earthquake forecasting.

Cite This Study

Akpan et al. (2022) studied this question.

synapsesocial.com/papers/6a02c380ce8c8c81e9640c97https://doi.org/10.83080/rejost.vol2no1.17
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