Characterization of Seismic Source Zones in the Gulf of Aden Region

Ahmed Deif, Harith Al Kubaisy, Iman Farag Abu El-Nader, Issa El-Hussain, Yousuf Al-Shijbi, Adel M.E. Mohamed*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The Gulf of Aden is one of the active tectonic elements encompassing the Arabian Plate, representing a potential hazard for the southern parts of Oman and Yemen. This calls for an improved seismic source model for the Gulf, which is crucial for any future seismic hazard assessment regardless of the adopted approach. The developed model is delineated based on a statistical analysis of an updated earthquake catalogue, tectonic setting, and stress regime in the Gulf of Aden. Kernel density estimation (KDE) is applied to obtain an approximation of the probability density function that governs the statistical distribution of earthquakes in the area. The spatial distribution of earthquake and seismic moment kernel densities are calculated to contribute to the modeling of the seismic source. Statistical methods were then applied for estimating the maximum possible earthquake magnitude (Mmax) and the earthquake recurrence parameters [annual rate of earthquakes (λ) and β-value] for each delineated seismic zone. The seismotectonic features and the results of statistical analysis led to the delineation of four seismic sources with their essential parameters to produce a more reliable seismic hazard analysis.

Original languageEnglish
Pages (from-to)91-110
Number of pages20
JournalPure and Applied Geophysics
Issue number1
Publication statusPublished - Jan 1 2023


  • Gulf of Aden
  • kernel density
  • seismic source model
  • seismicity

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

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