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Two-Dimensional Gravity Inversion of Basement Relief for Geothermal Energy Potentials at the Harrat Rahat Volcanic Field, Saudi Arabia, Using Particle Swarm Optimization

Author

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  • Faisal Alqahtani

    (Geohazards Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
    Department of Petroleum Geology and Sedimentology, Faculty of Earth Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia)

  • Ema Michael Abraham

    (Department of Geology/Geophysics, Alex Ekwueme Federal University, Ndufu-Alike Ikwo, P.M.B. 1010, Abakaliki 482131, Ebonyi, Nigeria)

  • Essam Aboud

    (Geohazards Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia)

  • Murad Rajab

    (Geohazards Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
    Department of Petroleum Geology and Sedimentology, Faculty of Earth Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia)

Abstract

We invert gravity and magnetic anomalies for basement relief at the Harrat Rahat Volcanic Field (HRVF) for the purpose of evaluating its geothermal energy prospects. HRVF is dominated by basaltic scoria cones and other volcanic rocks overlying the Proterozoic basement. The area considered for this study is located within the northern HRVF and consists mainly of alkali basalts with lesser amounts of benmoreite, mugearite, hawaiite, and trachyte. Our approach adopts a global optimization technique using Particle Swarm Optimization with automated parameter selection, and a two-dimensional gravity-magnetic (GM) forward modeling procedure. The results of the PSO-based approach indicate a depth to the basement at 0.10–624 m, with greater depths within the central region of a solitary anomalous density body in the HRVF. The obtained basement geometry is corroborated by the depth estimates obtained from other potential field inversion methods. The regions with higher prospects are mapped for a targeted future geothermal energy exploration at the HRVF, based on our inversion results.

Suggested Citation

  • Faisal Alqahtani & Ema Michael Abraham & Essam Aboud & Murad Rajab, 2022. "Two-Dimensional Gravity Inversion of Basement Relief for Geothermal Energy Potentials at the Harrat Rahat Volcanic Field, Saudi Arabia, Using Particle Swarm Optimization," Energies, MDPI, vol. 15(8), pages 1-30, April.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:8:p:2887-:d:794216
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    References listed on IDEAS

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    1. Hussein, Mohamed T. & Lashin, Aref & Al Bassam, Abdulaziz & Al Arifi, Nassir & Al Zahrani, Ibrahim, 2013. "Geothermal power potential at the western coastal part of Saudi Arabia," Renewable and Sustainable Energy Reviews, Elsevier, vol. 26(C), pages 668-684.
    2. Artan Kaso, 2018. "Computation of the normalized cross-correlation by fast Fourier transform," PLOS ONE, Public Library of Science, vol. 13(9), pages 1-16, September.
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    Cited by:

    1. Faisal Alqahtani & Essam Aboud & Muhsan Ehsan & Zohaib Naseer & Murad Abdulfarraj & Mohamed F. Abdelwahed & Nabil El-Masry, 2023. "Geothermal Exploration Using Remote Sensing, Surface Temperature, and Geophysical Data in Lunayyir Volcanic Field, Saudi Arabia," Sustainability, MDPI, vol. 15(9), pages 1-21, May.

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