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UAV-based thermal imaging and heat output estimation of a coastal geothermal resource: La Jolla beach, Baja California, Mexico

Author

Listed:
  • Carbajal-Martínez, Daniel
  • Peiffer, Loïc
  • Hinojosa-Corona, Alejandro
  • Trasviña-Castro, Armando
  • Arregui-Ojeda, Sergio M.
  • Carranza-Chávez, Francisco J.
  • Flores-Luna, Carlos
  • Méndez-Alonzo, Rodrigo
  • Inguaggiato, Claudio
  • Casallas-Moreno, Karen L.

Abstract

The exploration of unexploited geothermal resources is required to encourage the use of renewable energy. This study focuses on La Jolla beach, Ensenada, Mexico. The beach hosts a thermal anomaly with temperatures of up to 52 °C at the surface and up to 93 °C at 20 cm depth. The objectives were to: map the thermal anomaly, understand the impact of tides, quantify the thermal water discharge rate and heat output, and discuss a direct use of the energy. The mapping was performed with Unmanned Aerial Vehicles equipped with optical and thermal cameras at two different dates. Additional temperature measurements were performed with a thermocouple, while the total fluid discharge was estimated from flow measurements. A comparison between the campaigns indicated that the highest surface temperature area was more than three times larger in 2019 than in 2018 (259 m2 vs. 69 m2). Such change was due to the tidal range and associated hydrostatic pressure variations. The total thermal water discharge is 330 ± 44 L s−1, which corresponds to an advective heat output of 40.5 ± 5.2 MWt. The use of this energy in a Multi-Effect Distillation desalinization plant can contribute to cover the shortage of freshwater in Ensenada.

Suggested Citation

  • Carbajal-Martínez, Daniel & Peiffer, Loïc & Hinojosa-Corona, Alejandro & Trasviña-Castro, Armando & Arregui-Ojeda, Sergio M. & Carranza-Chávez, Francisco J. & Flores-Luna, Carlos & Méndez-Alonzo, Rodr, 2021. "UAV-based thermal imaging and heat output estimation of a coastal geothermal resource: La Jolla beach, Baja California, Mexico," Renewable Energy, Elsevier, vol. 168(C), pages 1364-1376.
    • Handle: RePEc:eee:renene:v:168:y:2021:i:c:p:1364-1376
    DOI: 10.1016/j.renene.2020.12.113
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    References listed on IDEAS

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    1. Nishar, Abdul & Richards, Steve & Breen, Dan & Robertson, John & Breen, Barbara, 2016. "Thermal infrared imaging of geothermal environments and by an unmanned aerial vehicle (UAV): A case study of the Wairakei – Tauhara geothermal field, Taupo, New Zealand," Renewable Energy, Elsevier, vol. 86(C), pages 1256-1264.
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    Cited by:

    1. Pablo Hernández-Morales & Jobst Wurl & Carlos Green-Ruiz & Diego Morata, 2021. "Hydrogeochemical Characterization as a Tool to Recognize “Masked Geothermal Waters” in Bahía Concepción, Mexico," Resources, MDPI, vol. 10(3), pages 1-23, March.

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