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Application of spectral analysis technique on ground magnetic data to calculate the Curie depth point of the eastern shore of the Gulf of Suez, Egypt

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Abstract

The bottom of the magnetized crust determined from the spectral analysis of magnetic anomaly is interpreted as a level of the Curie point isotherm. A spectral analysis technique was used to estimate the depth of the magnetic anomalies sources (Curie point depth analysis) of the eastern shore of the Gulf of Suez, Egypt. The depth to the tops and centers of the magnetic anomalies are calculated by azimuthally averaged power spectrum method for the whole area. The results obtained suggests from this study showed that the average depth to the top of the crustal block ranges between 1.15 and 1.9 km, whereas the average depth to the center of the deepest crustal block ranges between 9.1 and 12.7 km. Curie point depths in the study area range between 14.5 km in the northwestern part of the study area and 26 km in the southeastern part of the study area. The results imply a high geothermal gradient (34.7 °C/km) and corresponding high heat flow value (72.87 mW/m2) in the northwestern part of the study area. The southeastern part of the study area displays a low geothermal gradient (24.26 °C/km) and low heat flow value (50.9 mW/m2). These results are consistent with the existence of the possible promising geothermal reservoir in the eastern shore of the Gulf of Suez especially at Hammam Faraun area.

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Acknowledgments

The authors are indebted to all staff members in Geology Departments, Faculty of Science at Damietta, Damietta University, for their beneficial comments on my manuscript, continuous help, and support during the progress of this research.

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Authors and Affiliations

  1. Geology Department, Faulty of Science, Damietta University, Damietta, Egypt

    El Sayed Ibrahim Selim

  2. Faculty of Earth Sciences, King Abdulaziz University, Jeddah, Saudi Arabia

    Essam Aboud

  3. National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt

    Essam Aboud

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  1. El Sayed Ibrahim Selim
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Correspondence to El Sayed Ibrahim Selim.

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Selim, E.I., Aboud, E. Application of spectral analysis technique on ground magnetic data to calculate the Curie depth point of the eastern shore of the Gulf of Suez, Egypt. Arab J Geosci 7, 1749–1762 (2014). https://doi.org/10.1007/s12517-013-0868-7

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