資源探査に関する研究の動向と大規模データプロセッシング

[3K61201-03-02] リモートセンシングと地温検層データの統合によるエジプト・スエズ湾の地熱資源解析

○エルホリンユ モハメド^1,2、マスード アラア²、久保 大樹¹、小池 克明¹ (1. 京都大学 、2. タンタ大学)

キーワード：BHT、熱流量、温泉、LST、地温勾配

Egyptian demands for electricity are developing quickly and over time, alternative energy sources are getting progressively pressing. Accordingly, the advanced scheme for developing generation capacity using sustainable and renewable resources, for example, solar energy, wind energy, geothermal energy and investment in nuclear power plants are implemented. The Gulf of Suez (GOS) region is one of the most prime geothermal regions in Egypt due to the presence of hot springs. The temperature of the surface geothermal water originating from these springs isn't so high, but it can still be accessed for economic use on a small scale. The BHT records of 230 deep oil wells were utilized to assess the geothermal resources along the Gulf of Suez. Corrections were applied to the BHT data to get the true formation temperatures records, which can give conducive highlights on the subsurface thermal behavior. The results indicated that the study area has a geothermal gradient ranging from 0.18 to 9.302 ℃/100 m, and a heat flow ranging from 48.4 to 173.4 m.W.K^-1. Additionally, the thermal conductivity was found to be in the range of 1.6 - 3.2 W.m^-1.k^-1. In order to select the most promising areas for geothermal potentiality and delineate the hydrothermal mineralization zones associated with the hotspot, multi-spectral Landsat-8 imagery, Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), along with the digital elevation model (DEM) at 5m resolution of the Advanced Land Observation Satellite (ALOS) world 3D (AW3D), were evaluated and processed in a GIS model. It is worth mentioning, the yielded geothermal favourability map has been validated according to the thermal water wells and hot springs which considered as a criterion for comparison. The results revealed the effectiveness and the great potential in exploration, controlling and management of geothermal energy resources along the Gulf of Suez area.