干旱区生态环境知识资源中心(Arid): Comparison among the natural radioactivity levels, the radiogenic heat production, and the land surface temperature in arid environments: A case study of the El Gilf El Kiber area, Egypt

Arid

DOI	10.1016/j.jafrearsci.2020.103959
	Comparison among the natural radioactivity levels, the radiogenic heat production, and the land surface temperature in arid environments: A case study of the El Gilf El Kiber area, Egypt
	Farag, Tamer; Soliman, Nehal; El Shayat, Atef; Mizunaga, Hideki
通讯作者	Farag, T (corresponding author), Kyushu Univ, Grad Sch Engn, Earth Resources Engn Dept, Geophys Explorat Lab,Nishi Ward, Room 417,Floor 4,West Bldg 2,744 Motooka, Fukuoka 8190385, Japan.
来源期刊	JOURNAL OF AFRICAN EARTH SCIENCES
ISSN	1464-343X
EISSN	1879-1956
出版年	2020
卷号	172
英文摘要	The El Gilf El Kiber area is one of the most promising areas for urban growth and reclamation projects in the southwest of Egypt. In the study area, the lithological units vary in age from Precambrian (mainly granite) to Quaternary (mainly sand sediments). The analysis of airborne magnetic and gamma-my spectrometry data was incorporated into that of the remote sensing data (Landsat-8). The integrated analysis was used to detect the Ethological distributions and to delineate the subsurface basement rocks that control the radioactivity in the study area. It was also used to determine the relationship between radiogenic heat production (RHP) and land surface temperature (LSI') that was retrieved from the Landsat-8 thermal infrared sensor (TIRS) data. The output of the principal component analysis (PCA) of Landsat-8 Operational Land Imager (OLI) data is a false-color map (PC1, PC2, and PC3 as red, green, and blue, respectively) displaying the various lithological units in the study area. The LST map, calculated from Landsat-8 TIRS data, shows that the surface temperatures range from approximately 41 to 53 degrees C. The highest concentrations of eU, eTh, and K in the area were 25 ppm, 121 ppm, and 7.8%, respectively. The RHP values ranged from 1.1 mu W/m(3) to 15.1 mu W/m(3). These relatively high anomalies are associated with basement outcrops and the sedimentary rocks overlying shallow basement rocks. The total horizontal derivative (THD) of the magnetic data delineates the horizontal extension of the basement rocks. The Curie point depth (CPD), estimated from magnetic data, ranges from 35.5 km to 41.0 km. The results also exhibited geothermal gradients ranging from 16.10-degrees C/km to 14.14 degrees C/km, and heat flow ranges from 35.4 mW/m(2) to 40.8 mW/m(2). It was evident after comparing that the BHP and 1ST maps exhibited the same features as the gamma-ray spectrometric maps. Moreover, the areas around the basement rocks exhibited higher radioactivity, RHP, and temperature than the basement rocks themselves.
英文关键词	Airborne geophysics Land surface temperature Landsat 8 Radiogenic heat production
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000590387100008
WOS关键词	CURIE-POINT DEPTHS ; THERMAL REGIME ; FLOW ; EVOLUTION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369213
作者单位	[Farag, Tamer; Mizunaga, Hideki] Kyushu Univ, Grad Sch Engn, Explorat Geophys Lab, Fukuoka, Japan; [Farag, Tamer; El Shayat, Atef] Nucl Mat Author, Explorat Sect, Airborne Geophys Dep, New Cairo, Egypt; [Soliman, Nehal] Natl Author Remote Sensing & Space Sci, Geol Applicat Dep, Cairo, Egypt
推荐引用方式 GB/T 7714	Farag, Tamer,Soliman, Nehal,El Shayat, Atef,et al. Comparison among the natural radioactivity levels, the radiogenic heat production, and the land surface temperature in arid environments: A case study of the El Gilf El Kiber area, Egypt[J],2020,172.
APA	Farag, Tamer,Soliman, Nehal,El Shayat, Atef,&Mizunaga, Hideki.(2020).Comparison among the natural radioactivity levels, the radiogenic heat production, and the land surface temperature in arid environments: A case study of the El Gilf El Kiber area, Egypt.JOURNAL OF AFRICAN EARTH SCIENCES,172.
MLA	Farag, Tamer,et al."Comparison among the natural radioactivity levels, the radiogenic heat production, and the land surface temperature in arid environments: A case study of the El Gilf El Kiber area, Egypt".JOURNAL OF AFRICAN EARTH SCIENCES 172(2020).