干旱区生态环境知识资源中心(Arid): SAR Remote Sensing of Buried Faults: Implications for Groundwater Exploration in the Western Desert of Egypt

Arid

DOI	10.1007/s11220-011-0066-1
	SAR Remote Sensing of Buried Faults: Implications for Groundwater Exploration in the Western Desert of Egypt
	Gaber, Ahmed; Koch, Magaly; Griesh, M. Helmi; Sato, Motoyuki
通讯作者	Gaber, A
来源期刊	SENSING AND IMAGING
ISSN	1557-2064
EISSN	1557-2072
出版年	2011
卷号	12 期号:3-4 页码:133-151
英文摘要	The hydrological setting of a desert plain area located in Egypt, west of Aswan city, is still not well understood, and thus, its groundwater potential remains largely unknown. Images from the ALOS/PALSAR L-band sensor have been used to detect and delineate the subsurface structures in this area. Linear, elliptical and circular polarization transformations were applied to the ALOS/PALSAR full polarimetric data by changing the orientation angle (psi degrees) and elliptical angle (X degrees). The circular polarization (psi = 0 degrees and X = 45 degrees) proved to be the best transformation for revealing buried faults in various strike directions, which have not been reported in the last version of the official geologic map of this area. Such derived circular polarization images were further enhanced by applying the Optimal Polarization Contrast Enhancement method. The moisture content (theta(S)) of the study sites was generally low, with an average of roughly 0.01%. The average Root Mean Square Height (h(RMS)) of the surface roughness was also low with 0.01 cm across all sites. The relative dielectric constant (epsilon(r)) of the sand in the study area produced a very low value of 3.04. The effects of theta(S), epsilon(r) and hRMS on the radar backscattered signals turned out to be very low, thus providing, optimal conditions for L-band to penetrate relatively deeply. Moreover, 21 GPR profiles were acquired using 270 MHz shielded antennas to validate the radar remote sensing results. These GPR profiles reveal obvious offsets in the subsurface stratigraphy suggesting that such highly fractured zones are possibly favorable zones for groundwater accumulation.
英文关键词	Buried faults ALOS/PALSAR L-band GPR Groundwater potential Western Desert ~ Egypt
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000218299400004
WOS关键词	RADAR
WOS类目	Instruments & Instrumentation
WOS研究方向	Instruments & Instrumentation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329737
作者单位	[Gaber, Ahmed; Sato, Motoyuki] Tohoku Univ, Grad Sch Environm Studies, Sendai, Miyagi, Japan; [Koch, Magaly] Boston Univ, Ctr Remote Sensing, Boston, MA 02215 USA; [Griesh, M. Helmi] Suez Canal Univ, Dept Geol, Ismailia, Egypt
推荐引用方式 GB/T 7714	Gaber, Ahmed,Koch, Magaly,Griesh, M. Helmi,et al. SAR Remote Sensing of Buried Faults: Implications for Groundwater Exploration in the Western Desert of Egypt[J],2011,12(3-4):133-151.
APA	Gaber, Ahmed,Koch, Magaly,Griesh, M. Helmi,&Sato, Motoyuki.(2011).SAR Remote Sensing of Buried Faults: Implications for Groundwater Exploration in the Western Desert of Egypt.SENSING AND IMAGING,12(3-4),133-151.
MLA	Gaber, Ahmed,et al."SAR Remote Sensing of Buried Faults: Implications for Groundwater Exploration in the Western Desert of Egypt".SENSING AND IMAGING 12.3-4(2011):133-151.