Assessing the potential of groundwater resources west of Aswan, Egypt, using ALOS/PALSAR polarimetric information

Ahmed Gaber, Magaly Koch, Motoyuki Sato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The hydrological setting of the area west of Aswan city. Egypt that is mainly covered by dry sand is still not well understood, and its groundwater potential remains largely unknown. The ALOS/PALSAR L-band sensor has been used to detect and delineate the subsurface structures along the study area. The circular polarization transformation has been applied on the ALOS/PALSAR full polanmetric data by changing the orientation angle (ψ=0°) and elliptical angle (χ = 45°) and revealed many buried faults in various strike directions, which were not reported on the last version of the official geologic map. Such derived circular polarization images were further enhanced by applying the Optimal Polarization Contrast Enhancement (O.P.C.E) method. Thus the proper stocks vectors of the transmitter and receiver have been calculated from the PALSAR full polanmetric data and plotted on the Poincare sphere to determine the best polarization states for imaging these buried faults. The moisture content of the study sites was generally low, with an average of roughly 0.3% during the field campaign. Therefore, the average Root Mean Square Height (hRMs) of the surface roughness was 0.01 cm across all sites. On the other hand, 21 conventional 2D-GPR profiles have been acquired using 270 MHz antenna to validate the radar remote sensing results. These GPR profiles reveal obvious offset in the subsurface stratigraphy.

Original languageEnglish
Title of host publication2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2761-2764
Number of pages4
ISBN (Print)9781457710056
DOIs
Publication statusPublished - 2011 Jan 1
Event2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 - Vancouver, BC, Canada
Duration: 2011 Jul 242011 Jul 29

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)

Other

Other2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
CountryCanada
CityVancouver, BC
Period11/7/2411/7/29

Keywords

  • ALOS/PALSAR L-band
  • Buried faults
  • Egypt
  • GPR
  • groundwater potential
  • western desert

ASJC Scopus subject areas

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

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    Gaber, A., Koch, M., & Sato, M. (2011). Assessing the potential of groundwater resources west of Aswan, Egypt, using ALOS/PALSAR polarimetric information. In 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 - Proceedings (pp. 2761-2764). [6049786] (International Geoscience and Remote Sensing Symposium (IGARSS)). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IGARSS.2011.6049786