1887
Volume 11 Number 4
  • ISSN: 1569-4445
  • E-ISSN: 1873-0604

Abstract

ABSTRACT

The Eastern Mediterranean has been used as a passageway for human migration from Africa to the Middle East, the Balkans and Europe. The Azraq basin in the eastern desert of Jordan has been a major spot for human settlements since the middle Pleistocene. The former lake in the basin centre has developed to a hyper‐saline alluvial mudflat, the Qa’ Al Azraq. In the mudflat thick sequences of alluvial sediments are deposited. Such sediment successions are promising archives used for reconstructing a paleoclimate.

In order to identify geological structures and to derive suitable borehole locations in the area for a paleoclimatical reconstruction, the Transient Electromagnetic (TEM) and the Electrical Resistivity Tomography (ERT) methods were utilized. Two transects were investigated from the edge of the basin to the basin centre, crossing three geological formations. The data sets of both methods are interpreted by 1D and 2D inversion algorithms and appraised by inversion statistics. Previously uncertain geological boundaries are determined from geoelectrical models along both transects. Furthermore, a transition zone from fresh to saline groundwater is clearly detected.

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2024-04-26
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References

  1. AbedA.M., YasinS., SadaqaR. and Al‐HawariZ.2008. The paleoclimate of the eastern desert of Jordan during marine isotope stage 9. Quaternary Research69, 458–468.
    [Google Scholar]
  2. ABEM
    ABEM . 2010. Terrameter SAS 4000 / SAS 1000 Instruction Manual. ABEM Instrument AB, printed matter no. 93109 Edition. URL http://www.abem.se/software.php
    [Google Scholar]
  3. AhmadK.I.2010. Organic chemistry of Al‐Azraq basin, Jordan, an interpretation of paleoenvironment and paleoclimate using bulk organic matter . PhD thesis, University of Missouri‐Kansas City.
    [Google Scholar]
  4. Ala’liJ.1993. Exploration for Bentonite and other Minerals in Azraq Depression. Technical Report, Natural Resources Authority, Geology Directorate, Economic Geology Division, Amman.
    [Google Scholar]
  5. ByrdB.F.1988. Late Pleistocene settlement diversity in the Azraq basin. Paléorient14(2), 257–264.
    [Google Scholar]
  6. ConstableS.C., ParkerR.L. and ConstableC.G.1987. Occam’s inversion: A practical algorithm for generating smooth models from EM sounding data. Geophysics52, 289–300.
    [Google Scholar]
  7. CopelandL.1988. Environment, Chronology and Lower‐Middle Paleolithic Occupations of the Azraq Basin, Jordan. Paléorient14(2), 66–75.
    [Google Scholar]
  8. DaviesC.P.2005. Quaternary paleoenvironments and potential for human exploitation of the Jordan plateau desert interior. Geoarchaeology20(4), 379–400.
    [Google Scholar]
  9. El‐KaysiK. and TalatT.1996. Geoelectrical survey in the Azraq mudflat area. Technical Report, Natural Resources Authority, Geophysics and Technical Service Department, Geophysics Division, Amman.
    [Google Scholar]
  10. El‐NaqaA.2010. Final Report: Study of salt water intrusion in the upper aquifer in Azraq basin. IUCN‐International Union for Conservation of Nature.
    [Google Scholar]
  11. El‐WaheidiM., MerlantiF. and PavanM.1992. Geoelectrical resistivity survey of the central part of Azraq basin (Jordan) for identifying salt‐water/freshwater interface. Journal of Applied Geophysics29, 125–133.
    [Google Scholar]
  12. FittermanD. and AndersonW.1987. Effect of Transmitter Turn‐Off Time on Transient Soundings. Geoexploration24, 131–146.
    [Google Scholar]
  13. GerardA. N., PriceN.S. and CopelandL.1975. A survey of prehistoric sited in the Azraq basin, eastern Jordan. Paléorient3, 109–126.
    [Google Scholar]
  14. GüntherT.2004. Inversion Methods and Resolution Analysis for the 2D/3D Reconstruction of Resistivity Structures from DC Measurements . PhD thesis, Technische Universität Bergakademie Freiberg.
    [Google Scholar]
  15. HansenP.C. and O’LearyD.P.1993. The use of the l‐curve in the regularization of discrete ill‐posed problems. SIAM Journal of Scientific Computing14, 1487–1503.
    [Google Scholar]
  16. HansteinT.1992. Iterative und parametrisierte Dekonvolution für LOTEM Daten. In: Protokoll über das 14. Kolloquium Elektromagnetische Tiefenforschung , pp. 163–172. Deutsche Geophysikalische Gesellschaft.
    [Google Scholar]
  17. HelwigS.L., LangeJ. and HansteinT.2003. Kombination dekonvolvierter Messkurven zu einem langen Transienten. In: Protokoll über die 63. Jahrestagung der Deutschen Geophysikalischen Gesellschaft . Deutsche Geophysikalische Gesellschaft.
    [Google Scholar]
  18. IbrahimK.1996. The Regional Geologoy of Al Azraq Area. Hashemite Kingdom of Jordan, Geological Mapping Division, Natural Resources Authority, Bulletin36.
    [Google Scholar]
  19. LangeJ.2003. Joint Inversion von Central‐Loop‐TEM und Long‐Offset‐TEM Transienten am Beispiel von Messdaten aus Israel 2002 . Master’s thesis, Universität zu Köln, Institut für Geophysik und Meteorologie.
    [Google Scholar]
  20. MenkeW.1984. Geophysical Data Analysis: Discrete Inverse Theory . Academic Press.
    [Google Scholar]
  21. SchollC.2005. The influence of multidimensional structures on the interpretation of LOTEM data with one‐dimensional models and the application to data from Israel . PhD thesis, Universität zu Köln, Institut für Geophysik und Meteorologie.
    [Google Scholar]
  22. SFB‐806
    SFB‐806 . 2012. OUR WAY TO EUROPE – Culture‐Environment Interaction and Human Mobility in the Late Quaternary. Online. URL http://www.sfb806.uni‐koeln.de/
    [Google Scholar]
  23. SpiesB.R. and FrischknechtF.C.1991. Electromagnetic sounding. Electromagnetic Methods in Applied Geophysics2 (Part A), 285–426.
    [Google Scholar]
  24. WardS.H. and HohmannG.W.1988. Electromagnetic theory for geophysical applications. Electromagnetic Methods in Applied Geophysics1, 131–311.
    [Google Scholar]
  25. ZongeM.2002. GDP‐32 II Multifunction Receiver Operation Manual. Zonge Engineering and Research Organization. URL http://www.zonge.com/RxManuals.html
    [Google Scholar]
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