1887
Volume 13 Number 6
  • ISSN: 1569-4445
  • E-ISSN: 1873-0604

Abstract

This work explores the applicability and effectiveness of electrical resistivity tomography in mapping archaeological relics in the shallow marine environment. The approach consists of a methodology based on numerical simulation models validated with comparison to field data. Numerical modelling includes the testing of different electrode arrays suitable for multi‐channel resistivity instruments (dipole–dipole, pole–dipole, and gradient). The electrodes are placed at fixed positions either floating on the sea surface or submerged at the bottom of the sea. Additional tests are made concerning the resolving capabilities of electrical resistivity tomography with various seawater depths and target characteristics (dimensions and burial depth of the targets). Although valid information, in terms of water resistivity and thickness, can be useful for constraining the inversion, it should be used judiciously to prevent erroneous information leading to misleading results. Finally, an application of the method at a field site is presented not only for verifying the theoretical results but also at the same time for proposing techniques to overcome problems that can occur due to the special environment. Numerical and field electrical resistivity tomography results indicated the utility of the method in reconstructing off‐shore cultural features, demonstrating at the same time its applicability to be integrated in wider archaeological projects.

Loading

Article metrics loading...

/content/journals/10.3997/1873-0604.2015045
2015-07-01
2020-03-29
Loading full text...

Full text loading...

References

  1. AllenD.A.2007. Electrical conductivity imaging of aquifers connected to watercourses. PhD thesis, University of Technology, Sydney, Australia.
    [Google Scholar]
  2. ApostolopoulosG.2012. Marine resistivity tomography for coastal engineering applications in Greece. Geophysics77, B97–B105.
    [Google Scholar]
  3. BaumgartnerF. and ChristensenN.B.1998. Analysis and application of a non‐conventional underwater geoelectrical method in Lake Geneva, Switzerland. Geophysical Prospecting46, 527–541.
    [Google Scholar]
  4. ColomberoC., CominaC., GianottiF. and SambuelliL.2014. Waterborne and on‐land electrical surveys to suggest the geological evolution of a glacial lake in NW Italy. Journal of Applied Geophysics105, 191–202.
    [Google Scholar]
  5. Hyoung‐SeokK., Jung‐HoK., Hee‐YoonA., Jin‐SungY., Ki‐SeogK., Chi‐KwangJ. et al. 2005. Delineation of a fault zone beneath a riverbed by an electrical resistivity survey using a floating streamer cable. Exploration Geophysics36, 50–58.
    [Google Scholar]
  6. KimJ.H. and YiM.J.2010. ‘DC2D_PRO’, Geoelectrical Modeling and Inversion. User’s Manual.Korea Institute of Geoscience and Mineral Resources, Korea.
    [Google Scholar]
  7. KimJ.H., TsourlosP., Yi.M.J. and KarmisP.2014. Inversion of ERT data with a priori information using variable weighting factors. Journal of Applied Geophysics105, 1–9.
    [Google Scholar]
  8. KimJ.‐H., YiM.‐J.., SongY., ChoS.J., ChungS.H. and KimK.‐S.2002. DC resistivity survey to image faults beneath a riverbed. In: Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP 2002), Las Vegas, USA.
    [Google Scholar]
  9. LagabrielleR.1983. The effect of water on direct current resistivity measurement from sea, river or lake floor. Geoexploration21, 165–170.
    [Google Scholar]
  10. LokeM.H. and LaneJ.W.L.Jr.2004. Inversion of data from electrical resistivity imaging surveys in water‐covered areas. Exploration Geophysics35, 266–271
    [Google Scholar]
  11. MarinatosS.1926. The excavation of Nirou Chani Crete. In: Proceedings of the Archaeological Society, pp. 142–147. (in Greek)
    [Google Scholar]
  12. OrlandoL.2013. Some considerations on electrical resistivity imaging for characterization of waterbed sediments. Journal of Applied Geophysics95, 77–89.
    [Google Scholar]
  13. PassaroS.2010. Marine electrical resistivity tomography for shipwreck detection in very shallow water: a case study from Agropoli (Salerno, southern Italy). Journal of Archaeological Science37, 1989–1998.
    [Google Scholar]
  14. PsomiadisD., TsourlosP. and AlbanakisK.2009. Electrical resistivity tomography mapping of beachrocks: Application to the island of Thassos (N. Greece). Environmental Earth Sciences59, 233–240.
    [Google Scholar]
  15. RuckerD.F., NoonanG.E. and GreenwoodW.J.W.2011. Electrical resistivity in support of geological mapping along the Panama Canal. Engineering Geology117, 121–133.
    [Google Scholar]
  16. WynnJ.C. and GroszA.E.2000. Induced‐polarization – a tool for mapping titanium‐bearing placers, hidden metallic objects, urban waste on and beneath the seafloor. Journal of Environmental and Engineering Geophysics5, 27–35.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journals/10.3997/1873-0604.2015045
Loading
/content/journals/10.3997/1873-0604.2015045
Loading

Data & Media loading...

  • Article Type: Research Article
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error