1887
  1. Home
  2. A-Z Publications
  3. Near Surface Geophysics
  4. Volume 18, Issue 2
  5. Article
Volume 18 Number 2
  • ISSN: 1569-4445
  • E-ISSN: 1873-0604

Abstract

ABSTRACT

In this research, we have studied the capabilities and limitations of the transient electromagnetic sounding applied to investigate the structure and composition of the moraine deposits covering a crystalline basement. It has been experimentally demonstrated that using the ungrounded antennas one can not only determine the electrical resistivity of different layers in the alluvium deposits and map the surface topography of the crystalline basement down to a depth of 70–100 m, but can also minimize the costs and the damage done to the environment. Additionally, transient electromagnetics helps to reveal the layers within the moraine strata that often have different resistivities and depths. The use of single antennas of size 12 m × 12 m–25 m × 25 m for field excitation and registration of transient responses allows for maximum localization of the targets and provides a high horizontal resolution in strongly heterogeneous media. The limitations of the method due to the induced polarization effect have also been investigated. Overall, despite some limitations, the transient electromagnetic method appears to be effective in the mapping, assessment and analysis of hazards in landslide‐prone areas, prior to geotechnical soundings in wells.

© 2020 European Association of Geoscientists & Engineers © 2019 European Association of Geoscientists & Engineers
Loading

Article metrics loading...

/content/journals/10.1002/nsg.12070
2019-10-24
2024-10-15

  • From This Site

    /content/journals/10.1002/nsg.12070
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. AEMR . 2018. TEM‐FAST, TEM‐RESEARCHER, TEM‐3D‐WIZARD, Manuals. AEMR.
  2. BarsukovP.O. and FainbergE.B.2016. On the geoelectric structure of the Sphinx Area in Egypt. Near Surface Geophysics14, 39–45.
     [Google Scholar]
  3. BarsukovP.O. and FainbergE.B.2018. On the locality of transient electromagnetic soundings with a single‐loop configuration. Izvestiya Physics of the Solid Earth54, 349–358.
     [Google Scholar]
  4. BarsukovP.O., FainbergE.B. and KhabenskyE.O.2015. Shallow investigations by TEM‐FAST technique: methodology and examples. In: Electromagnetic Sounding of the Earth's Interior. Theory, Modelling, Practice (ed. V.V.Spichak), pp. 47–78. Elsevier, Amsterdam.
     [Google Scholar]
  5. DahlinT., LofrothH., SchalinD. and SuerP.2012. Mapping of quick clay using geoelctrical imaging and CPTU‐resistivity. Near Surface Geophysics11, 659–670.
     [Google Scholar]
  6. DonohueS., LongM., O'ConnorP., Eide‐HelleT., PffaffhuberA.A. and RomoenM.2012. Multi‐method geophysical mapping of quick clay. Near Surface Geophysics10, 207–219.
     [Google Scholar]
  7. DruskinV. and KnizhnermanL.1988. A spectral semi‐discrete method for the numerical solution of 3D non‐stationary electrical prospecting problem. Physics of the Solid Earth24, 641–648.
     [Google Scholar]
  8. GillP.E., MurrayW. and WrightM.H.1981. Practical Optimization. Academic Press, p. 419.
     [Google Scholar]
  9. GubatenkoV.P. and TikshaevV.V.1979. On changes in the sign of electromotive force of induction in the transient electromagnetic field method. Izvestiya, Physics of the Solid Earth3, 95–99.
     [Google Scholar]
  10. KamenetskyF.M., StettlerE.H. and TrigubovichG.M.2010. Transient Geo‐Electromagnetics. GEOS, Munich, pp. 304.
     [Google Scholar]
  11. KaufmanA.A. and KellerG.V.1983. Frequency and Transient Soundings. Elsevier, Amsterdam, p. 685.
     [Google Scholar]
  12. MalehmirA., BastaniM., KrawczykC., GurkM., NazliI., PolomU.et al. 2013. Geophysical assessment and geotechnical investigation of quick‐clay landslides – a Swedish case study. Near Surface Geophysics11, 341–350.
     [Google Scholar]
  13. ObukhovG.1968. About some properties of non‐stationary electromagnetic fields in the earth and their use in electrical prospecting. Physics of the Earth9, 62–70 (in Russian).
     [Google Scholar]
  14. SauvinG., LecomteI., BazinS., HansenL., VannesteM. and L'HeureuxJ.‐S.2014. On the integrated use of geophysics for quick‐clay mapping: the Hvittingfoss case study, Norway. Journal of Applied Geophysics106, 1–13.
     [Google Scholar]
  15. SidorovV.A. and TikshaevV.V.1969. Geo‐electromagnetics by Transient Sounding in Near Zone, Saratov. NVNIIGG, p. 38.
     [Google Scholar]
  16. SolbergI.L., RonningJ.S., DalseggE., HansenL., RokoengenK. and SandvenR.2008. Resistivity measurements as a tool for outlining quick‐clay extent and valley fill stratigraphy: a feasibility study from Buvika, central Norway. Canadian Geotechnical Journal45, 210–225.
     [Google Scholar]
  17. WeideltP.1982. Response characteristic of coincident loop transient electromagnetic system. Geophysics47, 1325–1330.
     [Google Scholar]
/content/journals/10.1002/nsg.12070
Loading
Mapping bedrock topography and moraine deposits by transient electromagnetic sounding: Oslo graben, Norway
Near Surface Geophysics 18, 123 (2020); https://doi.org/10.1002/nsg.12070
/content/journals/10.1002/nsg.12070
/content/journals/10.1002/nsg.12070
Loading

Data & Media loading...

  • Article Type: Research Article
Keyword(s): Glaciomarine deposits; IP; Landslides; Quick clay; TEM

Most Cited This Month Most Cited RSS feed

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