1887
  1. Home
  2. Conferences
  3. Conference Proceedings
  4. 25th European Meeting of Environmental and Engineering Geophysics
  5. Conference paper

Abstract

Summary

Reducing the exploration depth of the TEM sounding method by measurement at earlier times necessitates decreasing size of the transmitter loop. This causes problems in measuring TEM response at both early and late times. The early time problem is associated with fundamental constraint caused predominantly by the transmitter loop inertia. As the transmitter loop decreases, its intrinsic response decreases much slower compared to that of the earth. At late times, instead of measuring the earth’s transient response one measures the receiving unit’s intrinsic response. Its initial amplitude is small, but it decreases so slowly that, eventually, its contribution to the total transient response becomes predominant. This problem is technical. It can be solved by eliminating or reducing the impact of the voltage pulse induced in the receiver loop during the current turn-off in the transmitter loop.

© EAGE Publications BV
Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201902382
2019-09-08
2024-04-18

  • From This Site

    /content/papers/10.3997/2214-4609.201902382
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Descloitres, M., Laurent, J.-P., Morra, Ch., Clément, R., Oxarango, L. and Gourc, J.-P.
    [2008] Monitoring Resistivity in Non-Hazardous Waste Landfill Using Time Domain Electromagnetism (Drôme, France). EAGE 14th European Meeting of Environmental and Engineering Geophysics, Krakow, Poland.
     [Google Scholar]
  2. Geidetzka, A.
    [2002] Erste Erfahrungen mit der Nano TEM-Apparatur. Diplomarbeit, Institut für Geophysik und Meteorologie, Köln.
     [Google Scholar]
  3. Kozhevnikov, N.O.
    [2009] Applying the transmission line theory to study ungrounded horizontal loop self-transients. Russian Geology and Geophysics, 50, 222–233.
     [Google Scholar]
  4. [2016] Current turn-off in an ungrounded horizontal loop: experiment and theory. Russian Geology and Geophysics, 57, 498–505.
     [Google Scholar]
  5. Kozhevnikov, N.O. and Antonov, E.Y.
    [2012] The TEM Method in Studies of Near-surface Magnetically Viscous Rocks. Near Surface Geoscience 2012, Paris, France.
     [Google Scholar]
  6. MejuMax A.
    [1995] Simple effective resistivity-depth transformations for infield and real-time data processing. Computers & Geosciences, 21(8), 985–992.
     [Google Scholar]
  7. Sharlov, M.V., Buddo, I.V., Misyurkeeva, N.V., Shelokhov, I.A. and Agafonov, Yu.A.
    [2017a] Transient Electromagnetic Surveys for High-Resolution Near-Surface Exploration: Basics and Case Studies. First Break, 35 (September), 63–71.
     [Google Scholar]
  8. Sharlov, M. and Kozhevnikov, N.
    [2018] Intrinsic response of a TEM measuring unit as cause of slowly decaying anomalous transients. 24th EM Induction Workshop, Helsingør, Denmark.
     [Google Scholar]
  9. Sharlov, M.V., Kozhevnikov, N.O. and Sharlov, R.V.
    [2017b] Lake Baikal - A Unique Site for Testing and Calibration of Near-surface TEM Systems. Near Surface Geoscience 2017, Malmö, Sweden.
     [Google Scholar]
  10. Sharlov, M.V., KozhevnikovN.O. and ShelokhovI.A.
    [2018] Manifestation of anomalously slow TEM transients in small central-loop array data (in Russian). Engineering and Mining Geophysics 2018, Almaty, Kazakhstan.
     [Google Scholar]
  11. Spies, B.R. and Frischknecht, F.C.
    [1991] Electromagnetic Sounding. In Nabighian, M. N. and J. D.Corbett (Eds) Electromagnetic methods in applied geophysics, Volume 2, Applications. Society of Exploration Geophysicists, Tulsa, Oklahoma, 285–425.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201902382
Loading
Early-Time and Late-Time Limitations on the Performance of Near-Surface TEM Measuring Systems
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201902382
/content/papers/10.3997/2214-4609.201902382
/content/papers/10.3997/2214-4609.201902382
Loading

Data & Media loading...

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