Skip to main content

Volume 51 Supplement 10

Special Issue: Electromagnetic Induction in the Earth

A correction to Bahr’s phase deviation” method for tensor decomposition


For models having moderate departures from the basic distortion model (from the so called “principal superim-position” model, that is where local three-dimensional and regional two-dimensional structures are superimposed) a special tensor decomposition method (the so called phase deviation method) was suggested by Bahr (1991). As far as we know, this technique has never got a wide field application in the field. In a careful examination of the suggested solution, an error was observed in the original derivation of the formulas. In this paper Bahr’s (1991) solution is corrected. Using the new equations, more understandable and interpretable results are obtained, as it is illustrated on synthetic examples.


  • Bahr, K., Interpretation of the magnetotelluric impedance tensor: Regional induction and local telluric distortion, J. Geophys., 62, 119–127, 1988.

    Google Scholar 

  • Bahr, K., Geological noise in magnetotelluric data: A classification of distortion types, Phys. Earth Planet. Int., 66, 24–38, 1991.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to Ernő Prácser.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Prácser, E., Szarka, L. A correction to Bahr’s phase deviation” method for tensor decomposition. Earth Planet Sp 51, 1019–1022 (1999).

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: