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Robust code for computing smooth magnetotelluric transfer functions

Robust estimates of the magnetotelluric (MT) transfer function are found using an iterative reweighted method on time series data corrected for outliers and gaps. The MT transfer function, smoothly varying in frequency, is used to represent the frequency-domain relationship between electric and magnetic time series. The smoothly varying transfer function facilitates identification and removal of electric and magnetic outliers (spikes), construction of the frequency- and time-domain weights used for obtaining robust smooth and band-averaged estimates, and separation of the time series into MT and correlated noise (CN) provided a remote site exists that is free of the correlated noise. Errors in the transfer function are calculated using jackknife estimates of the solution covariance. The input and output are all ASCII files including postscript graphics output.

Current Version:   3.0, September 1997

License Type:   Free

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Source Code Availability:   Yes

Available Binary Packages:

  • Debian Package:   No
  • RedHat RPM Package:   No
  • Other Packages:   No

Targeted Platforms:

It was developed on Sun workstation. It is platform independent since it is all written in standard Fortran 77, with one routine in C.

Software/Hardware Requirements:

Fortran compiler

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