Definitions for MT Transfer Functions and Derived Quantities

MT Impedance Skew: ZSCEW

The impedance skew is usually defined as:

ZSCEW=\frac{|Z'_{xx}+Z'_{yy}|}{|Z'_{xy}-Z'_{yx}|}

where Z'xx , Z'xy , Z'yx , and Z'yy are the rotated impedance components.

References

Chave, A.D. and Jones, A.G. eds., 2012. The magnetotelluric method: Theory and practice. Cambridge University Press.
Wight, D.E., 1987. Society of Exploration Geophysicists MT/EMAP Data Interchange Standard.