# Translations:Dictionary:Seismic trace/5/en

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The recorded seismic trace is considered the real part of the complex trace. By phase shifting the recorded trace by 90 degrees, we can obtain the imaginary part of the complex trace. The complex seismic trace is a complex function whose real and imaginary part are the previously mentioned.^{[1]} From the complex trace, one can now define seismic attributes such as the complex amplitude, phase, instantaneous phase and instantaneous frequency.

- ↑ Barnes, A.E. (2007). "A tutorial on complex seismic trace analysis".
*Geophysics***72**: W33-W43. doi:10.1190/1.2785048.